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2017年5-8月材料学院SCIE论文收录

2017年5-8月交大材料学院论文被SCIE收录共计217篇 (以入库时间为准,数据库更新时间:2017-9-21)
(通讯作者署名上海交大材料学院的,文章序号前以星号*标识)

*1. Effect of Q-Al5Cu2Mg8Si6 phase on mechanical properties of Al-Si-Cu-Mg alloy at elevated temperature
作者:Zuo L. J., Ye B., Feng J., Kong X. Y., Jiang H. Y., Ding W. J.
来源:Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, volume: 693, issue:  pages:26-32. Published: 2017

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Tags: 材料 SCIE收录

分类:信息导航 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 57
      美国斯坦福大学研究人员28日报告说,受壁虎吸附墙壁原理启发,他们研制出一种能够抓住太空漂浮物体的机械抓手,有望用来清理回收威胁日益增大的太空垃圾。

    这项成果当天发表在新一期美国《科学·机器人学》杂志上。论文第一作者、斯坦福大学机械学院姜皓博士告诉新华社记者,近年来,太空垃圾数量迅速增长,导致现役卫星承受着越来越多的威胁,抓取并回收太空垃圾成为重要的研究方向。他们经5年研究研制出“壁虎抓手”,从原理上说可以抓取很多种形状、大小、材料的太空垃圾,如太阳能电池板、飞船舱体、燃料箱外壳、火箭外壳等。

    姜皓解释说,壁虎吸附墙壁是靠它们脚上细微毛发与墙壁接触的分子间吸附力,他们研发的仿壁虎材料运用了相同原理,核心在于有方向的吸附力,也就是说这种材料在平时不粘,而当有切向力的时候就会牢牢吸住物体表面,整个过程几乎不需要进行按压。把两块这样的材料组合成一个抓手,使用时看起来“只是轻轻接触物体表面就能粘上去”。

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分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 96

三维显微术实现完整取样活检

      一项新研究利用改进的显微镜,实现了对完整大型临床组织的快速成像。运用这种新方法,临床病理学家能在数分钟内获得整个样本的三维可视化图像,从而提高诊断准确性。该技术可用于手术后的肿瘤组织等。相关成果近日在线发表于《自然—生物医学工程》。

    在经手术取出组织样本后,病理学家首先会通过化学方法固定保留其结构,然后将组织切成薄片,放置在载玻片上,随后用染料染色。由于这一过程十分费时费力,因此一个样本中实际上只有几个组织切片得到了显微镜分析,为诊断提供信息。这一限制可能会显著影响临床医生正确做出决定的能力,导致病理分型错误。

    美国西雅图华盛顿大学的Jonathan Liu及同事优化了扫描样本切片的荧光显微镜,使手术样本可在数分钟内成像,且无需样本处理。作者表示,显微镜可快速识别肿瘤切缘,通过避免标准组织病理学方法中产生的伪影,提供更准确的临床组织样本评估,从而改善对患者诊断。(来源:科学网 晋楠)

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分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 100

正渗透膜技术应用研究取得进展

      近日,中国科学院重庆绿色智能技术研究院膜技术与应用工程中心在正渗透膜技术应用于垃圾渗滤液处理方面取得研究进展。相关研究成果分别以A novel forward osmosis system in landfill leachate treatment forremoving polycyclic aromatic hydrocarbons and for direct fertigation、Toxicological characterization of a novel wastewater treatmentprocess using EDTA-Na2Zn as draw solution (DS) for the efficienttreatment of MBR-treated landfill leachate 为题发表于国际学术期刊Chemosphere。

    垃圾渗滤液中含有高浓度的重金属、氨氮、COD、BOD,危害大且处理难。现有的处理工艺例如UF、NF、MBR、RO等回收率低、膜污染严重、成本高、运行能耗大。该研究选取无需外界驱动力的正渗透膜技术处理垃圾渗滤液,研究了碳酸氢铵和EDTA钠盐两种汲取液的回收效率,分析了不同汲取液浓度、流速、膜朝向等条件下的汲取通量及膜污染情况。研究发现回收率达90%以上;膜污染极易清洗;运行无需外界驱动,降低运行能耗;使用后的汲取液可在低能耗条件下进行回收再利用,大大降低处理成本。该研究结果为正渗透膜技术在污水处理过程中的应用提供了数据基础及理论依据。

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分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 115
      材料基因组是近年来兴起的材料探索方法,其研究的关键是实现材料研发的“高通量”,即并发式完成“一批”而非“一个”材料样品的计算模拟、制备和表征,实现系统的筛选和优化材料,从而加快材料从发现到应用的过程。在锂电池中,从改善安全性的角度考虑,全固态锂电池被公认为未来二次电池的重要发展方向。然而使用固体电解质材料的一个最大问题是固体电解质中锂离子电导率比常规液态电解质中低了至少一个数量级。由于锂离子的输运快慢与电池性能息息相关,因此开发兼具高离子电导率、高稳定性、高机械强度的固体电解质材料势在必行。

    中国科学院物理研究所/北京凝聚态物理国家实验室(筹)清洁能源实验室E01组近年来一直致力于将材料基因组思想用于锂电池材料的开发中。但是基于量子力学方法的离子输运性质计算的运算量很大,不适合于发展高通量算法。研究人员通过开发基于半经验势的离子输运路径与势垒计算软件BVpath(计算机软件著作权登记号:2015SR161954),并将不同计算精度的方法相结合用于材料筛选和优化的不同阶段,由此发展了基于离子输运性质的锂电池材料高通量计算流程。使用该高通量计算工具,研究人员对无机晶体结构数据库中1000 余种含锂材料的离子输运性质进行了高通量计算筛选,搜索了可能用于下一代固态锂二次电池的固态电解质材料【J Materiomics 1,325(2015)】。对于锂离子电导率较高的硫化物,采用不同精度结合的高通量计算研究了固体电解质β-Li3PS4 的掺杂优化方案,发现氧掺杂能有效提高离子电导率和改善其热力学稳定性,并通过实验验证了该方案【Sci. Rep. 5, 14227(2015); Phys. Chem. Chem. Phys. 18, 21269(2016)】。

   近期,该课题组中国工程院院士陈立泉、研究员李泓和副研究员肖睿娟指导博士生王雪龙,从上述氧掺杂硫化物的方案出发,提出了在固体电解质中引入多种阴离子共存的设计思想,并据此设计出一种全新的氧硫化物固体电解质LiAlSO材料。通过基于晶体结构预测方法的高通量计算,确定了该材料的晶体结构,并研究了其热力学稳定性、动力学稳定性和离子输运性质。计算结果显示该化合物在a轴方向具有很低的锂离子迁移势垒,属于快离子导体,有望成为固态锂电池中固体电解质的备选材料。该材料已申请国家知识产权局专利保护(专利申请号: 201710046965.8)。这是基于材料基因组思想开发出的第一个全新结构的固体电解质材料,并且将固体电解质材料的研究范围拓展至氧硫化物及混合阴离子化合物的领域。这一研究成果作为编辑推荐论文在《物理评论快报》(Physical Review Letters 118, 195901 (2017))上发表。

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分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 107
    近期,中国科学院合肥物质科学研究院固体物理研究所研究员童鹏课题组在金属负热膨胀(Negative thermal expansion, NTE)材料研究方面取得了系列进展,相关研究结果发表在Comp. Sci. Tech.、Scripta Mater.、Appl. Phys. Lett.等国际期刊上,申请中国发明专利两项。

    航空航天、微电子、精密仪器、光学器件和低温工程等领域对构件尺寸的热稳定性有着苛刻的要求。然而大多数材料在温度变化时会表现出“热胀冷缩”。温度变化时,不同构件的非协调热膨胀会导致系统功能性变差甚至失效,最终导致构件丧失原本设计的精度。而如何有效控制材料的热膨胀系数是解决上述问题的关键。

    具有“热缩冷胀”特性的负热膨胀材料可以补偿一般材料的正膨胀(positivethermal expansion, PTE),调控材料的膨胀系数,甚至实现近零膨胀(zero thermal expansion,ZTE),在上述诸多领域中材料膨胀系数的调控方面有着巨大的潜在应用价值。与陶瓷类型NTE材料相比,金属NTE材料具有良好的可加工性、导热性能(抗热冲击能力强)和力学性能,具有更广阔的应用前景。童鹏课题组近年来一直致力于新型金属NTE材料探索及相关近零膨胀复合材料研究。

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分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 117

3D打印高性能墨水材料研究获进展

      中国科学院兰州化学物理研究所固体润滑国家重点实验室表界面研究团队在3D打印高性能墨水材料方面取得进展。他们发展了3D打印高性能聚酰亚胺光敏树脂,其优异的综合性能使高精度、高耐热性、高强度复杂结构零部件和机构的直接3D快速成型制造成为可能。

    3D打印技术(亦称增材制造),是一种快速制造具有特殊复杂结构的先进成型技术。其中,光固化3D打印(如SLA、DLP等)因打印精度高、打印物体表面质量好,在制造形状特别复杂(如空心)和特别精细(如工艺品、首饰等)的零部件方面均备受国内外3D打印业关注。然而,目前用于光固化3D打印的树脂材料主要为丙烯酸脂系或环氧树脂系等材料,使用该类树脂材料打印的成型件存在机械强度差、耐高温性差、易吸湿膨胀及耐化学稳定性不佳等缺点,大多只能在100oC以下环境中使用,因此其应用主要局限在模型、样件和设计验证及艺术产品制作,而难以突破零部件直接制造的瓶颈问题。因此,发展高性能3D打印墨水材料,从而满足在汽车、航空航天、电子等综合性能要求较高领域进行实际应用,已成为国内外3D打印领域面临的重要挑战和研究重点之一。

    聚酰亚胺作为一种特种工程材料,具有优异的机械性能、耐高温性、抗化学腐蚀及优良介电特性等特点,已被广泛应用在航空、航天、微电子、纳米、液晶、分离膜、激光等领域。毫无疑问,发展高性能3D打印聚酰亚胺墨水材料将在许多领域具有广泛的应用潜能。但聚酰亚胺难溶难熔等加工问题一直是制约其应用和发展的瓶颈。因此,设计制备具有优异溶解性能的可快速光固化聚酰亚胺树脂是发展满足光固化3D打印墨水无溶剂等特殊要求的关键。

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分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 127
      近期,中国科学院合肥物质科学研究院智能机械研究所研究员黄行九课题组结合XPS技术详细研究了重金属离子与Fe/Mg/Ni三元插层纳米材料(Fe/Mg/Ni-LDH)的作用机制并成功实现对Pb(II)的高选择性检测。相关的研究成果已发表在Journal of Hazardous Materials。

    由于实际水环境中大量共存离子的存在,如何实现目标有害重金属离子高灵敏无干扰的检测一直是电分析领域的一个巨大挑战。课题组前期的研究工作发现纳米材料对重金属的电化学检测性能与其对重金属离子的吸附性能密切相关。但是如何获得对重金属离子具有选择性吸附的纳米材料及其选择性的作用机制研究还存在着很多的不足。

    该课题组选择了具有优异吸附性能的铁基层状双羟基复合金属氧化物插层材料来构筑电化学敏感界面并用于对Pb(II)的选择性的检测。研究人员结合XPS技术对Fe/Mg/Ni纳米材料的选择性检测Pb(II)的行为进行了仔细深入的研究。研究结果表明,不同重金属离子与纳米材料表面大量暴露的金属羟基键的作用方式不同。Cd(II), Zn(II), Cu(II), Hg(II)这些共存干扰离子多数是以非特异性结合的静电作用方式与解离的羟基(-O-)结合,而Pb(II)则更多的是以选择特异性的结合方式与未解离羟基形成M-O-Pb(M=Fe, Mg, Ni)。此外,在检测的最优条件下,Fe/Mg/Ni-LDH 纳米材料表面的未解离的羟基要明显多于解离的羟基,这种对不同重金属离子的差异性作用方式导致了选择性的吸附,从而最终实现选择性的检测。研究人员发现Fe/Mg/Ni三元插层纳米材料可以实现水环境中的Pb(II)高选择性无干扰检测,并获得很高的灵敏度(68.1 μA μM-1)和较低的检测限(0.032 μM)。该工作将纳米材料对重金属离子的吸附性能和电化学行为有机结合起来,为今后开发新型的纳米材料用于实际水体电化学分析检测提供了新颖的方法思路。

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分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 128

2017年1-4月材料学院SCIE论文收录

2017年1-4月交大材料学院论文被SCIE收录共计190篇 (以入库时间为准,数据库更新时间:2017-5-17)
(通讯作者署名上海交大材料学院的,文章序号前以星号*标识)

1. (002)-oriented WS2 with high crystalline with enhanced capacity as anode material for sodium ion batteries
作者:Wang X., Huang J. F., Li J. Y., Cao L. Y., Hao W., Xu Z. W., Kang Q.
来源:Journal of Alloys and Compounds, volume: 696, issue:  pages:22-27. Published: 2017

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Tags: 材料 SCIE收录

分类:信息导航 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 308
      近期,中国科学院合肥物质科学研究院固体物理研究所极端环境量子物质中心研究员Alexander F. Goncharov领导的研究团队,在基于硫氢的高温超导材料合成方面取得新突破。相关研究工作以Stable high-pressure phases in the H-S system determined by chemically reacting hydrogen and sulfur 为题发表在《物理评论B》(Phys. Rev. B 95, 140101 (2017))杂志上。

    硫氢体系200K超导电性的发现是过去一年凝聚态物理领域的重要事件,目前理论上普遍预测的高温超导相H3S的结构的H3S相是最稳定的,其高温超导性质正是来源于这个相,而不是H2S—H2,首次证实了理论上关于高温超导相预测的正确性,他们的结果提供了大量H3S高温超导相的结构、特征振动光谱等光学性质,结束了理论和实验之间关于高温超导相的争论。

    该研究是Alexander F. Goncharov以固体所为第一作者单位发表的第二篇关于硫氢体系的文章,这些结果对于理解超导相和组份、控制超导性的高温高压合成、研究超导机制都具有十分重要的意义。加入固体所量子中心后,Alexander F. Goncharov曾在Nature、Science杂志上发表过研究论文,报道了合肥物质科学研究基地在极端高压高温环境方面取得的成果。这些成果得益于固体所极端环境量子物质中心系统高压研究平台的建立,特别是高压氢冲载的成功实施。

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分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 152

 日前,中国科学院金属研究所沈阳材料科学国家(联合)实验室卢柯研究组发现通过适当合金元素的晶界偏聚可以提高晶界稳定性,从而可以大幅度调控纳米金属的强度。该研究得到科技部国家重大科学研究计划和国家自然基金资助。该成果发表于2017年3月24日出版的Science(《科学》)。

 
金属材料的强度或硬度往往随晶粒尺寸减小而增加,遵循基于位错塞积变形机制的Hall-Petch关系,即强度的增加与晶粒尺寸的平方根成反比。而当晶粒尺寸低于某临界晶粒尺寸(通常为10-30纳米)时,金属的强度会偏离Hall-Petch关系,有些金属的强度不再升高甚至下降,这种纳米尺度下的软化现象通常归因于纳米金属中大量晶界的迁移。
 
卢柯研究组利用电解沉积方法制备出晶粒尺寸从30纳米到3.4纳米变化的一系列Ni-Mo合金样品,发现当晶粒尺寸小于10纳米时合金出现软化行为。通过适当温度的退火处理,他们利用晶界弛豫以及Mo原子在晶界上的偏聚,使材料硬度明显提高,最高可达11.35GPa。
 
这一结果表明,晶粒尺寸相同的纳米材料,其硬度可以通过调控晶界稳定性而大幅度地变化,既可硬化也可软化。该发现揭示了纳米材料中软化和硬化行为本质,澄清了过去三十多年来关于这一问题的争论。同时表明在纳米金属中硬度不仅依赖于晶粒尺寸,也受控于晶界稳定性。晶界稳定性可成为纳米材料中除晶粒尺寸之外的另一个性能调控维度。
 
纳米金属中的不同硬度变化源于不同的塑性变形机制。卢柯研究组与法国UNIROUEN及南京理工大学的合作者利用原子探针技术和高分辨率电子显微术发现,制备态纳米Ni-Mo样品中的软化行为是由于机械驱动的晶界迁移变形机制所致。而纳米Ni-Mo样品在退火过程中发生了晶界弛豫及溶质原子的晶界偏析,降低了晶界能,提高了晶界的稳定性,使晶界行为在外力作用下难以启动,塑性变形通过拓展不全位错的形核及运动来实现。由于位错形核应力与晶粒尺寸的倒数成正比,样品硬度随晶粒尺寸减小不降反升。极小晶粒尺寸纳米金属的硬化及软化行为充分展现了由晶界稳定性控制的微观变形机制转变。这一发现为设计及制备具有如超高硬度等优异性能的新型纳米金属材料提供了新思路。
 
分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 136

 晶粒尺寸相同的纳米材料,其硬度可以通过调控晶界稳定性而大幅度变化,既可硬化也可软化。26日,中科院沈阳金属所称,由该所沈阳材料科学国家(联合)实验室卢柯研究组研究出的这一成果,发表于3月24日出版的最新一期《科学》上,为科学家大幅度调控纳米金属的强度提供了可能。

 
据卢柯介绍,中国科学院金属研究所沈阳材料科学国家(联合)实验室发现通过适当合金元素的晶界偏聚可以提高晶界稳定性,从而可以大幅度调控纳米金属的强度。他们利用电解沉积方法制备出晶粒尺寸从30纳米到3.4纳米变化的一系列Ni-Mo合金样品,发现当晶粒尺寸小于10纳米时合金出现软化行为。通过适当温度的退火处理,利用晶界弛豫以及Mo原子在晶界上的偏聚,使材料硬度明显提高,最高可达11.35GPa。这一结果表明,晶粒尺寸相同的纳米材料,其硬度可以通过调控晶界稳定性而大幅度变化。这一发现揭示了纳米材料中软化和硬化行为本质,澄清了过去三十多年来关于这一问题的争论。同时表明在纳米金属中硬度不仅依赖于晶粒尺寸,也受控于晶界稳定性。晶界稳定性可成为纳米材料中除晶粒尺寸之外的另一个性能调控维度。
 
记者了解到,纳米金属中的不同硬度变化源于不同的塑性变形机制。卢柯研究组与法国UNIROUEN及南京理工大学的合作者利用原子探针技术和高分辨率电子显微术发现,制备态纳米Ni-Mo样品中的软化行为是由于机械驱动的晶界迁移变形机制所致。而纳米Ni-Mo样品在退火过程中发生了晶界弛豫及溶质原子的晶界偏析,降低了晶界能,提高了晶界的稳定性,使晶界行为在外力作用下难以启动,塑性变形通过拓展不全位错的形核及运动来实现。由于位错形核应力与晶粒尺寸的倒数成正比,样品硬度随晶粒尺寸减小不降反升。极小晶粒尺寸纳米金属的硬化及软化行为充分展现了由晶界稳定性控制的微观变形机制转变。这一发现为设计及制备具有超高硬度等优异性能的新型纳米金属材料提供了新思路。相关研究得到了科技部国家重大科学研究计划和国家自然基金资助。
分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 149

为未来“明星材料”奠定科学基础

 有机电视、电子纸、有机照明、有机太阳能电池……对普通人而言,“有机电子学”的概念可能是陌生的,但其应用已经走进了人们的视野。据国际知名有机电子咨询机构IDTechEx计算,有机电子器件在未来的20年里,有可能占据3000亿美元的市场份额,成为一个庞大的商业领域。

 
在有机电子学中,有机场效应晶体管是最基本的元器件之一,也是有机电路的基础和核心。对于化学家而言,如何从结构和性能的关系出发,设计、合成综合性能优异的有机场效应材料等科学问题,已经成为他们工作的重心。
 
多年来,中国科学院化学研究所科研人员围绕有机场效应晶体管基本的物理化学问题开展了多项卓有成效的工作,为这一未来“明星材料”的发展奠定了科学基础。今年,这些工作荣获了2016年度国家自然科学奖二等奖。
 
发展有机场效应材料
 
因为被认为不具有导电性质,有机材料一直被广泛用作绝缘材料。直到二十世纪七十年代以来,美国科学家艾伦·黑格(Alan J.Heeger)等人发现,对聚乙炔分子进行掺杂能将其变成良好的导体,掀起了有机功能材料的革命。
 
有机场效应晶体管便是有机功能材料的应用之一。和其他场效应晶体管一样,有机场效应晶体管的原理也是利用控制输入回路的电场效应来控制输出回路电流,不同之处则在于,其利用有机半导体材料充当运载电荷的“载流子”传输层。提高迁移率是研究这一领域科学家共同追求的目标。
 
1996年以来,中科院化学所胡文平开始从事有机场效应晶体管的研究。“我们从结构和能量出发设计分子。”胡文平告诉《中国科学报》记者。原理上,分子密堆有利于电荷快速传输,获得高迁移率,但分子间斥力会让分子密堆变得困难。
 
项目组通过系列研究,发现“分子二维平面砖状堆积”能有效突破这一矛盾。例如,胡文平和同事们发现,α相酞菁氧钛(TiOPc)分子具有金字塔形的特异结构,能够形成良好的“二维平面砖状堆积”,迁移率高达10 cm2V-1s-1。这在当时是迁移率最高、性能最好的场效应材料。
 
开拓有机微纳晶电子学
 
在科学家们看来,有机晶体承担着正确评价半导体材料、揭示材料本征性能的使命。然而,有机晶体因生长困难难以制备器件,所以,对有机半导体的构效关系研究是有机电子学面临的长期挑战。而有机微纳晶生长快速,能有效克服有机晶体生长的挑战、实现对材料的高效表征。
 
“将有机晶体与微纳器件有机地结合起来,能够建立和发展新的学科方向。”胡文平指出。多年来,他带领项目组开展了有机微纳晶的多项相关研究。项目组从分子结构、分子间作用力出发,通过界面能、晶面能等生长参数的调控,发明了“物理气相外延”等方法生长规整的有机微纳晶、完善了生长理论。
 
同时,研究人员通过“微纳线模板法”,制备了场效应晶体管,实现了利用有机微纳晶高效揭示材料本征性能、构筑高性能器件的目标。英国皇家学会院士、剑桥大学卡文迪许实验室教授亨宁·西林豪斯(Henning Sirringhaus),美国工程院院士、斯坦福大学教授鲍哲楠,马普高分子所原所长克劳斯·慕乐(Klaus Muellen)等业内专家高度评价了这项工作,指出“这是第一个基于有机微纳晶的场效应晶体管,是迁移率最高、性能最好的单根线晶体管,是未来光电子集成的关键元件,也是后硅基计算机时代的希望”。
 
培养优秀人才队伍
 
对胡文平而言,探索之路没有就此停止。截至2012年12月,全球有57种迁移率超过或接近无定型硅的有机半导体材料,胡文平及其合作者报道的就有15种。
 
不过,在胡文平看来,长期开展有机场效应晶体管研究的收获并不仅是获得学术成果。“我们在研究中,培养了大量优秀的人才。”他指出。例如,项目组有学生先后多次获得“中科院院长特别奖”,也有博士生在学位论文方面荣获“中国科学院优秀博士学位论文”、“北京市优秀博士学位论文”和“全国优秀博士学位论文”。
 
目前,胡文平的研究团队中已经有15人成为教授。“他们都是我国有机电子学研究的骨干和中流砥柱。”胡文平表示。
分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 140

 爱思唯尔27日发布2016年中国高被引学者(Most Cited Chinese Researchers)榜单,榜单内容可在爱思唯尔科技部中国区网站查阅浏览。

2016年中国高被引学者榜单采用上海软科教育信息咨询有限公司(ShanghaiRanking Consultancy)开发的方法和标准,基于客观引用数据对中国研究者在世界范围内的影响力进行了系统的分析。爱思唯尔作为合作方,为该榜单研究提供了数据支持和技术实现。

随着中国在国际科研领域的影响力和地位不断提高,表彰引领学术进步的杰出学者显得尤为重要。中国高被引学者榜单根据去年的结果进行了复查和更新,将1776名最具世界影响力的中国学者呈现给学术界和公众。

2016年中国高被引学者榜单的研究数据来自爱思唯尔旗下的Scopus数据库。Scopus是全球最大的同行评议学术论文索引摘要数据库,提供了海量的与科研活动有关的文献、作者和研究机构数据,使得对中国学者的世界影响力进行科学的分析和评价成为可能。

本榜单排序不分先后。

学者姓名

目前工作单位

学术领域

王中林

中国科学院

材料科学

赵东元

复旦大学

材料科学

余家国

武汉理工大学

材料科学

俞书宏

中国科学技术大学

材料科学

钱逸泰

中国科学技术大学

材料科学

李述汤

苏州大学

材料科学

林君

中国科学院

材料科学

高濂

上海交通大学

材料科学

谢毅

中国科学技术大学

材料科学

成会明

中国科学院

材料科学

石高全

清华大学

材料科学

田禾

华东理工大学

材料科学

李永舫

中国科学院

材料科学

江雷

北京航空航天大学

材料科学

南策文

清华大学

材料科学

张俐娜

武汉大学

材料科学

卢柯

中国科学院

材料科学

施剑林

中国科学院

材料科学

刘庄

苏州大学

材料科学

高超

浙江大学

材料科学

孙润仓

北京林业大学

材料科学

闫冰

同济大学

材料科学

李长明

西南大学

材料科学

薛冬峰

中国科学院

材料科学

涂江平

浙江大学

材料科学

刘云圻

中国科学院

材料科学

陈乾旺

中国科学技术大学

材料科学

刘世勇

中国科学技术大学

材料科学

高长有

浙江大学

材料科学

朱彦武

中国科学技术大学

材料科学

叶金花

南京大学

材料科学

汪卫华

中国科学院

材料科学

吴奇

中国科学技术大学

材料科学

齐利民

北京大学

材料科学

范壮军

哈尔滨工程大学

材料科学

张先正

武汉大学

材料科学

杨德仁

浙江大学

材料科学

陈萍

中国科学院

材料科学

曹镛

华南理工大学

材料科学

唐智勇

中国科学院

材料科学

胡源

中国科学技术大学

材料科学

景遐斌

中国科学院

材料科学

万梅香

中国科学院

材料科学

Vayssières, Lionel

西安交通大学

材料科学

危岩

清华大学

材料科学

杨柏

吉林大学

材料科学

黄维

南京工业大学

材料科学

范守善

清华大学

材料科学

黄争鸣

同济大学

材料科学

李玉良

中国科学院

材料科学

王文中

中国科学院

材料科学

朱英杰

中国科学院

材料科学

王忠胜

复旦大学

材料科学

吴季怀

华侨大学

材料科学

钟志远

苏州大学

材料科学

胡俊青

东华大学

材料科学

李敬锋

清华大学

材料科学

颜德岳

上海交通大学

材料科学

徐铜文

中国科学技术大学

材料科学

韩伟强

中国科学院

材料科学

傅强

四川大学

材料科学

徐志康

浙江大学

材料科学

付绍云

中国科学院

材料科学

马万里

苏州大学

材料科学

武利民

复旦大学

材料科学

杜予民

武汉大学

材料科学

蒋青

吉林大学

材料科学

崔福斋

清华大学

材料科学

侯剑辉

中国科学院

材料科学

蒋建中

浙江大学

材料科学

王太宏

厦门大学

材料科学

陈学思

中国科学院

材料科学

朱静

清华大学

材料科学

潘才元

中国科学技术大学

材料科学

邹志刚

南京大学

材料科学

张哲峰

中国科学院

材料科学

章明秋

中山大学

材料科学

常江

中国科学院

材料科学

孙晓明

北京化工大学

材料科学

曲良体

北京理工大学

材料科学

王元生

中国科学院

材料科学

李峻柏

中国科学院

材料科学

徐安武

中国科学技术大学

材料科学

徐东升

北京大学

材料科学

张洪杰

中国科学院

材料科学

智林杰

中国科学院

材料科学

申有青

浙江大学

材料科学

李玉宝

四川大学

材料科学

孙聆东

北京大学

材料科学

曹化强

清华大学

材料科学

卢磊

中国科学院

材料科学

方晓生

复旦大学

材料科学

唐凯斌

中国科学技术大学

材料科学

占肖卫

北京大学

材料科学

姜炜

南京理工大学

材料科学

刘益春

东北师范大学

材料科学

彭奎庆

北京师范大学

材料科学

徐艺军

福州大学

材料科学

曲晓刚

中国科学院

材料科学

孟跃中

中山大学

材料科学

党智敏

北京科技大学

材料科学

任文才

中国科学院

材料科学

郭玉国

中国科学院

材料科学

万青

南京大学

材料科学

丁建东

复旦大学

材料科学

张立群

北京化工大学

材料科学

吕孟凯

山东大学

材料科学

陈代荣

山东大学

材料科学

钱雪峰

上海交通大学

材料科学

王秀丽

渤海大学

材料科学

杨启华

中国科学院

材料科学

黄柏标

山东大学

材料科学

沈国震

中国科学院

材料科学

褚良银

四川大学

材料科学

张覃

贵州大学

材料科学

冯庆玲

清华大学

材料科学

李文智

聊城大学

材料科学

郑思珣

上海交通大学

材料科学

蔡伟平

中国科学院

材料科学

胡勇胜

中国科学院

材料科学

宋宏伟

吉林大学

材料科学

赵宇亮

中国科学院

材料科学

刘金平

武汉理工大学

材料科学

唐芳琼

中国科学院

材料科学

瞿保钧

中国科学技术大学

材料科学

邓勇辉

复旦大学

材料科学

李延辉

青岛大学

材料科学

吴宏滨

华南理工大学

材料科学

李春霞

中国科学院

材料科学

李春

清华大学

材料科学

谢华清

上海第二工业大学

材料科学

黄飞

华南理工大学

材料科学

韩艳春

中国科学院

材料科学

周峰

中国科学院

材料科学

王秀丽

浙江大学

材料科学

陈志钢

东华大学

材料科学

谷长栋

浙江大学

材料科学

郭益平

上海交通大学

材料科学

李峰

中国科学院

材料科学

梁永晔

南方科技大学

材料科学

申来法

南京航空航天大学

材料科学

原长洲

安徽工业大学

材料科学

朱运田

南京理工大学

材料科学

 

分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 162

2016年聚合物领域10大高被引论文

 [1].  Canning S L, Smith G N, Armes S P.

A Critical Appraisal of RAFT-Mediated Polymerization-Induced Self Assembly[J]. Macromolecules, 2016, 49(6): 1985-2001.

被引次数:50

[Abstract]Recently, polymerization-induced self-assembly (PISA) has become widely recognized as a robust and efficient route to produce block copolymer nanoparticles of controlled size, morphology, and surface chemistry. Several reviews of this field have been published since 2012, but a substantial number of new papers have been published in the last three years. In this Perspective, we provide a critical appraisal of the various advantages offered by this approach, while also pointing out some of its current drawbacks: Promising future research directions as well as remaining technical challenges and unresolved problems are briefly highlighted.

 

[2].  Derry M J, Fielding L A, Armes S P.

Polymerization-induced self-assembly of block copolymer nanoparticles via RAFT non-aqueous dispersion polymerization[J]. Progress In Polymer Science, 2016, 521-18.

被引次数:49

[Abstract]There is considerable current interest in polymerization-induced self-assembly (PISA) via reversible addition-fragmentation chain transfer (RAFT) polymerization as a versatile and efficient route to various types of block copolymer nano-objects. Many successful PISA syntheses have been conducted in water using either RAFT aqueous dispersion polymerization or RAFT aqueous emulsion polymerization. In contrast, this review article is focused on the growing number of RAFT PISA formulations developed for non-aqueous media. A wide range of monomers have been utilized for both the stabilizer and core-forming blocks to produce diblock copolymer nanoparticles in either polar or non-polar media (including supercritical CO2 and ionic liquids) via RAFT dispersion polymerization. Such nanoparticles possess spherical, worm-like or vesicular morphologies, often with controllable size and functionality. Detailed characterization of such sterically stabilized diblock copolymer dispersions provides important insights into the various morphological transformations that can occur both during the PISA synthesis and also on subsequent exposure to a suitable external stimulus (e.g. temperature).

 

[3].  Dai Z D, Noble R D, Gin D L, Zhang X P, Deng L Y.

Combination of ionic liquids with membrane technology: A new approach for CO2 separation[J]. Journal Of Membrane Science, 2016, 4971-20.

被引次数:46

[Abstract]This paper presents details of recent research progress on CO2 separation membranes and membrane processes using ionic liquids (ILs) over the past few years, including supported ionic liquid membranes (SILMs), poly(ionic liquid) membranes (PILMs), poly(ionic liquid)-ionic liquid (PIL-IL) composite membranes, polymer-ionic liquid composite membranes, ion-gel membranes, and membrane absorption processes based on ILs. Descriptions of different approaches to membrane preparation, use of gas transport mechanisms, and state-of-the-art separation results are discussed in the context of breakthroughs and challenges. Furthermore, comprehensive assessment of recently improved membranes and possible future R&D prospective are also discussed.

 

[4].  She Q H, Wang R, Fane A G, Tang C Y Y.

Membrane fouling in osmotically driven membrane processes: A review[J]. Journal Of Membrane Science, 2016, 499201-233.

被引次数:41

[Abstract]The utilization of osmosis for engineered applications sparked off various emerging technologies relying on osmotically driven membrane processes (ODMPs). Represented by forward osmosis (FO) and pressure retarded osmosis (PRO), ODMPs show great promise to leverage the global water-energy nexus and have drawn considerable attention in recent years. However, their performance in practical applications is significantly affected by membrane fouling. Membrane fouling is a complex problem and is associated with the foulant deposition, concentration polarization and reverse solute diffusion (RSD) in ODMPs. The current paper provides a comprehensive review on membrane fouling in ODMPs with a focus on the elaboration of the factors and mechanisms governing the fouling behavior. Among those fouling factors and mechanisms, some are also applicable for pressure-driven membrane processes (e.g., reverse osmosis (RO) and nanofiltration (NF)), such as the effects of hydrodynamic conditions, feedwater composition, and membrane material and properties, and the cake-enhanced concentration polarization (CE-CP) mechanism. Others are unique for ODMPs, such as the effects of draw solution composition and membrane orientation, the internal concentration polarization (ICP) self-compensation effect, and the RSD-enhanced fouling. A general osmotic-resistance filtration model for ODMPs is presented in this paper to assist in the interpretation of the intrinsic interrelationships among those fouling factors and mechanisms. The impact and mechanisms of membrane fouling on contaminates removal are also reviewed briefly based on the limited existing literature on this topic. Finally, the available membrane fouling control strategies for ODMPs are summarized upon understanding the cause and effect of fouling. Based on the current review, future research prospects are proposed for further studying the membrane fouling in ODMPs.

 

[5].  Altintas O, Barner-Kowollik C. Single-Chain Folding of Synthetic Polymers: A Critical Update[J]. Macromolecular Rapid Communications, 2016, 37(1): 29-46.

被引次数:28

[Abstract]The current contribution serves as a critical update to a previous feature article from us (Macromol. Rapid Commun. 2012, 33, 958-971), and highlights the latest advances in the preparation of single chain polymeric nanoparticles and initial-yet promising-attempts towards mimicking the structure of natural biomacromolecules via single-chain folding of well-defined linear polymers via so-called single chain selective point folding and repeat unit folding. The contribution covers selected examples from the literature published up to ca. September 2015. Our aim is not to provide an exhaustive review but rather highlight a selection of new and exciting examples for single-chain folding based on advanced macromolecular precision chemistry. Initially, the discussion focuses on the synthesis and characterization of single-chain folded structures via selective point folding. The second part of the feature article addresses the folding of well-defined single-chain polymers by means of repeat unit folding. The current state of the art in the field of single-chain folding indicates that repeat unit folding-driven nanoparticle preparation is well-advanced, while initial encouraging steps towards building selective point folding systems have been taken. In addition, a summary of the-in our view-open key questions is provided that may guide future biomimetic design efforts.

 

[6].  Madsen F B, Daugaard A E, Hvilsted S, Skov A L. The Current State of Silicone-Based Dielectric Elastomer Transducers[J]. Macromolecular Rapid Communications, 2016, 37(5): 378-413.

被引次数:28

[Abstract]Silicone elastomers are promising materials for dielectric elastomer transducers (DETs) due to their superior properties such as high efficiency, reliability and fast response times. DETs consist of thin elastomer films sandwiched between compliant electrodes, and they constitute an interesting class of transducer due to their inherent lightweight and potentially large strains. For the field to progress towards industrial implementation, a leap in material development is required, specifically targeting longer lifetime and higher energy densities to provide more efficient transduction at lower driving voltages. In this review, the current state of silicone elastomers for DETs is summarised and critically discussed, including commercial elastomers, composites, polymer blends, grafted elastomers and complex network structures. For future developments in the field it is essential that all aspects of the elastomer are taken into account, namely dielectric losses, lifetime and the very often ignored polymer network integrity and stability.

 

[7].  Liu X D, Zhang L F, Cheng Z P, Zhu X L. Metal-free photoinduced electron transfer-atom transfer radical polymerization (PET-ATRP) via a visible light organic photocatalyst[J]. Polymer Chemistry, 2016, 7(3): 689-700.

被引次数:27

[Abstract]The development of an atom transfer radical polymerization (ATRP) system without any transition metal catalyst for electronic and biomedical applications was considered to be in pressing need. Fluorescein (FL) was used as the organic photocatalyst for the polymerization of methyl methacrylate (MMA) via the proposed photoinduced electron transfer-atom transfer radical polymerization (PET-ATRP) mechanism. In the presence of electron donors provided by triethylamine (TEA), fluorescein can activate alkyl bromide and control radical polymerizations by a reductive quenching pathway. The polymerizations could be controlled by an efficient activation and deactivation equilibrium while maintaining the attractive features of "living" radical polymerization. The number-average molecular weight M-n,M-GPC increased with monomer conversion, and the controllability of molecular weight distributions for the obtained PMMA could be achieved in the polymerization processes. MALDI-TOF MS, H-1 NMR spectroscopy and chain extension polymerizations show reserved chain-end functionality in the synthesized polymers and further confirm the "living" feature of the metal-free ATRP methodology. All these research results support the feasibility of the visible light mediated metal-free PET-ATRP platform for the synthesis of elegant macromolecular structures.

 

[8].  Nam S, French A D, Condon B D, Concha M. Segal crystallinity index revisited by the simulation of X-ray diffraction patterns of cotton cellulose I beta and cellulose II[J]. Carbohydrate Polymers, 2016, 1351-9.

被引次数:27

[Abstract]The Segal method estimates the amorphous fraction of cellulose I beta materials simply based on intensity at 18 degrees 2 theta in an X-ray diffraction pattern and was extended to cellulose II using 16 degrees 2 theta intensity. To address the dependency of Segal amorphous intensity on crystal size, cellulose polymorph, and the degree of polymorphic conversion, we simulated the diffraction patterns of cotton celluloses (1 beta and II) and compared the simulated amorphous fractions with the Segal values. The diffraction patterns of control and mercerized cottons, respectively, were simulated with perfect crystals of cellulose I beta (1.54 degrees FWHM) and cellulose 11 (2.30 degrees FWHM) as well as 10% and 35% amorphous celluloses. Their Segal amorphous fractions were 15% and 31%, respectively. The higher Segal amorphous fraction for control cotton was attributed to the peak overlap. Although the amorphous fraction was set in the simulation, the peak overlap induced by the increase of FWHM further enhanced the Segal amorphous intensity of cellulose I beta. For cellulose II, the effect of peak overlap was smaller; however the lower reflection of the amorphous cellulose scattering in its Segal amorphous location resulted in smaller Segal amorphous fractions. Despite this underestimation, the relatively good agreement of the Segal method with the simulation for mercerized cotton was attributed to the incomplete conversion to cellulose II. The (1 - 10) and (1 - 10) peaks of cellulose I beta remained near the Segal amorphous location of cellulose II for blends of control and mercerized cotton fibers. Published by Elsevier Ltd.

 

[9].  Wang S, Lu A, Zhang L N. Recent advances in regenerated cellulose materials[J]. Progress In Polymer Science, 2016, 53169-206.

被引次数:26

[Abstract]The dual threats of the depletion of nonrenewable energy and environmental pollution caused by petroleum-based polymers motivate utilization of naturally occurring polymers to create new materials. Cellulose, as the most abundant natural polymer on earth, has attracted attention due to its renewability, wide availability, low-cost, biocompatibility and biodegradability, etc. Regenerated cellulose may be constructed simply via physical dissolution and regeneration, an environmentally friendly process avoiding the consuming of chemicals since most of the reagents (solvents, coagulant, etc.) may be recycled and reused. "Green" solvents and techniques for the preparation of the environmentally friendly regenerated cellulose materials have been developed successfully, showing great potentials in the fields of polymer science and technology. In this article, the widely used non-derivatizing cellulose solvents are summarized, including their dissolution mechanisms. Regenerated cellulose materials with different functions and properties have been designed and fabricated in different forms, such as filaments, films/membranes, microspheres/beads, hydrogels/aerogels and bioplastics, etc., to meet various demands. The concept of regeneration through a physical process is illustrated, and a number of novel regenerated cellulose materials are introduced for wide applications in textiles, packaging, biomedicine, water treatment, optical/electrical devices, agriculture and food, etc. The methodology of material processing and the resultant properties and functions are also covered in this review, with emphasis on the neat regenerated cellulose materials and the composite materials. The 277 references cited concerning the direct preparation of cellulose materials via physical dissolution and regeneration are representative of the wide impact and benefits of the regenerated cellulose materials to society.

 

[10].       Hanlon A M, Lyon C K, Berda E B. What Is Next in Single-Chain Nanoparticles?[J]. Macromolecules, 2016, 49(1): 2-14.

被引次数:26

[Abstract]With the increasing appeal of nanotechnology, there is a demand for development of synthetic techniques for the fabrication of nanosized objects that allow for precise size control and tailored functionalization. To this end, the collapse or folding of single polymer chains into architecturally defined nanostructures is a rapidly growing research topic in polymer science. Many synthetic approaches have been developed for the formation of single-chain nanoparticles (SCNP), and a variety of characterization methods and computational efforts have been utilized to detail their formation and probe their morphological characteristics. Interest in this field continues to grow partially due to the variety of potential applications of SCNP including catalysis, sensors, nanoreactors, and nanomedicine. While numerous developments have been made, the field is continuing to evolve, and there are still many unanswered questions regarding synthesis and characterization of SCNP. This Perspective serves to identify recent accomplishments in the synthesis and characterization of SCNP while distinguishing areas that are in need of advancement and innovation to move forward. This includes exploring more complex synthetic strategies, obtaining folding control, employing nanoparticle functionalization, developing scalable methods, investigating hierarchical self-assembly of SCNP, and exploiting unique characterization techniques and in-depth simulations.

分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 147

2016年纳米技术领域10大高被引论文

 [1].  You J B, Meng L, Song T B, Guo T F, Yang Y, Chang W H, Hong Z R, Chen H J, Zhou H P, Chen Q, Liu Y S, De Marco N, Yang Y.

Improved air stability of perovskite solar cells via solution-processed metal oxide transport layers[J]. Nature Nanotechnology, 2016, 11(1): 75-+.

被引次数:190

[Abstract]Lead halide perovskite solar cells have recently attracted tremendous attention because of their excellent photovoltaic efficiencies. However, the poor stability of both the perovskite material and the charge transport layers has so far prevented the fabrication of devices that can withstand sustained operation under normal conditions. Here, we report a solution-processed lead halide perovskite solar cell that has p-type NiOx and n-type ZnO nanoparticles as hole and electron transport layers, respectively, and shows improved stability against water and oxygen degradation when compared with devices with organic charge transport layers. Our cells have a p-i-n structure (glass/indium tin oxide/NiOx/perovskite/ZnO/Al), in which the ZnO layer isolates the perovskite and Al layers, thus preventing degradation. After 60 days storage in air at room temperature, our all-metal-oxide devices retain about 90% of their original efficiency, unlike control devices made with organic transport layers, which undergo a complete degradation after just 5 days. The initial power conversion efficiency of our devices is 14.6 +/- 1.5%, with an uncertified maximum value of 16.1%.

 

[2].  Zhao W C, Qian D P, Zhang S Q, Li S S, Inganas O, Gao F, Hou J H.

Fullerene-Free Polymer Solar Cells with over 11% Efficiency and Excellent Thermal Stability[J]. Advanced Materials, 2016, 28(23): 4734-4739.

被引次数:179

[Abstract]A nonfullerene-based polymer solar cell (PSC) that significantly outperforms fullerene-based PSCs with respect to the power-conversion efficiency is demonstrated for the first time. An efficiency of >11%, which is among the top values in the PSC field, and excellent thermal stability is obtained using PBDB-T and ITIC as donor and acceptor, respectively.

 

[3].  Wang J H, Cui W, Liu Q, Xing Z C, Asiri A M, Sun X P.

Recent Progress in Cobalt-Based Heterogeneous Catalysts for Electrochemical Water Splitting[J]. Advanced Materials, 2016, 28(2): 215-230.

被引次数:118

[Abstract]Water electrolysis is considered as the most promising technology for hydrogen production. Much research has been devoted to developing efficient electrocatalysts for hydrogen production via the hydrogen evolution reaction (HER) and oxygen production via the oxygen evolution reaction (OER). The optimum electrocatalysts can drive down the energy costs needed for water splitting via lowering the overpotential. A number of cobalt (Co)-based materials have been developed over past years as non-noble-metal heterogeneous electrocatalysts for HER and OER. Recent progress in this field is summarized here, especially highlighting several important bifunctional catalysts. Various approaches to improve or optimize the electrocatalysts are introduced. Finally, the current existing challenges and the future working directions for enhancing the performance of Co-implicated electrocatalysts are proposed.

 

[4].  Jahani S, Jacob Z. All-dielectric metamaterials[J].

Nature Nanotechnology, 2016, 11(1): 23-36.

被引次数:97

[Abstract]The ideal material for nanophotonic applications will have a large refractive index at optical frequencies, respond to both the electric and magnetic fields of light, support large optical chirality and anisotropy, confine and guide light at the nanoscale, and be able to modify the phase and amplitude of incoming radiation in a fraction of a wavelength. Artificial electromagnetic media, or metamaterials, based on metallic or polar dielectric nanostructures can provide many of these properties by coupling light to free electrons (plasmons) or phonons (phonon polaritons), respectively, but at the inevitable cost of significant energy dissipation and reduced device efficiency. Recently, however, there has been a shift in the approach to nanophotonics. Low-loss electromagnetic responses covering all four quadrants of possible permittivities and permeabilities have been achieved using completely transparent and high-refractive-index dielectric building blocks. Moreover, an emerging class of all-dielectric metamaterials consisting of anisotropic crystals has been shown to support large refractive index contrast between orthogonal polarizations of light. These advances have revived the exciting prospect of integrating exotic electromagnetic effects in practical photonic devices, to achieve, for example, ultrathin and efficient optical elements, and realize the long-standing goal of subdiffraction confinement and guiding of light without metals. In this Review, we present a broad outline of the whole range of electromagnetic effects observed using all-dielectric metamaterials: high-refractive-index nanoresonators, metasurfaces, zero-index metamaterials and anisotropic metamaterials. Finally, we discuss current challenges and future goals for the field at the intersection with quantum, thermal and silicon photonics, as well as biomimetic metasurfaces.

 

[5].  Ariga K, Li J B, Fei J B, Ji Q M, Hill J P.

Nanoarchitectonics for Dynamic Functional Materials from Atomic-/Molecular-Level Manipulation to Macroscopic Action[J]. Advanced Materials, 2016, 28(6): 1251-1286.

被引次数:94

[Abstract]Objects in all dimensions are subject to translational dynamism and dynamic mutual interactions, and the ability to exert control over these events is one of the keys to the synthesis of functional materials. For the development of materials with truly dynamic functionalities, a paradigm shift from nanotechnology to nanoarchitectonics is proposed, with the aim of design and preparation of functional materials through dynamic harmonization of atomic-/molecular-level manipulation and control, chemical nanofabrication, self-organization, and field-controlled organization. Here, various examples of dynamic functional materials are presented from the atom/molecular-level to macroscopic dimensions. These systems, including atomic switches, molecular machines, molecular shuttles, motional crystals, metal-organic frameworks, layered assemblies, gels, supramolecular assemblies of biomaterials, DNA origami, hollow silica capsules, and mesoporous materials, are described according to their various dynamic functions, which include short-term plasticity, long-term potentiation, molecular manipulation, switchable catalysis, self-healing properties, supramolecular chirality, morphological control, drug storage and release, light-harvesting, mechanochemical transduction, molecular tuning molecular recognition, hand-operated nanotechnology.

 

[6].  Ding H, Yu S B, Wei J S, Xiong H M.

Full-Color Light-Emitting Carbon Dots with a Surface-State-Controlled Luminescence Mechanism[J]. Acs Nano, 2016, 10(1): 484-491.

被引次数:74

[Abstract]Carbon dots (CDs) with tunable photoluminescence (PL) and a quantum yield of up to 35% in water were hydrothermally synthesized in one pot and separated via silica column chromatography. These separated CDs emitted bright and stable luminescence in gradient colors from blue to red under a single-wavelength UV light. They exhibited high optical uniformity; that is, every sample showed only one peak in the PL excitation spectrum, only one peak in the excitation-independent PL emission spectrum, and similar monoexponential fluorescence lifetimes. Although these samples had similar distributions of particle size and graphite structure in their carbon cores, the surface state gradually varied among the samples, especially the degree of oxidation. Therefore, the observed red shift in their emission peaks from 440 to 625 nm was ascribed to a gradual reduction in their band gaps with the increasing incorporation of oxygen species into their surface structures. These energy bands were found to depend on the surface groups and structures but not on the particle size, not as in traditional semiconductor quantum dots. In addition, because of their excellent PL properties and low cytotoxicity, these CDs could be used to image cells in different colors under a single-wavelength light source, and the red-emitting CDs could be used to image live mice because of the strong penetration capability of their fluorescence.

 

[7].  Li X M, Wu Y, Zhang S L, Cai B, Gu Y, Song J Z, Zeng H B.

CsPbX3 Quantum Dots for Lighting and Displays: Room-Temperature Synthesis, Photoluminescence Superiorities, Underlying origins and White Light-Emitting Diodes[J]. Advanced Functional Materials, 2016, 26(15): 2435-2445.

被引次数:71

[Abstract]Recently, Kovalenko and co-workers and Li and co-workers developed CsPbX3 (X = Cl, Br, I) inorganic perovskite quantum dots (IPQDs), which exhibited ultrahigh photoluminescence (PL) quantum yields (QYs), low-threshold lasing, and multicolor electroluminescence. However, the usual synthesis needs high temperature, inert gas protection, and localized injection operation, which are severely against applications. Moreover, the so unexpectedly high QYs are very confusing. Here, for the first time, the IPQDs' room-temperature (RT) synthesis, superior PL, underlying origins and potentials in lighting and displays are reported. The synthesis is designed according to supersaturated recrystallization (SR), which is operated at RT, within few seconds, free from inert gas and injection operation. Although formed at RT, IPQDs' PLs have QYs of 80%, 95%, 70%, and FWHMs of 35, 20, and 18 nm for red, green, and blue emissions. As to the origins, the observed 40 meV exciton binding energy, halogen self-passivation effect, and CsPbX3@X quantum-well band alignment are proposed to guarantee the excitons generation and high-rate radiative recombination at RT. Moreover, such superior optical merits endow them with promising potentials in lighting and displays, which are primarily demonstrated by the white light-emitting diodes with tunable color temperature and wide color gamut.

 

[8].  Hwang Y J, Li H Y, Courtright B A E, Subramaniyan S, Jenekhe S A.

Nonfullerene Polymer Solar Cells with 8.5% Efficiency Enabled by a New Highly Twisted Electron Acceptor Dimer[J]. Advanced Materials, 2016, 28(1): 124-+.

被引次数:71

[Abstract]Fullerene-free and processing additive-free 8.5% efficient polymer solar cells are achieved by using a new 3,4-ethylene-dioxythiophene- linked arylene diimide dimer with a 76 degrees twist angle. The devices combine high (78-83%) external quantum efficiency with high (0.91-0.95 V) photovoltages and thus have relatively low optical bandgap energy loss.

 

[9].  Zhang X Y, Lin H, Huang H, Reckmeier C, Zhang Y, Choy W C H, Rogach A L.

Enhancing the Brightness of Cesium Lead Halide Perovskite Nanocrystal Based Green Light-Emitting Devices through the Interface Engineering with Perfluorinated lonomer[J]. Nano Letters, 2016, 16(2): 1415-1420.

被引次数:70

[Abstract]High photoluminescence quantum yield, easily tuned emission colors, and high color purity of perovskite nanocrystals make this class of material attractive for light source or display applications. Here, green light-emitting devices (LEDs) were fabricated using inorganic cesium lead halide perovskite nanocrystals as emitters. By introducing a thin film of perfluorinated ionomer (PFI) sandwiched between the hole transporting layer and perovskite emissive layer, the device hole injection efficiency has been significantly enhanced. At the same time, PFI layer suppressed. charging of the perovskite nanocrystal emitters thus preserving their superior emissive properties, which led to the three-fold increase in peak brightness reaching 1377 cd m(-2). The full width at half-maximum of the symmetric emission peak with color coordinates of (0.09, 0.76) was 18 nm, the narrowest value among perovskite based green LEDs.

 

[10].       Deng D H, Novoselov K S, Fu Q, Zheng N F, Tian Z Q, Bao X H.

Catalysis with two-dimensional materials and their heterostructures[J]. Nature Nanotechnology, 2016, 11(3): 218-230.

被引次数:67

[Abstract]Graphene and other 2D atomic crystals are of considerable interest in catalysis because of their unique structural and electronic properties. Over the past decade, the materials have been used in a variety of reactions, including the oxygen reduction reaction, water splitting and CO2 activation, and have been shown to exhibit a range of catalytic mechanisms. Here, we review recent advances in the use of graphene and other 2D materials in catalytic applications, focusing in particular on the catalytic activity of heterogeneous systems such as van der Waals heterostructures (stacks of several 2D crystals). We discuss the advantages of these materials for catalysis and the different routes available to tune their electronic states and active sites. We also explore the future opportunities of these catalytic materials and the challenges they face in terms of both fundamental understanding and the development of industrial applications.

分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 146

2016年材料科学10大高被引论文

[1].  Zhao J B, Li Y K, Yang G F, Jiang K, Lin H R, Ade H, Ma W, Yan H.

Efficient organic solar cells processed from hydrocarbon solvents[J]. Nature Energy, 2016, 1.

被引次数:246

[Abstract]Organic solar cells have desirable properties, including low cost of materials, high-throughput roll-to-roll production, mechanical flexibility and light weight. However, all top-performance devices are at present processed using halogenated solvents, which are environmentally hazardous and would thus require expensive mitigation to contain the hazards. Attempts to process organic solar cells from non-halogenated solvents lead to inferior performance. Overcoming this hurdle, here we present a hydrocarbon-based processing system that is not only more environmentally friendly but also yields cells with power conversion efficiencies of up to 11.7%. Our processing system incorporates the synergistic effects of a hydrocarbon solvent, a novel additive, a suitable choice of polymer side chain, and strong temperature-dependent aggregation of the donor polymer. Our results not only demonstrate a method of producing active layers of organic solar cells in an environmentally friendly way, but also provide important scientific insights that will facilitate further improvement of the morphology and performance of organic solar cells.

 

[2].  Green M A, Emery K, Hishikawa Y, Warta W, Dunlop E D.

Solar cell efficiency tables (version 47)[J]. Progress In Photovoltaics, 2016, 24(1): 3-11.

被引次数:190

[Abstract]Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined, and new entries since July 2015 are reviewed. Copyright (C) 2015 John Wiley & Sons, Ltd.

 

[3].  You J B, Meng L, Song T B, Guo T F, Yang Y, Chang W H, Hong Z R, Chen H J, Zhou H P, Chen Q, Liu Y S, De Marco N, Yang Y.

Improved air stability of perovskite solar cells via solution-processed metal oxide transport layers[J]. Nature Nanotechnology, 2016, 11(1): 75-+.

被引次数:190

[Abstract]Lead halide perovskite solar cells have recently attracted tremendous attention because of their excellent photovoltaic efficiencies. However, the poor stability of both the perovskite material and the charge transport layers has so far prevented the fabrication of devices that can withstand sustained operation under normal conditions. Here, we report a solution-processed lead halide perovskite solar cell that has p-type NiOx and n-type ZnO nanoparticles as hole and electron transport layers, respectively, and shows improved stability against water and oxygen degradation when compared with devices with organic charge transport layers. Our cells have a p-i-n structure (glass/indium tin oxide/NiOx/perovskite/ZnO/Al), in which the ZnO layer isolates the perovskite and Al layers, thus preventing degradation. After 60 days storage in air at room temperature, our all-metal-oxide devices retain about 90% of their original efficiency, unlike control devices made with organic transport layers, which undergo a complete degradation after just 5 days. The initial power conversion efficiency of our devices is 14.6 +/- 1.5%, with an uncertified maximum value of 16.1%.

 

[4].  Zhao W C, Qian D P, Zhang S Q, Li S S, Inganas O, Gao F, Hou J H.

Fullerene-Free Polymer Solar Cells with over 11% Efficiency and Excellent Thermal Stability[J]. Advanced Materials, 2016, 28(23): 4734-4739.

被引次数:179

[Abstract]A nonfullerene-based polymer solar cell (PSC) that significantly outperforms fullerene-based PSCs with respect to the power-conversion efficiency is demonstrated for the first time. An efficiency of >11%, which is among the top values in the PSC field, and excellent thermal stability is obtained using PBDB-T and ITIC as donor and acceptor, respectively.

 

[5].  Xia B Y, Yan Y, Li N, Wu H B, Lou X W, Wang X.

A metal-organic framework-derived bifunctional oxygen electrocatalyst[J]. Nature Energy, 2016, 1.

被引次数:122

[Abstract]Oxygen electrocatalysis is of great importance for many energy storage and conversion technologies, including fuel cells, metal-air batteries and water electrolysis. Replacing noble metal-based electrocatalysts with highly efficient and inexpensive non-noble metal-based oxygen electrocatalysts is critical for the practical applications of these technologies. Here we report a general approach for the synthesis of hollow frameworks of nitrogen-doped carbon nanotubes derived from metal-organic frameworks, which exhibit higher electrocatalytic activity and stability for oxygen reduction and evolution than commercial Pt/C electrocatalysts. The remarkable electrochemical properties are mainly attributed to the synergistic effect from chemical compositions and the robust hollow structure composed of interconnected crystalline nitrogen-doped carbon nanotubes. The presented strategy for controlled design and synthesis of metal-organic framework-derived functional nanomaterials offers prospects in developing highly active electrocatalysts in electrochemical energy devices.

 

[6].  Wang J H, Cui W, Liu Q, Xing Z C, Asiri A M, Sun X P.

Recent Progress in Cobalt-Based Heterogeneous Catalysts for Electrochemical Water Splitting[J]. Advanced Materials, 2016, 28(2): 215-230.

被引次数:118

[Abstract]Water electrolysis is considered as the most promising technology for hydrogen production. Much research has been devoted to developing efficient electrocatalysts for hydrogen production via the hydrogen evolution reaction (HER) and oxygen production via the oxygen evolution reaction (OER). The optimum electrocatalysts can drive down the energy costs needed for water splitting via lowering the overpotential. A number of cobalt (Co)-based materials have been developed over past years as non-noble-metal heterogeneous electrocatalysts for HER and OER. Recent progress in this field is summarized here, especially highlighting several important bifunctional catalysts. Various approaches to improve or optimize the electrocatalysts are introduced. Finally, the current existing challenges and the future working directions for enhancing the performance of Co-implicated electrocatalysts are proposed.

 

[7].  Li H, Tsai C, Koh A L, Cai L L, Contryman A W, Fragapane A H, Zhao J H, Han H S, Manoharan H C, Abild-Pedersen F, Norskov J K, Zheng X L.

Activating and optimizing MoS2 basal planes for hydrogen evolution through the formation of strained sulphur vacancies[J]. Nature Materials, 2016, 15(1): 48-+.

被引次数:100

[Abstract]As a promising non-precious catalyst for the hydrogen evolution reaction (HER; refs 1-5), molybdenum disulphide (MoS2) is known to contain active edge sites and an inert basal plane(1,6-8). Activating the MoS2 basal plane could further enhance its HER activity but is not often a strategy for doing so. Herein, we report the first activation and optimization of the basal plane of monolayer 2H-MoS2 for HER by introducing sulphur (S) vacancies and strain. Our theoretical and experimental results show that the S-vacancies are new catalytic sites in the basal plane, where gap states around the Fermi level allow hydrogen to bind directly to exposed Mo atoms. The hydrogen adsorption free energy (Delta G(H)) can be further manipulated by straining the surface with S-vacancies, which fine-tunes the catalytic activity. Proper combinations of S-vacancy and strain yield the optimal Delta G(H) = 0 eV, which allows us to achieve the highest intrinsic HER activity among molybdenum-sulphide-based catalysts.

 

[8].  Jahani S, Jacob Z. All-dielectric metamaterials[J].

Nature Nanotechnology, 2016, 11(1): 23-36.

被引次数:97

[Abstract]The ideal material for nanophotonic applications will have a large refractive index at optical frequencies, respond to both the electric and magnetic fields of light, support large optical chirality and anisotropy, confine and guide light at the nanoscale, and be able to modify the phase and amplitude of incoming radiation in a fraction of a wavelength. Artificial electromagnetic media, or metamaterials, based on metallic or polar dielectric nanostructures can provide many of these properties by coupling light to free electrons (plasmons) or phonons (phonon polaritons), respectively, but at the inevitable cost of significant energy dissipation and reduced device efficiency. Recently, however, there has been a shift in the approach to nanophotonics. Low-loss electromagnetic responses covering all four quadrants of possible permittivities and permeabilities have been achieved using completely transparent and high-refractive-index dielectric building blocks. Moreover, an emerging class of all-dielectric metamaterials consisting of anisotropic crystals has been shown to support large refractive index contrast between orthogonal polarizations of light. These advances have revived the exciting prospect of integrating exotic electromagnetic effects in practical photonic devices, to achieve, for example, ultrathin and efficient optical elements, and realize the long-standing goal of subdiffraction confinement and guiding of light without metals. In this Review, we present a broad outline of the whole range of electromagnetic effects observed using all-dielectric metamaterials: high-refractive-index nanoresonators, metasurfaces, zero-index metamaterials and anisotropic metamaterials. Finally, we discuss current challenges and future goals for the field at the intersection with quantum, thermal and silicon photonics, as well as biomimetic metasurfaces.

 

[9].  Ariga K, Li J B, Fei J B, Ji Q M, Hill J P.

Nanoarchitectonics for Dynamic Functional Materials from Atomic-/Molecular-Level Manipulation to Macroscopic Action[J]. Advanced Materials, 2016, 28(6): 1251-1286.

被引次数:94

[Abstract]Objects in all dimensions are subject to translational dynamism and dynamic mutual interactions, and the ability to exert control over these events is one of the keys to the synthesis of functional materials. For the development of materials with truly dynamic functionalities, a paradigm shift from nanotechnology to nanoarchitectonics is proposed, with the aim of design and preparation of functional materials through dynamic harmonization of atomic-/molecular-level manipulation and control, chemical nanofabrication, self-organization, and field-controlled organization. Here, various examples of dynamic functional materials are presented from the atom/molecular-level to macroscopic dimensions. These systems, including atomic switches, molecular machines, molecular shuttles, motional crystals, metal-organic frameworks, layered assemblies, gels, supramolecular assemblies of biomaterials, DNA origami, hollow silica capsules, and mesoporous materials, are described according to their various dynamic functions, which include short-term plasticity, long-term potentiation, molecular manipulation, switchable catalysis, self-healing properties, supramolecular chirality, morphological control, drug storage and release, light-harvesting, mechanochemical transduction, molecular tuning molecular recognition, hand-operated nanotechnology.

 

[10].       Bennoun M, Houari M S A, Tounsi A. A novel five-variable refined plate theory for vibration analysis of functionally graded sandwich plates[J]. Mechanics Of Advanced Materials And Structures, 2016, 23(4): 423-431.

被引次数:79

[Abstract]In this article, a new five-variable refined plate theory for the free vibration analysis of functionally graded sandwich plates is developed. By dividing the transverse displacement into bending, shear, and thickness stretching parts, the number of unknowns and governing equations of the present theory is reduced, and hence, makes it simple to use. Indeed, the number of unknown functions involved in the Present theory is only five, as opposed to six or more in the case of other shear and normal deformation theories. The theory accounts for hyperbolic distribution of the transverse shear strains, and satisfies the zero traction boundary conditions on the surfaces of the plate without using a shear correction factor. Two common types of functionally graded material (FGM) sandwich plates, namely, the sandwich with FGM facesheet and homogeneous core and the sandwich with homogeneous facesheet and FGM core, are considered. The equations of motion are obtained using Hamilton's principle. Numerical results of the present theory are compared with three-dimensional elasticity solutions and other higher-order theories reported in the literature. It can be concluded that the proposed theory is accurate and efficient in predicting the free-vibration response of functionally graded sandwich plates. 

分类:材料学科热点 | 固定链接 | 评论: 2 | 引用: 0 | 查看次数: 237

《自然》评出2016年度重大科学事件

英国《自然》杂志网络版16日公布了其评出的2016年产生重大影响的科学事件,其中除了科学家首次探测到引力波的存在等重要科学发现外,中国在航天、气候变化以及基因技术领域取得的多项重要成果也被《自然》杂志认为产生了重大影响。

2016年较受瞩目的科学事件当属引力波。美国加州理工学院、麻省理工学院以及“激光干涉引力波天文台(LIGO)”的研究人员2月宣布,他们利用LIGO探测器在2015年9月14日探测到来自于两个黑洞合并的引力波信号,证明了爱因斯坦广义相对论预言中的引力波。

《自然》杂志指出,爱因斯坦发表广义相对论几乎100年后,科学家终于以让人惊叹的方式证实了它。这也给黑洞的存在提供了最直接的证据,而黑洞也曾被爱因斯坦的理论预言过。

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分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 235
12月10日,加州大学伯克利分校教授,美国科学院院士,顶级材料学家杨培东,用他的实验室研究和产业结合经验,细致地分享了纳米科技是如何走出实验室,改变人类世界的。

演讲者|杨培东(加州大学伯克利分校教授,美国科学院院士,顶级材料学家)

创新创业的根本在于有一个创新的基础科研。
今天我想跟大家分享的是,怎么把实验室中的分析研究,变成现实中能够看得见摸得着的东西。

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分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 241
为了满足社会对于电动车动力电池安全性、续航能力、充电时间等方面的需求,无论是在学术界还是工业界,锂离子电池关键材料的研究一直是具有挑战性的课题。当涉及到设计和构造锂离子电池电极材料的时候,纳米科技以其特殊的优势在提高电池能力密度、功率密度、安全性和稳定性等方面被人类所重视。鉴于上述现状,北京大学深圳研究生院新材料学院潘锋课题组与美国阿贡国家实验室动力电池实验室Amine博士课题组联合撰写了关于纳米科技在发展电动车动力电池材料的作用(The role of nanotechnology in the development of battery materials for electric vehicles)的综述与展望文章,该文章发表在2016年12月的《自然·纳米技术》【Nature Nanotechnology,DOI:10.1038/NNANO.2010.207(影响因子IF:35.267)】上。

2015年,北京大学深圳研究生院新材料学院联合美国多家国家实验室牵头组建“电动汽车动力电池与材料国际联合研究中心”(被正式认定为国家级的研究中心,科技部国科发外(2015)352号文),成为深圳自建市以来的首个国家级国际联合研究中心,其中北大的潘锋教授和美国阿贡国家实验室Amine博士(Distinguish Fellow)分别担任中心主任和国际联合研发的执行主任,目前北大新材料学院与阿贡实验室紧密合作聚焦电动车动力电池与关键材料的研发与创新,取得了一些重要的进展,在JACS、Adv. Energy Mater.、NanoEnergy等材料与能源的国际著名期刊上发表了十多篇文章。

这篇综述与展望涵盖了锂离子电池不同种类的正负极材料,包括已经商业化、接近商业化以及正在开发且具有商业使用前景的电极材料。正极材料方面,已经商业化的LiCoO2因其昂贵的成本和不稳定的结构受到限制,因此不是一种能够应用于电动汽车且可持续发展的材料。所以在正极材料方面,文章主要总结了已经商业化的磷酸铁锂、尖晶石锰酸锂和高镍过渡金属氧化物,并详细介绍了有关这三类材料的纳米技术。文章对负极材料也分三类进行了总结:可脱嵌材料(石墨、二氧化钛),合金与非合金材料(Sn-Si合金)和电化学转化材料(金属氧化物、金属硫化物等)。文章最后对非锂离子电池也进行了总结,包括Li-S电池、Li-O2电池等,并对未来电动车动力电池材料的发展进行了展望。
分类:材料学科热点 | 固定链接 | 评论: 0 | 引用: 0 | 查看次数: 285