SI NANOWIRE

硅纳米线

基本信息

批准号：
8168599
负责人：
CHARLES M LIEBER
金额：
$ 0.65万
依托单位：
BAYLOR COLLEGE OF MEDICINE
依托单位国家：
美国
项目类别：
财政年份：
2010
资助国家：
美国
起止时间：
2010-01-15 至 2010-12-31
项目状态：
已结题

项目摘要

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. The development of new materials can enable revolutionary versus evolutionary advances in science and technology. Our group is committed to the discovery and development of new nanoscale structures with an emphasis on controlling at different length scales with atomic precision the morphology, size, structure, composition and doping, since these will define and enable control over physical properties. Particular emphasis is being placed on developing modulated nanoscale wires, which provide dual functionality a device property and an interconnection required in any nanosystem. We recently demonstrated elements of a conceptual 'nanotectonic' synthesis approach for controlled elaboration of a two dimensional (2D) single crystalline superstructure using kinked semiconductor nanowires (our sample). We define and characterize a single crystalline 'secondary building unit' which serves as the basis of the novel stereo-modulation in nanowire systems. This unit consists of two arms, each with coherent growth direction and well defined size, one triangular joint, and a fixed 120 degree bridging angle. We want to characterize our kinked nanowire using 3D tomography. In particular, we want to know how the crystal facets evolve during the formation of such kinks, and the STEM cross-sections at different positions. The sample you have now is a IPA solution of kinked nanowires, and you can deposit the nanowires on appropriate TEM substrates.

该副本是利用众多研究子项目之一由NIH/NCRR资助的中心赠款提供的资源。子弹和调查员（PI）可能已经从其他NIH来源获得了主要资金，因此可以在其他清晰的条目中代表。列出的机构是对于中心，这不一定是调查员的机构。新材料的开发可以使革命性与科学技术的进化发展能够实现。我们的小组致力于发现和开发新的纳米级结构，重点是用原子精度以不同的长度控制形态，大小，结构，组成和掺杂，因为这些将定义并能够控制物理特性。特别强调开发调制的纳米级线，这些纳米级线提供了双功能设备属性和任何纳米系统中所需的互连。最近，我们展示了使用扭结的半导体纳米线（我们的样本）控制二维（2D）单晶超结构的概念“纳米型”合成方法的元素。我们定义并表征了单个晶体“二级建筑单元”，该单元是纳米线系统中新型立体调制的基础。该单元由两个臂组成，每个臂都有一个连贯的生长方向和明确的尺寸，一个三角形接头和一个固定的120度桥接角。我们想使用3D断层扫描来表征我们的纳米线。特别是，我们想知道在形成此类扭结期间的晶体方面如何演变，以及不同位置的茎横截面。您现在拥有的样品是串联纳米线的IPA解决方案，您可以将纳米线沉积在适当的TEM基板上。