SI NANOWIRE

这个子项目是许多研究子项目中的一个 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得主要资金， 因此可以在其他CRISP条目中表示。所列机构为 研究中心，而研究中心不一定是研究者所在的机构。 新材料的开发可以使科学和技术取得革命性而非进化性的进步。我们的团队致力于发现和开发新的纳米结构，重点是以原子精度控制不同长度尺度的形态，尺寸，结构，成分和掺杂，因为这些将定义并实现对物理特性的控制。特别强调开发可提供双重功能的调制纳米级导线  器件特性和互连  任何纳米系统都需要。 我们最近展示了一个概念的“nanotectonic”的合成方法的控制阐述的二维（2D）单晶超结构使用扭结半导体纳米线（我们的样品）的元素。我们定义并表征了一个单晶的“二级结构单元”，它可以作为纳米线系统中新型立体调制的基础。该单元由两个臂组成，每个臂具有连贯的生长方向和明确的尺寸，一个三角形关节和固定的120度桥接角。 我们想用3D断层扫描来表征我们的扭结纳米线。特别是，我们想知道在形成这种扭结的过程中晶体小面如何演变，以及不同位置的STEM横截面。你现在得到的样品是一种扭结纳米线的IPA溶液，你可以将纳米线存款在合适的TEM衬底上。

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.