Solution-grown Nanowire and Nanotube Arrays, and Ordered Hybrid Nanoarchitectures incorporating them

溶液生长的纳米线和纳米管阵列，以及包含它们的有序混合纳米结构

• 批准号: RGPIN-2015-06630
• 负责人: Shankar, Karthik
• 金额: $ 2.55万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=686032
• 关键词: Solution; grown; Nanowire; Nanotube; Arrays

Research in nanotechnology is moving from studying the unique properties of relatively isolated nanomaterial components to generating and studying nano-systems and nano-architectures with unique and in some cases counter-intuitive properties (e.g. negative index metamaterials). While the previous generation of components such as colloidal quantum dots and metal nanoparticles performed spectacularly in biomedical diagnostics and sensing more generally, the present generation of nano-architectures has the potential to meaningfully impact the global energy and emissions problems through the design of improved photovoltaics, thermophotovoltaics and catalysts. Such nano-architectures are most powerful when they combine two or more of the following components in an ordered fashion preferably with deterministic spatial organization: semiconductors, low-loss metals and pi-conjugated organic molecules. Towards this end, the Shankar group will use its expertise in one-dimensional (1-D) semiconducting nanomaterials and also build upon its strong track record in using 1-D nanomaterials in the active layer of devices such as photovoltaics, photocatalysts, thin film transistors and biosensors. ***1-D nanotube/nanopore/nanorod arrays will be used as a building block to synthesize artificially structured nanomaterials of greater complexity and enhanced optoelectronic functionality. The interaction of plasmonic, electronic and excitonic effects in such structures is phenomenologically rich and is only recently receiving the attention that it deserves. Such ordered hybrid nanoarchitectures that intelligently combine the above three components offer the tools to achieve the desired control over the activities of photons and electrons, be it through the improvement in absorption, manipulation of the optical absorption and luminescence, and enhancement of charge separation & charge transport. We further propose to study 1-D nanomaterials and hybrid nanoarchitectures containing them using a powerful suite of spectroscopic and transient techniques to probe their optoelectronic properties. The scientific goal of these studies is to gain a deeper understanding of the properties while the technological goal is to understand and overcome performance bottlenecks, and bridge the gap between material structure and device performance.****We shall continue efforts in advancing isolated nanomaterial components. We propose to do this by extending the frontiers of anodic synthesis of aligned nanotube/nanorod arrays to new classes of semiconductors and by unlocking the full potential of magnetic fields in electrochemical anodization.****Optoelectronic and photonic devices that involve the transport, dispersion and interconversion of light and charge, form the final goals of this research. Such devices are key to both the alternative energy and information technology industries.**

纳米技术的研究正在从研究相对孤立的纳米材料成分的独特特性转变为具有独特的纳米系统和纳米系统和纳米构造，在某些情况下具有相反的特性（例如，负指数质量材料）。 虽然上一代的成分，例如胶体量子点和金属纳米颗粒，在生物医学诊断中表现出色并更一般地传感，但现代的纳米构造物具有有意义地影响全球能量和排放问题，通过改善的光伏，热燃料，热燃料，热燃料，蛋白质和排放问题。当这种纳米构造以有序的方式与确定性空间组织结合以下两个或多个组件时，它们最强大：半导体，低损坏金属和PI偶联的有机分子。 为此，Shankar组将在一维（1-D）半导体纳米材料中使用其专业知识，并以其强大的往绩来基于在使用1-D纳米材料（如光伏电动机，光催化剂，光催化剂，薄膜透镜和生物传感器）中使用1-D纳米材料。 *** 1-D纳米管/纳米孔/纳米棒阵列将用作构建块，以合成具有更大复杂性和增强光电功能的人为结构的纳米材料。等离激子，电子和激子在这种结构中的相互作用在现象学上很富含，直到最近才受到应有的关注。这种有序的混合纳米结构智能地结合了上述三个组件，提供了实现对光子和电子活性的所需控制的工具，无论是通过改善吸收，光学吸收和发光的操纵，以及增强电荷分离和电荷运输的增强。 我们进一步建议使用功能强大的光谱和瞬态技术来研究包含它们的1-D纳米材料和杂化纳米结构，以探测其光电特性。这些研究的科学目标是对这些属性有更深入的了解，而技术目标是了解和克服性能瓶颈，并弥合物质结构和设备性能之间的差距。 我们建议通过扩大对齐纳米管/纳米棒阵列的阳极合成的边界来实现新的半导体，并解锁电化学阳极氧化中磁场的全部潜力。 这些设备既是替代能源和信息技术行业的关键。**