The study of optoelectronics and photonics in nanocomposite and nanostructured materials

纳米复合材料和纳米结构材料中的光电子学和光子学研究

• 批准号: 9042-2013
• 负责人: Singh, Mahi
• 金额: $ 1.31万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=521218
• 关键词: study; optoelectronics; photonics; nanocomposite; nanostructured

The aim of the proposed research program is to study light-matter interactions in nano-scale composite (nanocomposite) materials which are fabricated by combining two or more semiconductor, metallic, or biological nanostructures. By using various combinations of these nanostructures one can create enormous numbers of nanocomposite materials. These materials have important applications in chemical and biological sensing and optical communications and information processing. When one or more external electromagnetic fields are applied to a nanocomposite system, the constituent nanostructures become optically excited. The optical excitations in semiconductor and biological nanostructures are electron-hole pairs (excitons), while excitations in metallic nanostructures are collective oscillations of electrons (plasmons). The interaction of light with a nanocomposite system can be controlled by the shape, size and relative positions of the constituent nanostructures. Due to strong light-matter interactions, nanocomposites also hold great promise for controlling nonlinear optical properites as well as energy transfer and storage between nanostructures. Therefore, these materials are an ideal platform for fundamental research on light-matter interactions and physics at the interface of classical electrodynamics and quantum mechanics. The practical applications and basic science of nanocomposites will be studied through theoretical design, modeling, and simulations. Our group has already established productive international collaborations with experimental and theoretical research groups to synthesize and analyze functional nanocomposite materials, and we will continue our collaborative research efforts. It is expected that this research will provide a basic physical understanding and development of new types of nano-devices including optical sensors, light emitters, and optical switches. Research on nanocomposites also has many applications in nanoscale energy transport and solar energy trapping and harvesting.

拟议的研究计划的目的是研究纳米级复合材料（纳米复合材料）中的光-物质相互作用，这些材料是通过结合两个或多个半导体，金属或生物纳米结构制造的。通过使用这些纳米结构的各种组合，可以产生大量的纳米复合材料。这些材料在化学和生物传感以及光通信和信息处理方面具有重要的应用。当一个或多个外部电磁场施加到纳米复合材料系统时，组成纳米结构变得光学激发。半导体和生物纳米结构中的光激发是电子-空穴对（激子），而金属纳米结构中的激发是电子的集体振荡（等离子体激元）。光与纳米复合体系的相互作用可以通过组成纳米结构的形状、尺寸和相对位置来控制。由于强的光-物质相互作用，纳米复合材料在控制非线性光学性质以及纳米结构之间的能量传递和存储方面也有很大的希望。因此，这些材料是在经典电动力学和量子力学界面上进行光-物质相互作用和物理学基础研究的理想平台。纳米复合材料的实际应用和基础科学将通过理论设计，建模和模拟进行研究。我们的团队已经与实验和理论研究小组建立了富有成效的国际合作，以合成和分析功能性纳米复合材料，我们将继续我们的合作研究工作。预计这项研究将提供一个基本的物理理解和发展的新型纳米器件，包括光学传感器，光发射器和光开关。纳米复合材料的研究在纳米级能量传输和太阳能捕获和收集方面也有许多应用。