基于空间分辨光谱技术的一维纳米材料光谱特性的表征与调控

项目名称： 基于空间分辨光谱技术的一维纳米材料光谱特性的表征与调控

项目编号： No.61308031

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 肖发俊

作者单位： 西北工业大学

项目金额： 28万元

中文摘要： 近年来，单根一维纳米材料光谱特性的表征和调控已成为纳米光子学研究的热点,其研究成果丰富了人们对一维量子受限体系的认识，促进了物理学新规律的发现，也为制备高性能纳米光电子器件奠定了坚实基础。本项目旨在研究单根一维纳米材料（包括碳纳米管、半导体纳米线）的吸收和瑞利散射光谱特性，揭示激发态下多体相互作用的规律，探索调控一维纳米材料光谱特性的新手段。具体包括：①开发新型高灵敏度的空间分辨吸收和瑞利散射光谱探测系统，以此获取隐藏在非均匀加宽机制下一维纳米材料的特征谱线，并定量地得到材料的吸收与散射截面；②掌握半导体纳米线中多体相互作用的直径依赖规律，建立K点附近碳纳米管的色散关系，探索其带隙重整化效应对手性结构的依赖规律；③探索空间结构光场的光子态与一维纳米材料的电子态的耦合规律，揭示一维纳米材料与石墨烯等材料的相互作用机制，并提出利用空间结构光场、石墨烯调控一维纳米材料光谱性质的新方法。

中文关键词： 空间结构光场；一维纳米材料；金属纳米结构；；

英文摘要： Recently, characterizing and tailoring the optical response of one-dimensional (1D) materials have attracted substantial research interest within the field of nanophotonics. The research results on this topic help us gain a much deeper understanding of 1D quantum confined systems, contributed to the foundation of new physical laws, and paved a solid way to fabricate the novel photoelectronic nanodevices. In this project, we study the intrinsic absorption and Rayleigh scattering properties of individual 1D nanomaterials (including carbon nanotubes and semiconductor nanowires), revealed the mechanisms of many body interactions at excitation sate, and further explore new methods to tune the optical response of 1D nanomaterials. The main contents of this project are as followed: ① The intrinsic optical properties of 1D nanomaterials, which are usually hidden by heterogeneous broadening in ensemble measurements, are characterized by self-designed high sensitivity spatially resolved absorption/Rayleigh scattering spectrometer, and the absorption/Rayleigh scattering cross-sections of the 1D nanomaterials are also quantitatively measured. ② The diameter-dependent man body interaction in semiconductor nanowire are explored, and the energy dispersion relation along with the bandgap renormalization near K point in carbon n

英文关键词： spatial structured light；one-dimensional nanomaterials；metallic nanostructures；；