Investigating self assembly techniques to fabricate arrays of nanoparticle and nanowires and their applications in sensing and photonic devices

研究制造纳米颗粒和纳米线阵列的自组装技术及其在传感和光子器件中的应用

• 批准号: 249770-2006
• 负责人: Kahrizi, Mojtaba
• 金额: $ 2.04万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=394488
• 关键词: Investigating; self; assembly; techniques; fabricate

In this proposal we focus our research activities on the following two projects: a) Fabrication of arrays of nanoparticles and study of surface plasmon materials. The colloidal crystals are the simplest photonic crystals to show band-gaps for propagation of electromagnetic radiation in a particular direction. Porous metallic films have interesting optical properties and have applications principally as photonic materials in many industries like communication systems. In this project, the theory of surface plasmon for various quantum dots array configurations will be also studied. The acquired knowledge from the results of these fundamental studies will be used to fabricate large photonic surfaces. b) Field Effect Gas Sensor based on Nanowire Arrays.  Gas sensor technology plays a major role to improve security of the nation, the environmental health and safety. In this proposal we introduce and fabricate a novel miniaturized solid-state non-chemical gas sensor built around vertically aligned nanowire arrays. The structure is intended to offer enhanced selectivity, sensitivity and speed of response compared to others sensors. Our device, works by fingerprinting the ionization characteristic of the unknown gas.  In this proposal the following two objectives are investigated. I) Theoretical and experimental researches on fundamental issues related to array configuration of dielectric and metallic nanoparticles. The tasks to be studied are: a) Issues related to synthesis of self-assembled nanoparticles, materials, size, shape, and their uniformity. b) Investigation on linearity of array configuration of the nanoparticles and their application to fabricate photonic crystals. II) Investigation on design and fabrication of gas sensor based on nanowires. The tasks to be studied are: a) Techniques to fabrication of nanowires, including the possibilities of using anisotropic etching of silicon to fabricate these structures, and characterization of the fabricated nanowires. b) Applying acquired knowledge to fabricate the final gas sensor device, design, modeling, and fabrication.

在这个计划中，我们的研究活动集中在以下两个项目：a）纳米颗粒阵列的制造和表面等离子体材料的研究。胶体晶体是最简单的光子晶体，显示出在特定方向上传播电磁辐射的带隙。多孔金属薄膜具有独特的光学性质，主要作为光子材料应用于通信等领域。本计画亦将研究不同量子点阵列组态的表面电浆子理论。从这些基础研究结果中获得的知识将用于制造大型光子表面。B）基于纳米线阵列的场效应气体传感器。气体传感器技术在提高国家安全、环境健康和安全方面发挥着重要作用。在这个提议中，我们介绍并制造了一种新型的小型化固态非化学气体传感器周围垂直排列的纳米线阵列。与其他传感器相比，该结构旨在提供增强的选择性，灵敏度和响应速度。我们的装置，通过指纹识别未知气体的电离特性来工作。在这个提议中，研究了以下两个目标。一、介电纳米粒子和金属纳米粒子阵列结构的理论和实验研究。要研究的任务是：a）与自组装纳米颗粒的合成，材料，尺寸，形状及其均匀性有关的问题。B）纳米粒子阵列结构的线性度研究及其在光子晶体制备中的应用。（二）纳米线气敏传感器的设计与制作研究。要研究的任务是：a）纳米线的制造技术，包括使用硅的各向异性蚀刻来制造这些结构的可能性，以及所制造的纳米线的表征。B）应用所获得的知识来制造最终的气体传感器装置、设计、建模和制造。