SGER: Exploratory Research: Integration of Multiscale Nanowire Devices and their Thermoelectrical Characterization

SGER：探索性研究：多尺度纳米线器件的集成及其热电特性

• 批准号: 0841265
• 负责人: Tae-Youl Choi
• 金额: --
• 依托单位: University of North Texas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2010-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0841265&HistoricalAwards=false
• 关键词: SGER; Exploratory; Research; Integration; Multiscale

The main goal of this project is to realize the fabrication of multiscale electric devices based on conducting nanowires and their characterization by using nanomanufacturing principles such as self-assembly, dielectrophoresis, and focused ion beam nanolithography. The objectives include the following tasks:(a) hierarchical integration of nanowires into multiscale electric devices, and(b) characterization of individual nanowires in terms of Seebeck coefficient and thermal conductivity.The self-assembly technique and dielectrophoresis will be combined to control individual nanowires and attract them into desired pairs of microelectrodes. Fountain pen-based metal nanoink soldering or electron-beam metal deposition techniques will be adapted to enhance the conductivity between metal electrodes and nanowires. Focused ion beam will be used to define a nanostructure such as nanoheater/nanothermometer for aiding the characterization of individual nanowires. The importance of the of the proposed work lies in the fact that the investigation of thermal and electric properties of nanowires will provide a fundamental database for thermoelectric devices, which in turn contributes to developing alternative energy sources. The proposed integration method will provide a practical means for nanomanufacturing massive and multiscale nanowire-based thermoelectric devices. The proposed work yields significant information on the Seebeck and Peltier coefficients of one-dimensional nanostructures. The research outcomes of nanomanufacturing and properties of nanomaterials investigated in the project will contribute to establishing a new research and education program in the recently established Mechanical and Energy Engineering Department at the University of North Texas. A systematic effort will be made to recruit minorities to this research project through the Texas Academy of Mathematics and Science program. Talented undergraduate students with a high degree of financial need in this program are ensured of success as they are engaged in the various research experiences proposed herein.

该项目的主要目标是利用自组装、介电电泳和聚焦离子束纳米光刻等纳米制造原理，实现基于导电纳米线的多尺度电子器件的制造及其表征。目标包括以下任务：（a）将纳米线分层集成到多尺度电子器件中，以及（b）在塞贝克系数和导热系数方面表征单个纳米线。自组装技术和介电泳将结合起来控制单个纳米线并将它们吸引到所需的微电极对中。基于钢笔的金属纳米墨水焊接或电子束金属沉积技术将用于增强金属电极和纳米线之间的导电性。聚焦离子束将用于定义纳米结构，例如纳米加热器/纳米温度计，以帮助表征单个纳米线。这项工作的重要性在于，对纳米线热性能和电性能的研究将为热电器件提供基础数据库，从而有助于开发替代能源。所提出的集成方法将为大规模和多尺度纳米线热电器件的纳米制造提供实用手段。所提出的工作提供了有关一维纳米结构的塞贝克和珀尔帖系数的重要信息。该项目研究的纳米制造和纳米材料特性的研究成果将有助于在北德克萨斯大学最近成立的机械与能源工程系建立新的研究和教育项目。将通过德克萨斯州数学与科学学院计划系统地努力招募少数族裔参与该研究项目。该项目中具有高度经济需求的才华横溢的本科生将获得成功，因为他们参与了本文提出的各种研究经验。