Thermophysical properties of titania nanowires: novel characterization toward high-degree property and structure manipulation in manufacturing

二氧化钛纳米线的热物理性质：制造中高程度性质和结构操纵的新表征

• 批准号: 0931290
• 负责人: Xinwei Wang
• 金额: $ 26.6万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0931290&HistoricalAwards=false
• 关键词: Thermophysical; properties; titania; nanowires; novel

0931290WangThis award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Titanium dioxide and other ceramic nanostructures have broad application in various sensing, energy conversion, and biomedical device applications. In this research, an experimental technique will be developed to measure important thermal properties of ceramic nanowires. Relationships between the processing parameters used to synthesize the wires, and the nanowire properties will be developed. Intellectual Merit. Ceramic nanowires will be fabricated using a sol-gel-electrospinning technique. A laser-assisted, non-contact approach will be developed to measure the porosity, thermal conductivity and specific heat of single ceramic nanowires. Specifically, the nanowires will be irradiated using a modulated laser source, and the time-varying electrical resistivity of a very thin metallic coating applied to the nanowire will be measured. The thermal response of the nanowire will be inferred from the electrical resistivity information. Using a thermal analysis, the porosity, specific heat, and thermal conductivity of the nanowire will be determined. Broader Impacts. The results of the research will be integrated into existing and new courses at Iowa State University. Undergraduate participation in summer research will be facilitated through the PERUSE program at ISU. Outreach to K12 students is included, and will involve supervision of independent study projects by top students from local high schools.

0931290wangthis Award是根据2009年的《美国回收与再投资法》（公法111-5）资助的。二氧化物和其他陶瓷纳米结构在各种感应，能量转换和生物医学设备应用中都有广泛的应用。在这项研究中，将开发一种实验技术来测量陶瓷纳米线的重要热性质。将开发用于合成电线的处理参数与纳米线属性之间的关系。智力优点。陶瓷纳米线将使用Sol-Gel-电纺技术制造。将开发一种激光辅助的非接触方法，以测量单陶瓷纳米线的孔隙率，导热率和比热。具体而言，将使用调制激光源对纳米线进行照射，并测量施加到纳米线的非常薄的金属涂层的时变电阻率。纳米线的热响应将从电阻率信息中推断出来。使用热分析，将确定纳米线的孔隙率，比热和热导率。更广泛的影响。该研究的结果将纳入爱荷华州立大学的现有课程和新课程。 ISU的Peruse计划将促进本科参与夏季研究的参与。包括与K12学生的宣传，并将涉及当地高中顶级学生对独立学习项目的监督。