CAREER: Nanoporous Ionic Diodes and Ionic Transistors

职业：纳米多孔离子二极管和离子晶体管

• 批准号: 0747237
• 负责人: Zuzanna Siwy
• 金额: $ 34.5万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-02-01 至 2014-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0747237&HistoricalAwards=false
• 关键词: CAREER; Nanoporous; Ionic; Diodes; Transistors

Prof. Siwy and her group at the University of California, Irvine will study single nanopores therefore 'holes' whose diameter is 100,000 smaller than the thickness of a human hair. With the support of the Analytical and Surface Chemistry Program in the Chemistry Division of the National Science Foundation, Prof. Siwy and coworkers are addressing questions to understand the transport of ions and charged molecules through nanopores whose geometry and surface characteristics will be fully controlled. Transport properties of nanopores differ greatly from those of micrometer-sized pores. It is because the increased surface to volume ratio causes ions and molecules passing through the nanopore to be strongly influenced by the properties of the pore walls. The researchers will examine interactions of transported ions with the pore walls and study the relation between structure of nanopores and their transport properties. New methods will be developed to pattern surface charge of nanopores so that a maximum control of ionic transport is achieved. Success of this project will lead to the development of new and improved devices that would be applicable in biosensing, lab-on-a-chip, and nanofluidic systems. The project will help us to understand interactions of ions and charged molecules with surfaces in nanopores. These nanopores have a volume domain that is below femto-liters. The research of Prof. Siwy will provide interdisciplinary training opportunities for graduate and undergraduate students in surface chemistry, nanofabrication, biophysics and biotechnology. The education program of this Career Award is focused on organizing visits of middle and high school students to UC Irvine combined with research experience in nanotechnology. The outreach activities for high schools will be done in collaboration with the UCI School Partnership in Research and Information Technology (SPIRIT) program.

加州大学欧文分校的Siwy教授和她的团队将研究单个纳米孔，因此这些孔的直径比人类头发的厚度小10万。在国家科学基金会化学部分析和表面化学计划的支持下，Siwy教授和他的同事们正在研究一些问题，以了解离子和带电分子通过纳米孔的传输，纳米孔的几何形状和表面特征将得到完全控制。纳米孔的传输特性与微米孔的传输特性有很大的不同。这是因为表面体积比的增加导致通过纳米孔的离子和分子受到孔壁性质的强烈影响。研究人员将研究传输的离子与孔壁的相互作用，并研究纳米孔结构与其传输特性之间的关系。将开发新的方法来对纳米孔的表面电荷进行图案化，从而实现对离子传输的最大控制。该项目的成功将导致新的和改进的设备的开发，这些设备将适用于生物传感、芯片实验室和纳米流体系统。该项目将帮助我们了解离子和带电分子与纳米孔中表面的相互作用。这些纳米孔的体积域低于毫微升。西维教授的研究将为研究生和本科生提供表面化学、纳米制造、生物物理学和生物技术方面的跨学科培训机会。这一职业奖的教育项目重点是组织初中生访问加州大学欧文分校，并结合纳米技术的研究经验。高中的外展活动将与UCI学校研究和信息技术伙伴关系(SPIRIT)计划合作进行。