Acquisition of and Student Training for Low Temperature STM for Analysis/Fabrication of Single Site Defects

这笔拨款用于购买一台低温扫描隧道显微镜（STM），该显微镜将用于调查电子和传感器材料中的缺陷和键合位置。低温STM提供了一个零漂移的环境，在这个环境中孤立的分子不会扩散。在这种安静、固定的环境中，可以使用电流-电压（dI/dV）测量来确定单个缺陷或键合位点的局部电子结构。该仪器将研究的具体系统包括：(a)半导体/栅极氧化物界面处的缺陷；(b)聚硅氧烷基纳米线传感器；(c)卤素与铝的反应；(d)混合、不对称金属酞菁化学传感器；(e)单大分子组装有序阵列的制备。随着用于计算表面分子电子结构的商业软件（VASP）的出现，低温STM和STS研究可以直接与模拟STM图像和单个原子上的态的部分密度进行比较。这种比较提供了对表面电子结构控制的关键见解。这个乐器将对大学里的广大听众产生影响。(a)圣地亚哥研究生奖学金项目：加州大学圣地亚哥分校将为4名研究生提供3个月的资助。这些奖学金将用于支持研究生增加化学和物理研究生课程的多样性。(b)本科生研究：本科生将通过霍华德休斯本科生充实计划（HHUEP）和加州大学圣地亚哥分校学术充实办公室参与拟议的研究。(c) UCSD-TV和网络广播：UCSD-TV教育外展项目将录制适合高中生和大学生的讲座，并进行广播和网络广播。(d)教师培训：这笔资金每年夏天资助一名高中科学教师到加州大学圣地亚哥分校的一个研究实验室工作。教师将有机会学习如何使用由加州大学圣地亚哥分校国家显微镜与成像研究中心（NCMIR）开发的遥测系统。NCMIR设施中有一台电子显微镜，可以通过网络远程控制，使教师和学生可以直接在教室里使用电子显微镜。(e)工业合作：低温STM将用于侧重于设备和传感器开发的合作研究项目，涉及摩托罗拉、Microsense和IBM。

This grant supports the purchase of a low temperature scanning tunneling microscope (STM) that will be used for investigations of defects and bonding sites in electronic and sensor materials. The low temperature STM provides a zero drift environment in which isolated molecules do not diffuse. In this quiet, stationary environment, the local electronic structure of single defects or bonding sites can be determined using current-voltage (dI/dV) measurements. The specific systems that will be studied with this instrument include: (a) defects at the semiconductor/gate oxide interface; (b) polysilole-based nanowire sensors; (c) halogen reactions with aluminum; (d) mixed, asymmetric metal phthalocyanine-based chemical sensors; and (e) fabrication of ordered arrays of single macromolecular assemblies. With the advent of commercial software (VASP) for calculating the electronic structures of molecules on surfaces, low temperature STM and STS studies can be directly compared to both simulated STM images and the partial density of states on single atoms. This comparison provides critical insights into the control of electronic structure on surfaces. This instrument will have impact on a broad audience at the university. (a) The San Diego Fellowship program for entering graduate students: UCSD is donating 3 months of support for 4 entering graduate students. These fellowships will be used to support graduate students to increase the diversity of the chemistry and physics graduate programs. (b) Undergraduate research: Undergraduate students will be involved in the proposed research via the Howard Hughes Undergraduate Enrichment Program (HHUEP) and the UCSD Office of Academic Enrichment. (c) UCSD-TV and webcasts: Lectures that are appropriate for high school and college students will be recorded for both broadcast and webcast by the UCSD-TV education outreach program. (d) Teacher training: The funds support one high school science teacher per summer to work in a research laboratory at UCSD. The teacher will have the opportunity to learn how to use the telemetry system developed at the UCSD National Center for Microscopy and Imaging Research (NCMIR). The NCMIR facilities house an electron microscope that can be remotely controlled via the web, enabling teachers and students to use the SEM directly from their classrooms. (e) Industrial collaborations: The low temperature STM will be used in collaborative research projects that focus on device and sensor development and involve Motorola, Microsense, and IBM.