Stressed-Induced Nanopatterning of Surface Reactions on Metal Oxide Surfaces

金属氧化物表面表面反应的应力诱导纳米图案化

• 批准号: 1206768
• 负责人: Richard Osgood
• 金额: $ 39万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-06-01 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1206768&HistoricalAwards=false
• 关键词: Stressed; Induced; Nanopatterning; Surface; Reactions

Technical Description: This project examines the use of controllable nanoscale local strain to chemically pattern metal-oxide-crystal surfaces. It investigates and exploits local stress formed by careful, low-energy surface implantation of rare gases to controllably vary surface reactivity. Thus a high-resolution nanoscale template of nanometer-scale buried-atom clusters creates the needed patterned strain in the surface layers of metal oxides. Strain-induced reactions or change in surface reactivity is observed in several systems of interest to the materials chemistry of electronic materials or even more generally, for use in oxides for catalysis. While the main focus of the research project examines the use of this effect as a method of nanoscale chemical patterning on the oxide surface, the project has the broader implication of enhancing our knowledge of oxide, nanoscale surface chemistry and its control.Non-technical Description: This project is in the general areas of nanopatterning and complex-oxide surface chemical reactions; this is an area of broad impact for many technologies including surface functionalization for advanced sensors in medical and biological science, and patterning for nanosystem devices. The research is integrated into the education mission of Columbia University. First, the project enables initiation of a new hands-on early graduate student program: entitled Jump-Start; this program provides an opportunity to learn via mentoring, material preparation, and teaching the advanced techniques need for modern experimental research in oxide materials. Second, the project has concrete plans and procedures to seek out recruitment of diverse students. Recruitment is done via outreach talks to undergrads at Columbia and via active participation in the undergraduate research opportunities program (UROP) at Columbia. Third, the project enables students to collaborate, via extended visits and shorter trips, with a major US and an Italian national laboratory, i.e. the new Brookhaven Center for Functional Nanomaterials and the ELETTRA synchrotron source in Trieste.

技术描述：该项目研究了使用可控纳米级局部应变来化学模式金属氧化物晶体表面。它研究和利用局部应力形成小心，低能量的表面注入稀有气体，以可控地改变表面反应性。因此，纳米级埋原子团簇的高分辨率纳米级模板可以在金属氧化物的表层产生所需的图案化应变。应变引起的反应或表面反应性的变化在几个系统中被观察到，这些系统对电子材料的材料化学感兴趣，甚至更广泛地用于催化氧化物。虽然该研究项目的主要重点是研究利用这种效应作为氧化物表面纳米级化学图案的方法，但该项目具有更广泛的含义，即增强我们对氧化物、纳米级表面化学及其控制的认识。非技术描述：该项目是在纳米图案和复杂的氧化物表面化学反应的一般领域；这是一个对许多技术产生广泛影响的领域，包括医学和生物科学中先进传感器的表面功能化，以及纳米系统设备的图案。该研究被纳入哥伦比亚大学的教育使命。首先，该项目启动了一个新的动手早期研究生项目：名为“start - start”；该计划提供了一个机会，通过指导，材料准备和教授现代氧化材料实验研究所需的先进技术来学习。其次，该项目有具体的计划和程序，以寻求多元化的学生招募。招聘是通过与哥伦比亚大学的本科生进行外展谈话和积极参与哥伦比亚大学的本科生研究机会计划（UROP）来完成的。第三，通过长期访问和短途旅行，该项目使学生能够与美国和意大利的主要国家实验室合作，即新的布鲁克海文功能纳米材料中心和的里雅斯特的ELETTRA同步加速器源。