CAREER: Electrochemical Nanofabrication - Transformative Concept towards Synthesis of Novel Materials, Functional Surfaces and Metallic Nanostructures

职业：电化学纳米制造——新型材料、功能表面和金属纳米结构合成的变革概念

• 批准号: 0955922
• 负责人: Stanko Brankovic
• 金额: $ 53.12万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-06-15 至 2016-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0955922&HistoricalAwards=false
• 关键词: CAREER; Electrochemical; Nanofabrication; Transformative; Concept

This project is supported by the Chemical Structure, Dynamics and Mechanisms Program of the Division of Chemistry and the Metals and Metallic Nanostructures Program of the Division of Materials Research. Professor Stanko Brankovic and his research group at the University of Houston will investigate the governing thermodynamics and kinetics processes controlling the morphology of the metal nanodeposit obtained via surface limited galvanic displacement reaction. In this novel deposition method, a single monolayer of less noble metal is oxidized-displaced by more noble metal cations which are simultaneously reduced-deposited on a substrate surface. The obtained metallic deposit has just a single atom in thickness as nanoclusters uniformly distributed over the substrate surface. Such nanodeposit will be used as model system to study structure-property relation of catalyst monolayers, their stability in different chemical reactions and their self-organization. In addition, a nanoscale three dimensional metallic structures produced by this method or by dealloying will be evaluated as a potential path for the fabrication of more complex nanostructures, including those that can be used for ultrasound sensing application.The fundamental concepts that will be developed in this work will have an impact in many other scientific and technological disciplines. Perhaps the most immediate one is the application to microelectronics fabrication, where precise, uniform deposition (i.e., "conformal deposition") on complex substrates remains a daunting challenge. Self-organized 2D metallic architectures, design of active catalyst monolayers or organized growth of carbon nanotubes are some other examples. This program integrates an educational component which spans over the range from high school to graduate students, and addresses the development of cutting edge research in the physical sciences, with an over-reaching theme of long term sustainable technology development. The long term goal of this program is to produce the highly qualified scientist and engineers able to carry out the technical challenges of the modern world.

本项目得到了化学系的化学结构、动力学和机理计划和材料研究部的金属和金属纳米结构计划的资助。休斯顿大学的斯坦科·布兰科维奇教授和他的研究小组将研究控制通过表面有限电偶置换反应获得的金属纳米镀层形貌的热力学和动力学过程。在这种新的沉积方法中，较少贵金属的单层被氧化-置换为更多的贵金属阳离子，这些阳离子同时还原-沉积在衬底表面。得到的金属沉积层只有一个原子的厚度，因为纳米团簇均匀地分布在衬底表面。这种纳米沉积将被用作模型系统来研究催化剂单分子膜的结构-性质关系、它们在不同化学反应中的稳定性以及它们的自组织。此外，通过这种方法或通过去合金化产生的纳米级三维金属结构将被评估为制造更复杂的纳米结构的潜在途径，包括那些可以用于超声传感应用的纳米结构。这项工作中将发展的基本概念将对许多其他科学和技术学科产生影响。也许最直接的一个是应用于微电子制造，在复杂的衬底上精确、均匀的沉积(即“保形沉积”)仍然是一个令人望而生畏的挑战。自组织2D金属结构、活性催化剂单分子层的设计或碳纳米管的有序生长是其他一些例子。该计划整合了从高中到研究生的教育内容，并解决了物理科学前沿研究的发展，其主题超越了长期可持续技术发展的主题。该计划的长期目标是培养出能够应对现代世界技术挑战的高素质科学家和工程师。