NSF Young Investigator

NSF 青年研究员

• 批准号: 9257094
• 负责人: Chi Mak
• 金额: $ 31.25万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1998-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9257094&HistoricalAwards=false
• 关键词: NSF; Young; Investigator

Dr. Chi Mak is supported by an NSF Young Investigator Award from the Theoretical and Computational Chemistry Program to perform theoretical studies of tunneling processes in condensed phase systems. Mak will employ a spin-boson model which involves a two-state system coupled to a harmonic bath as a primary model for dissipative tunneling reactions. This model system has been chosen as one which embodies the essence of the physical contents of the real system, but at the same time retains sufficient simplicity to be tractable. Mak will employ this model to study: 1) aqueous electron transfer reactions; 2) light particle diffusion in solids; and 3) quantum electron devices. %%% A number of important chemical processes and materials properties depend on a phenomenon known as quantum tunneling. Biological reactions which involve electron transfer, the diffusion of hydrogen atoms through metals, and the operation of electronic devices such as the resonant tunneling diode and the quantum interference transistor are all examples of phenomena which involve quantum tunneling. The theoretical studies performed by Dr. Mak will enhance our understanding of these molecular processes, and help us to put that understanding to use in designing new materials with important chemical and physical properties.

Chi Mak 博士获得 NSF 理论和计算化学项目青年研究员奖的支持，对凝聚相系统中的隧道过程进行理论研究。 Mak 将采用自旋玻色子模型，该模型涉及耦合到谐波浴的二态系统作为耗散隧道反应的主要模型。 选择该模型系统是因为它体现了真实系统物理内容的本质，但同时又保留了足够的简单性以便于处理。 Mak将利用该模型来研究：1）水中的电子转移反应； 2）固体中的轻粒子扩散； 3）量子电子器件。 %%% 许多重要的化学过程和材料特性取决于一种称为量子隧道效应的现象。 涉及电子转移、氢原子通过金属的扩散的生物反应以及谐振隧道二极管和量子干涉晶体管等电子器件的操作都是涉及量子隧道效应的现象的例子。 麦博士进行的理论研究将增强我们对这些分子过程的理解，并帮助我们将这种理解应用于设计具有重要化学和物理特性的新材料。