Nanostructures, Polymers and Dense Fluids: Ultrafast Dynamics

纳米结构、聚合物和稠密流体：超快动力学

• 批准号: 0070267
• 负责人: Ahmed Zewail
• 金额: $ 99.59万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-05-01 至 2005-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0070267&HistoricalAwards=false
• 关键词: Nanostructures; Polymers; Dense; Fluids; Ultrafast

This project will focus on resolving primary picosecond and femtosecond dynamics under conditions of controlled size, density and distance, and to learn about structure-dynamics correlations and forces governing the transition to the condensed phase limit for various materials systems. Ultrafast laser spectroscopy will be used to probe real-time molecular dynamics of nanostructures in the condensed phase, studies of the photophysical and photochemical dynamics of polymers and materials under high pressure, and the use of novel and non-linear laser techniques will be used to examine and control selective processes in inhomogeneous systems.The potential for nanoscale materials and processes and their novel uses in various nanoscale device are just beginning to be realized for technologies such as communications, biotechnology, and various microelectromechanical systems. Students trained in science and engineering areas that explore the physical, chemical, and biological properties of materials intermediate in size between isolated atoms/molecules and bulk materials, where phenomena length scales become comparable to the size of the structure, will be among those future scientists and engineers most relevant to advancing the emerging global economy.

该项目将专注于解决主要皮秒和飞秒动力学条件下的控制尺寸，密度和距离，并了解结构动力学的相关性和力量的控制过渡到凝聚相极限的各种材料系统。 超快激光光谱学将用于探测凝聚相中纳米结构的实时分子动力学，高压下聚合物和材料的物理和光化学动力学研究，使用新的和非-线性激光技术将被用于检测和控制非均匀系统中的选择性过程。纳米材料和过程的潜力以及它们在各种纳米器件中的新用途是在通信、生物技术和各种微机电系统等技术方面才刚刚开始实现。 学生在科学和工程领域，探索物理，化学和材料的生物学特性之间的隔离的原子/分子和散装材料，其中现象的长度尺度变得可比的结构的大小，将是那些未来的科学家和工程师最相关的推进新兴的全球经济。