Ultrafast Dynamics of Polymer Laser Microchemistry and Energy Transfer

聚合物激光微化学和能量转移的超快动力学

• 批准号: 9404806
• 负责人: Dana Dlott
• 金额: $ 35.7万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-07-15 至 1997-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9404806&HistoricalAwards=false
• 关键词: Ultrafast; Dynamics; Polymer; Laser; Microchemistry

Dlott The goal of this research is a better understanding of the fundamental mechanisms by which a short intense laser pulse modifies the properties of a micrometer scale spot on a polymer thin film. The processes which will be studied are laser surface ablation and laser photopolymerization. Microchemistry processes are widely used in photomicrolithography, electronics, and many other high technology industries, but due to the complicated nature of the laser-material interaction and the diversity and complexity of the materials used therein, are poorly understood at a fundamental level. Specific practical applications discussed here include laser ablation, microimage formation, laser assisted material transfer, and shock-based methods involving fast compression, shearing and smashing. The intent of this work is to go beyond the current level of understanding these processes at a technical level to develop a detailed molecular level understanding. %%% The goal of this research is a better understanding of the fundamental mechanisms by which a short intense laser pulse modifies the properties of a micrometer scale spot on a polymer thin film. The processes which will be studied are laser surface ablation and laser photopolymerization. Microchemistry processes are widely used in photomicrolithography, electronics, and many other high technology industries, but due to the complicated nature of the laser-material interaction and the diversity and complexity of the materials used therein, are poorly understood at a fundamental level.

这项研究的目的是为了更好地理解短强度激光脉冲改变聚合物薄膜上微米尺度光斑特性的基本机制。研究的工艺有激光表面烧蚀和激光光聚合。微化学工艺广泛应用于显微光刻、电子和许多其他高科技行业，但由于激光与材料相互作用的复杂性以及其中使用的材料的多样性和复杂性，人们在基础层面上知之甚少。这里讨论的具体实际应用包括激光烧蚀、微图像形成、激光辅助材料转移和基于冲击的方法，包括快速压缩、剪切和粉碎。这项工作的目的是超越目前在技术水平上理解这些过程的水平，以发展详细的分子水平理解。这项研究的目标是更好地理解短强度激光脉冲改变聚合物薄膜上微米尺度光斑特性的基本机制。研究的工艺有激光表面烧蚀和激光光聚合。微化学工艺广泛应用于显微光刻、电子和许多其他高科技行业，但由于激光与材料相互作用的复杂性以及其中使用的材料的多样性和复杂性，人们在基础层面上知之甚少。