Toward Fundamental Understanding of Plasma Processing Mechanisms: In Situ Studies of the Gas-Surface Interface During Materials Deposition and Modification

对等离子体处理机制的基本理解：材料沉积和改性过程中气体-表面界面的原位研究

• 批准号: 0911248
• 负责人: Ellen Fisher
• 金额: $ 40.54万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0911248&HistoricalAwards=false
• 关键词: Toward; Fundamental; Understanding; Plasma; Processing

In this award, funded by the Experimental Chemistry Program of the Division of Chemistry, Professor Fisher from Colorado State University will investigate the effect of plasma modification processes on surfaces. Plasma processing has become indispensable in a wide range of applications where high performance materials with tailored surface properties are employed. Moreover, development of new plasma surface modification processes and deposition chemistries is a burgeoning area of significant impact to biomaterials, coatings, and sensor applications. A more complete understanding of the underlying chemistry in these systems could lead to manufacturing improvements with economic impact across many industries. Thus, the goal of the proposed work is to improve understanding of the fundamental chemical processes that occur at surfaces during plasma enhanced chemical vapor deposition and surface modification of polymers. Professor Fisher and her students will achieve this goal through an integrated, comprehensive approach to understanding the molecular-level chemistry in these systems. The primary experimental tools to be employed are in situ sum frequency generation (SFG) spectroscopy and the laser-based imaging of radicals interacting with surfaces (IRIS) technique, which provides steady-state surface interaction data for plasma species. The SFG experiments are designed to examine the evolution of plasma modified films upon exposure to atmospheric gases to study labile intermediates formed in plasma modification, thereby elucidating mechanisms involved in aging and hydrophobic recovery processes. The intrinsic interdisciplinary nature of this research will afford students a broad exposure to and education in chemistry, engineering, and materials science, beyond the traditional boundaries in chemistry. Professor Fisher will continue her efforts in broadening participation of underrepresented groups and use the proposed experiments to develop demonstrations of plasmas and lasers for visitors, high school groups and K-12 teachers.

在该奖项中，由化学系实验化学计划资助，科罗拉多州立大学的费舍尔教授将研究血浆修饰过程对表面的影响。在采用具有量身定制表面特性的高性能材料的广泛应用中，血浆处理已成为必不可少的。 此外，新的等离子体表面修饰过程和沉积化学的发展是对生物材料，涂料和传感器应用产生重大影响的新兴领域。对这些系统中的基本化学反应的更全面了解可能会导致制造改进，并在许多行业中经济影响。因此，提议的工作的目的是提高对血浆增强化学蒸气沉积和聚合物表面修饰期间在表面上发生的基本化学过程的理解。 费舍尔教授和她的学生将通过一种综合，全面的方法来了解这些系统中的分子级化学反应。要使用的主要实验工具是原位总和频率产生（SFG）光谱和基于激光的基于激光与表面（IRIS）技术相互作用的激光成像，该技术提供了血浆物种的稳态表面交互数据。 SFG实验旨在检查血浆改性膜在暴露于大气气体时的演变，以研究血浆修饰中形成的不稳定中间体，从而阐明了与衰老和疏水恢复过程有关的机制。这项研究的内在跨学科性质将为学生提供广泛的化学，工程和材料科学教育，超出了化学的传统界限。费舍尔教授将继续努力扩大代表性不足的团体的参与，并使用拟议的实验为访客，高中团体和K-12老师提供等离子体和激光的演示。