In-Situ Laser Spectroscopic Studies of Boundary Lubricant Films

边界润滑膜的原位激光光谱研究

• 批准号: 9313820
• 负责人: Ronald Neuman
• 金额: $ 4万
• 依托单位: Auburn University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-01 至 1998-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9313820&HistoricalAwards=false
• 关键词: Situ; Laser; Spectroscopic; Studies; Boundary

9313820 Neuman A Surface force microscope equipped with silica surfaces and laser spectroscopic attachments will be used to simultaneously study the tribological properties of molecularly thin liquid films and the behavior of the molecules in the liquid. The techniques of sum-frequency generation and flourescence recovery after photobleaching will be used to independently measure molecular orientation, mobility, interacions with the surface, and relaxation. These properties will be correlated with stick- slip transitions, shear stress and rheology of the thin film. The liquids to be tested include perflouropolyether and n- hexadecane with and without phisisorbed and chemisorbed additives. Part of the work will be performed in cooperation with the Swedish Institute for Surface Chemistry in Stockholm. ***

9313820纽曼配备了二氧化硅表面和激光光谱附件的表面力显微镜将被用来同时研究分子薄膜的摩擦学特性和分子在液体中的行为。和频产生和光漂白后的荧光恢复技术将被用来独立地测量分子的取向、迁移率、与表面的相互作用和弛豫。这些性质将与粘滑转变、剪切应力和薄膜的流变性相关。被测试的液体包括带有和不带有物理吸附和化学吸附添加剂的全氟醚和正十六烷。部分工作将与设在斯德哥尔摩的瑞典表面化学研究所合作进行。***