Contact, Deformations, and Adhesion Between Rough Surfaces

;​你是说，你是说，你是说，你是说，你是说，你是说，你是说，你是说，你是说，你是说，你是说，你是说，0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0/ 0 1 F Microsoft Word 6.0 Document MSWordDoc6;​本论文的重点是阐明表面化学和形貌如何控制固体之间的相互作用，因为它们是进入分子外接触。我们研究的主要工具是表面力装置，这是一种设计用来测量两个相对表面之间的力，因为它们的分离是变化的。最近，随着扩展光谱分析多波束干涉法（ESA-MBI）的发展，我们将表面力仪器的能力扩展到一个新的水平。这种用于确定表面分离的光学技术允许金属用作表面力装置中的衬底。除了打破表面力仪器在这类重要材料上的应用之外，ESA-MBI还有另一个优势：该技术提供了关于表面粗糙度的程度和形式的信息，现场，当一个表面与另一个表面接触或靠近时产生的应力状态。我们建议利用发生在粗糙接口上的基本交互作用。这样的界面将在两个表面——其中一个或两个表面——进入或脱离分子接触时形成。本研究的特别重点将是研究具有不同化学和机械性能的表面之间的接触、变形和粘附。我们的研究将利用自组装单层形成作为表面改性的载体。;哦，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，$ H l D H R:\WWUSER\TEMPLATE\NORMAL。德里克·迈尔斯·德里克·迈尔斯@ ？@吗?@吗?2 . Microsoft Word 6.0E = E；jjjjjjjjj1 & & &；摘要CTS-9423780 T. Kyle Vanderlick University of Pennsylvania本提案的重点是阐明表面化学和地形如何控制固体之间的相互作用，因为它们是进入分子外接触。我们研究的主要工具是表面力装置，这是一种设计用来测量两个相对表面之间的力，因为它们的分离是变化的。最近，随着扩展光谱分析多波束干涉法（ESA-MBI）的发展，我们将表面力仪器的能力扩展到一个新的水平。这种用于确定表面分离的光学技术允许金属用作表面力装置中的衬底。除了打破表面力仪器在这类重要材料上的应用之外，ESA-MBI还有另一个优势：该技术提供了关于表面粗糙度的程度和形式的信息，现场，当一个表面与另一个表面接触或靠近时产生的应力状态。我们建议采取行动

; R o o t E n t r y F C o m p O b j b W o r d D o c u m e n t ; O b j e c t P o o l i i 4 @ ( ) * + , - . / 0 1 F Microsoft Word 6.0 Document MSWordDoc Word.Document.6 ; ABSTRACT CTS-9423780 T. Kyle Vanderlick University of Pennsylvania The focus of this proposal is to elucidate how surface chemistry and topography control the interactions between solids as they are into an out of molecular contact. The primary tool of our investigations is the surface forces apparatus, a device designed to measure the forces acting between two opposed surfaces as their separation is varied. Recently, we extended the capabilities of the surface forces apparatus to new level with the development of Extended Spectral Analysis Multiple Beam Inteferometry (ESA-MBI). This optical technique, which is used to determine surface separation, allow metals to be used as substrates in the surface force apparatus. In addition to breaking open the application of the surface forces apparatus to this important class of material, ESA-MBI boasts another advantage: the technique provides information on the degree and form of surface roughness, in-situ, under states of stress that result when one surface is in contact with, or near to another. We propose to take advantage the fundamental interac tions occurring across rough interfaces. Such interfaces will be formed upon bringing two surfaces-one or both of them rough-into and out of molecular contact. A particular focus of this research will be to study the contact, deformations, and adhesion between surfaces with different chemical and mechanical properties. Our studies will take advantage of self-assembled monolayer formation as a vehicle for surface modification. ; Oh +' 0 S u m m a r y I n f o r m a t i o n ( ' $ H l D h R:\WWUSER\TEMPLATE\NORMAL.DOT Derrick Myers Derrick Myers @ ? @ ? @ ? @ Microsoft Word 6.0 2 e = e ; j j j j j j 1 & j T . j j j j j j r j j j j ABSTRACT CTS-9423780 T. Kyle Vanderlick University of Pennsylvania The focus of this proposal is to elucidate how surface chemistry and topography control the interactions between solids as they are into an out of molecular contact. The primary tool of our investigations is the surface forces apparatus, a device designed to measure the forces acting between two opposed surfaces as their separation is varied. Recently, we extended the capabilities of the surface forces apparatus to new level with the development of Extended Spectral Analysis Multiple Beam Inteferometry (ESA-MBI). This optical technique, which is used to determine surface separation, allow metals to be used as substrates in the surface force apparatus. In addition to breaking open the application of the surface forces apparatus to this important class of material, ESA-MBI boasts another advantage: the technique provides information on the degree and form of surface roughness, in-situ, under states of stress that result when one surface is in contact with, or near to another. We propose to take ad