Interfacial Adhesion due to Liquid Mediated Contact of Hydrophilic Solid Surfaces

摘要

When liquid presents between solid contact hydrophilic surfaces, the formed macro/micro menisci cause inherit adhesive force due to surface tension. Such adhesive force may lead high friction and adhesion and cause system failure of many mechanical systems, and thus liquid caused high adhesion is one of the major limit factors to many micro/nano devices having contact surfaces with relative motion. In this study, the involved forces such as meniscus force were modeled, separation processes were numerical simulated and analyzed. Various liquids, such as water and commonly used liquid lubricants, were used. Informative results and insights of the separation of hydrophilic solid surfaces from liquid were obtained and presented.