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Active Surfaces and Interfaces of Soft Materials

dc.contributor.advisor Zhao, Xuanhe
dc.contributor.author Wang, Qiming
dc.date.accessioned 2014-08-27T15:21:57Z
dc.date.available 2014-08-27T15:21:57Z
dc.date.issued 2014
dc.identifier.uri https://hdl.handle.net/10161/9083
dc.description.abstract <p>A variety of intriguing surface patterns have been observed on developing natural systems, ranging from corrugated surface of white blood cells at nanometer scales to wrinkled dog skins at millimeter scales. To mimetically harness functionalities of natural morphologies, artificial transformative skin systems by using soft active materials have been rationally designed to generate versatile patterns for a variety of engineering applications. The study of the mechanics and design of these dynamic surface patterns on soft active materials are both physically interesting and technologically important. </p><p>This dissertation starts with studying abundant surface patterns in Nature by constructing a unified phase diagram of surface instabilities on soft materials with minimum numbers of physical parameters. Guided by this integrated phase diagram, an electroactive system is designed to investigate a variety of electrically-induced surface instabilities of elastomers, including electro-creasing, electro-cratering, electro-wrinkling and electro-cavitation. Combing experimental, theoretical and computational methods, the initiation, evolution and transition of these instabilities are analyzed. To apply these dynamic surface instabilities to serving engineering and biology, new techniques of Dynamic Electrostatic Lithography and electroactive anti-biofouling are demonstrated.</p>
dc.subject Mechanics
dc.subject Materials Science
dc.subject Polymer chemistry
dc.subject Dielectric elastomer
dc.subject electrostatic lithography
dc.subject Soft active materials
dc.subject Surface instability
dc.subject surface patterning
dc.title Active Surfaces and Interfaces of Soft Materials
dc.type Dissertation
dc.department Mechanical Engineering and Materials Science


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