Fundamental Understanding of Lotus Effect and Its Application in MEMS Stiction Prevention

莲花效应的基本认识及其在 MEMS 防粘连中的应用

• 批准号: 0422553
• 负责人: Ching-Ping Wong
• 金额: $ 25万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-10-01 至 2008-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0422553&HistoricalAwards=false
• 关键词: Fundamental; Understanding; Lotus; Effect; Its

The research objectives of the proposed work are to achieve a fundamental understanding of the novel Lotus Effect coating, and to implement the Lotus Effect coating in microelectromechanical systems (MEMS) for stiction prevention. Possessing two indispensable characteristic properties: superhydrophobicity and self-cleaning, the Lotus Effect materials have a great potential as an anti-stiction coating for MEMS. The PI proposes novel approaches to produce Lotus Effect surfaces, including creating nanoscale roughness on a hydrophobic surface by plasma, and coating functional self-assembled monolayers on nanoporous substrates. The fundamental mechanism of the superhydrophobicity and the self-cleaning process of Lotus Effect materials will be studied through the mathematic modeling of the relationship between surface morphology, surface wetting, and surface adhesion. The Lotus Effect coating is an excellent example of bio-mimic nano-materials. The proposed research work will add to the knowledge base of the nano surface engineering and contribute to the progress of novel material development through bio-mimicking processes. In addition, the superhydrophobic and self-cleaning coatings will have wide applications on glass, ceramics, textiles, building materials, boat, airplane, automobiles and other surfaces, to reduce or eliminate the efforts and expenses of routine cleaning, as such, they will reduce the energy and detergent usages, and thus will benefit our society and environment. This Grant Opportunities for Academic Liaison with Industry (GOALI) grant provides an industrial-university linkage between Georgia Institute of Technology and nGimat Co. and will enhance technology transfer.

拟议的工作的研究目标是实现一个基本的理解，新的莲花效应涂层，并实现莲花效应涂层的微机电系统（MEMS）的静摩擦预防。莲花效应材料具有两个不可或缺的特性：超疏水性和自清洁性，作为MEMS的抗粘附涂层具有很大的潜力。PI提出了新的方法来产生莲花效应表面，包括通过等离子体在疏水表面上产生纳米级粗糙度，以及在纳米多孔基底上涂覆功能性自组装单层。通过对表面形貌、表面润湿性和表面粘附力之间关系的数学建模，研究了莲花效应材料超疏水性和自清洁过程的基本机理。莲花效应涂层是仿生纳米材料的一个很好的例子。这项研究工作将丰富纳米表面工程的知识基础，并有助于通过仿生过程开发新材料。此外，超疏水和自清洁涂层将在玻璃、陶瓷、纺织品、建筑材料、船舶、飞机、汽车和其他表面上具有广泛的应用，以减少或消除常规清洁的努力和费用，因此，它们将减少能源和洗涤剂的使用，从而有益于我们的社会和环境。这一赠款机会学术联络与产业（GOALI）赠款提供了一个工业大学之间的联系格鲁吉亚理工学院和nGimat公司，并将加强技术转让。