Presidential Young Investigator Award

总统青年研究员奖

• 批准号: 8958061
• 负责人: Mehran Kardar
• 金额: $ 20.95万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-15 至 1996-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8958061&HistoricalAwards=false
• 关键词: Presidential; Young; Investigator; Award

Studies of static and dynamics of surfaces, interfaces, and networks will be continued. Specific focus will be on the following areas: (1) The role of entropy in generating elasticity and rigidity in tenuous networks such as polymers and gels. In particular, two dimensional polymeric sheets present a challenging and potentially fruitful area of study. The effects of steric and Coulomb interactions in membranes and other networks will be explored. (2) The role of dynamically generated nonlinearities on non-equilibrium surfaces. Formation of cusps during growth in expansion, and deposition processes will be examined. Similarly the roughness of a surface subject to longitudinal driving fields will be studied. (3) The pinning and roughening of domain walls and linear defects due to impurities in magnets.

将继续对表面、界面和网络的静态和动态研究。 具体重点将放在以下领域：（1）熵在聚合物和凝胶等脆弱网络中产生弹性和刚性的作用。 特别是，二维聚合物片材是一个具有挑战性且可能富有成果的研究领域。 将探讨膜和其他网络中空间相互作用和库仑相互作用的影响。 (2) 非平衡表面上动态生成的非线性的作用。 将检查扩展生长过程中尖点的形成和沉积过程。 类似地，还将研究受到纵向驱动场影响的表面的粗糙度。 (3)磁体中的杂质引起的磁畴壁的钉扎和粗糙化以及线状缺陷。