SGER: Fabrication and Characterization of Asymmetric Nanoscale Surface Structures

SGER：不对称纳米级表面结构的制造和表征

• 批准号: 0906361
• 负责人: K. Jimmy Hsia
• 金额: --
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-01-15 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0906361&HistoricalAwards=false
• 关键词: SGER; Fabrication; Characterization; Asymmetric; Nanoscale

Nature provides many interesting examples of liquid interacting with nano-patterned surfaces to achieve a variety of functions such as repelling water and contaminants. Nanotechnology, on the other hand, enables manufacturing of nanoscale surface structures that could significantly alter surface hydrophobicity or hydrophilicity. The objective of this SGER proposal is to explore nanomanufacturing methods to fabricate nanoscale surface structures with asymmetric features and characterize their effects on liquid-surface interactions. A two-step, novel lithography method will be developed in this study. Deep reactive ion etching (DRIE) will be employed to produce high aspect ratio, asymmetric surface features in single crystalline silicon wafer. Different asymmetric patterns will be explored. Measurements will be carried out to characterize the hydrophobicity change of these surfaces as a function of asymmetric features. It is expected that such surface structures could be utilized to achieve functionalities that are not available in engineered materials and structures today.Understanding the interactions between liquid droplets and patterned surfaces will help address important issues in nanoscience and nanotechnology. The manufacturing method developed in this project will pave the way to creating complex surface nanostructures. Understanding the mechanisms of liquid-solid surface interactions in the presence of asymmetric surface nanostructures will provide materials that could be self-cleaning, or surface structures that may be used to repel or collect liquid. Moreover, training of graduate students in the proposed exploratory research gives them the chances to experience the progressive stages of scientific research, which will benefit their career in the future.

大自然提供了许多有趣的例子，说明液体与纳米图案表面相互作用，以实现各种功能，例如防水和污染物。 另一方面，纳米技术可以制造纳米级表面结构，从而显着改变表面疏水性或亲水性。该 SGER 提案的目的是探索纳米制造方法来制造具有不对称特征的纳米级表面结构，并表征它们对液体表面相互作用的影响。本研究将开发一种两步式的新型光刻方法。深反应离子蚀刻（DRIE）将用于在单晶硅片上产生高深宽比、不对称的表面特征。将探索不同的不对称模式。将进行测量来表征这些表面的疏水性变化作为不对称特征的函数。预计这种表面结构可用于实现当今工程材料和结构中无法实现的功能。了解液滴和图案化表面之间的相互作用将有助于解决纳米科学和纳米技术中的重要问题。该项目开发的制造方法将为创建复杂的表面纳米结构铺平道路。了解不对称表面纳米结构存在下液-固表面相互作用的机制将提供可自清洁的材料，或可用于排斥或收集液体的表面结构。此外，对研究生进行拟议的探索性研究的培训使他们有机会体验科学研究的进步阶段，这将有利于他们未来的职业生涯。