High-throughput Nano-Scale Patterning for Large-area Nanomanufacturing

用于大面积纳米制造的高通量纳米级图案化

• 批准号: 1537440
• 负责人: L. Jay Guo
• 金额: $ 32万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2019-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1537440&HistoricalAwards=false
• 关键词: throughput; Nano; Scale; Patterning; Large

There is an increasing interest and a strong need for nanomanufacturing technologies that are scalable both in processing area and speed. These technologies are needed to meet the growing markets in a wide range of applications from electronics to energy to biomedical. Examples include nanostructures to improve the brightness and power efficiency of flat panel displays, self-cleaning and anti-reflective surfaces for displays and photovoltaic devices, and patterned surfaces (for example, mimicking patterns on shark fins) to resist bacterial growth. Despite progress at various levels, a versatile nanofabrication technology that can meet the necessary requirements of high resolution, high fabrication speed, cost effectiveness and large area processing is lacking. This award will pave the way for future deployment of high-throughput nanopatterning for such applications for which the deep ultra-violet photolithography, used by the semiconductor industry, is too expensive to apply. This research involves several disciplines of science and engineering including nanomanufacturing, optical design, modeling and simulation, characterization and process development. These disciplines will be integrated into curriculum development and development of mini projects to give hands-on research opportunity for undergraduate and minority students.The resolution of photolithography is limited by the light diffraction limit. To overcome this limit, the new concept of plasmonics-based lithography was introduced as early as 2004 and followed later with the approach of hyperlens by taking advantage of intrinsically small plasmon wavelength. However there have been critical challenges impeding the progress of this field. For example, the design of the appropriate structures for masks is difficult and, due to the near-field nature of the photoresist exposure, the quality of the nanostructures (shallow depth and rough patterns) is very low. The research team aims to close the knowledge gap by developing reliable mask and hyperlens designs and investigate innovative strategies to produce high quality nanoscale patterns. They will explore unique dispersions of the hyperbolic metamaterial to achieve nanoscale features with pitch much reduced from that on the photomask. The proposed techniques, when implemented with a new roller lithography approach, combines some of the best features of photolithography, soft lithography, and continuous roll-to-roll and roll-to-plate patterning technologies toward realizing complex nanostructures for practical applications.

人们对在加工面积和速度上都可扩展的纳米制造技术的兴趣和需求日益增加。这些技术需要满足从电子到能源到生物医学等广泛应用领域不断增长的市场。例如，用于提高平板显示器亮度和功率效率的纳米结构，用于显示器和光伏设备的自清洁和抗反射表面，以及用于抵抗细菌生长的图案表面（例如，模仿鲨鱼鳍上的图案）。尽管在各个层面上都取得了进展，但目前还缺乏一种能够满足高分辨率、高制造速度、高成本效益和大面积加工要求的通用纳米制造技术。该奖项将为高通量纳米图形的未来部署铺平道路，用于半导体工业中使用的深紫外光刻技术过于昂贵而无法应用。这项研究涉及多个科学和工程学科，包括纳米制造、光学设计、建模和仿真、表征和工艺开发。这些学科将整合到课程开发和小项目开发中，为本科生和少数民族学生提供动手研究的机会。光刻的分辨率受光衍射极限的限制。为了克服这一限制，早在2004年就提出了基于等离子体的光刻的新概念，随后又提出了利用固有小等离子体波长的超透镜方法。然而，阻碍这一领域进展的关键挑战一直存在。例如，为掩模设计合适的结构是困难的，并且由于光刻胶曝光的近场性质，纳米结构的质量（浅深度和粗糙图案）非常低。研究小组的目标是通过开发可靠的掩模和超透镜设计来缩小知识差距，并研究生产高质量纳米级图案的创新策略。他们将探索双曲超材料的独特分散体，以实现比光掩膜上的间距小得多的纳米级特征。当采用一种新的辊式光刻方法时，所提出的技术结合了光刻、软光刻以及连续卷对卷和卷对板图案技术的一些最佳特性，以实现实际应用中的复杂纳米结构。