Multifunctional Hierarchical Structures Via Holographic Lithography and Block Copolymer Self Assembly

自上而下和自下而上是两种纳米制造方法，它们允许人们实现纳米尺度的结构。自上而下的方法正在接近它所能提供的特征尺寸的理论极限。相比之下，从定制的分子开始，自下而上的方法，如自组装，可以很容易地达到纳米特征尺寸。然而，自组装的一个缺点是难以实现大规模、无缺陷的结构。在一个系统中结合自顶向下和自底向上的方法可以产生具有小特征尺寸和更少缺陷的新型分级纳米结构。PI旨在通过结合全息光刻（自顶向下技术）和嵌段共聚物自组装（自底向上方法）来制造分级有序的纳米结构（从几纳米到微米尺度）。拟议研究的具体目标是：（1）通过结合全息光刻和嵌段共聚物自组装来制造分级纳米结构，以及（2）使用均聚物和嵌段共聚物两者作为媒介物来将多种官能团引入分级纳米结构中，并且制造用于热敏光开关、高密度数据存储、该项目如果成功，可能会导致一种新的方法来实现各种技术应用的分级纳米结构。建议的教育部分包括：（1）开发一个？聚合物材料使纳米制造成为可能？模块，将用于在？纳米结构聚合物材料当然了(2)让高中学生和教师，特别是代表性不足的人群参与拟议的研究活动。

Top-down and bottom-up are two nanomanufacturing approaches which allow one to achieve nanometer scale structures. Top-down method is approaching its theoretic limits on the feature size that it can offer. In contrast, starting from tailored molecules, bottom-up method such as self assembly can easily reach nanometer feature sizes. One drawback of self assembly, however, is the difficulty to achieve large scale, defect-free structures. Combining the top-down and bottom-up methods in one system can lead to novel hierarchical nanostructures with small feature size and less defects. The PI aims to fabricate hierarchically ordered nanostructures (from a few nanometers to micron scale) by combining holographic lithography (top-down technique) and block copolymer self assembly (bottom-up method). The specific aims of the proposed research are: (1) Fabricating hierarchical nanostructures by combining holography lithography and block copolymer self-assembly, and (2) Using both homopolymer and block copolymers as the vehicle to introduce a variety of functional groups into the hierarchical nanostructure and fabricating multifunctional nanostructures for thermal sensitive optical switches, high density data storage, and porous membrane applications.The proposed project, if successful, could lead to a new method to achieve hierarchical nanostructures for a variety of technological applications. The educational component of the proposal includes: (1) Developing a ?Polymeric Materials Enabled Nanomanufacturing? module that will be used in the ?Nanostructured Polymeric Materials? course. (2) Involving high school students and teachers, particularly under-represented populations, in the proposed research activities.