CAREER: Development of A Scalable Spin-Coating Technological Platform for Colloidal Self-Assembly and Templating Nanofabrication

职业：开发用于胶体自组装和模板纳米加工的可扩展旋涂技术平台

• 批准号: 0744879
• 负责人: Peng Jiang
• 金额: $ 40万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-03-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0744879&HistoricalAwards=false
• 关键词: CAREER; Development; Scalable; Spin; Coating

0744879JiangPhotonic crystals and plasmonics are two key techniques that will ultimately enable alloptical integrated circuits and quantum information processing. Unfortunately, the development and implementation of these techniques have been greatly impeded by expensive and painstaking topdown nanofabrication (e.g., electron-beam lithography), which limit the available sample size to less than 1 mm2. By contrast, bottom-up colloidal self-assembly and templating nanofabrication provide a much simpler, faster, and inexpensive alternative to nanolithography in creating highly ordered photonic crystals and plasmonic nanostructures. However, the traditional colloidal self-assembly and templating approach suffers from low throughput, incompatibility with standard microfabrication, and limited crystal structures which greatly hamper the mass-production and on-chip integration of practical nanooptical devices.Intellectual Merit. This proposal aims to develop understanding and control of a robust spin-coating technology that combines the simplicity and cost benefits of bottom-up self-assembly with the scalability and compatibility of top-down microfabrication. This will enable the creation of wafer-scale photonic crystals and a large variety of functional subwavelength-structured materials. The research plan has four specific objectives: (1) elucidate the basic crystallization mechanisms by which unusual nonclose-packed colloidal crystals form during spin-coating, (2) determine the photonic band gap properties of shear-aligned colloidal photonic crystals, (3) investigate the surface plasmon properties of templated periodic metallic nanostructures, including enhanced optical transmission through subwavelength nanohole arrays and surface-enhanced Raman scattering (SERS) on nanovoid gratings, and (4) develop biomimetic subwavelength-structured antireflection coatings for high-efficiency solar cells. The proposed experimental and theoretical investigation will lead to significant breakthroughs in a wide spectrum of fields ranging from all-optical integrated circuits to plasmonic sensors to sustainable energy. Improved fundamental understanding of flow-induced crystallization and melting within non-uniform shear flows, a topic that has received little or no examination, will also result. The creative and original components of the research plan rely on the integration of the above four objectives. Insights gained into basic mechanisms facilitate better control over the crucial crystalline parameters for tailoring the optical properties in the later objectives. Most importantly, the periodic plasmonic nanostructures and subwavelength-structured antireflection coatings are indeed 2-D photonic crystals, and are thus studied with similar experimental (optical spectroscopy) and modeling (rigorous coupled-wave analysis) techniques as photonic crystals. The unification of these apparently different but intrinsically interconnected fields under one umbrella ? the spin-coating platform could lead to new optical features that are interesting fundamentally and technologically.Broader Impacts. In conjunction with student mentorship and curriculum development activities, the closely integrated educational plan focuses on developing several outreach activities to educate K-12 students and teachers as well as the general public on nanooptics and self-assembly. An educational display for the Florida Museum of Natural History?s ?Butterfly Rainforest Center? will be created to disseminate the nanooptical mechanisms of the striking blue colors of morpho butterfly wings and the antireflection properties of butterfly eyes, along with how to mimic these natural photonic crystals and antireflection coatings using colloidal self-assembly. Direct participation of high school students from underrepresented groups in the research program and development of educational modules on making brilliant artificial opals through collaboration with high school teachers will be sought through several successful programs at the university. The spin-coating platform will advance many other areas that depend on the creation of large-area periodic nanostructures not covered by this proposal, ranging from high-density magnetic recording to bio-microanalysis. The integrated educational program will impact students at all education levels. Outreach efforts through a local museum will bring modern nanooptics to young students and adults through a fun learning experience and participation of high school students in the research program will benefit the students and their larger communities. Collaborative efforts with high school teachers to develop colorful demonstration modules will favorably impact hundreds of students per year at the secondary level with a low annual cost ($1,000) and help the program to spread outside the State of Florida.

0744879Jiangphotonic晶体和等离子体学是两种关键技术，最终将实现异常集成电路和量子信息处理。不幸的是，这些技术的开发和实施极大地阻碍了昂贵且艰苦的上下纳米制作（例如电子束光刻），这将可用样本量限制在小于1 mmm2的情况下。相比之下，自下而上的胶体自组装和模板纳米构造提供了一种更简单，更快，廉价的替代纳米石刻造影的替代方案，可以创建高度有序的光子晶体和等离子纳米结构。然而，传统的胶体自组装和模板方法遭受低通量，与标准微型化的不兼容以及有限的晶体结构，这极大地阻碍了实用纳米型设备的质量生产和片段整合。该建议旨在发展对强大的自旋涂层技术的理解和控制，该技术将自下而上的自组装的简单性和成本优势与自上而下的微型制作的可扩展性和兼容性相结合。这将使晶圆尺度光子晶体和各种功能性亚波结构材料的创建。 The research plan has four specific objectives: (1) elucidate the basic crystallization mechanisms by which unusual nonclose-packed colloidal crystals form during spin-coating, (2) determine the photonic band gap properties of shear-aligned colloidal photonic crystals, (3) investigate the surface plasmon properties of templated periodic metallic nanostructures, including enhanced optical transmission through subwavelength nanohole arrays and表面增强的拉曼散射（SERS）在纳米接受光栅上，（4）为高效太阳能电池开发仿生亚波长结构的抗反射涂层。 拟议的实验和理论研究将导致在从全光综合电路到等离子体传感器再到可持续能量的广泛领域的显着突破。对流动诱导的结晶和非均匀剪切流的融化的基本理解也将导致几乎没有或根本没有检查的话题。研究计划的创造性和原始组成部分取决于上述四个目标的整合。获得基本机制的洞察力有助于更好地控制关键的晶体参数，以定制后来目标中的光学特性。最重要的是，周期性的等离子纳米结构和亚波结构的抗反射涂层确实是二-D光子晶体，因此使用相似的实验（光谱光谱）和建模（严格的耦合波分析）技术研究了与光子晶体。这些明显不同但本质上相互联系的场在一个保护伞下的统一？自旋涂层平台可能会导致新的光学特征从根本和技术上都有趣。结合学生指导和课程发展活动，紧密整合的教育计划着重于开发几项外展活动，以教育K-12学生和老师以及有关Nanooptics和自我组装的公众。 佛罗里达自然历史博物馆的教育展览会？蝴蝶雨林中心？将创建以传播形态蝴蝶翅膀引人注目的蓝色和蝴蝶眼的抗反射特性的纳米式机制，以及如何使用胶体自组装模仿这些天然光子晶体和抗反射涂层。来自代表性不足的小组的高中生在研究计划中的直接参与研究计划，并通过与高中教师合作制作出色的人造蛋白石的教育模块开发，该大学将通过大学的几个成功课程寻求。 自旋涂层平台将推进许多其他领域，这些领域取决于该提案未涵盖的大面积周期性纳米结构，范围从高密度磁记录到生物微分析。综合教育计划将影响所有教育水平的学生。通过当地博物馆的宣传工作将通过有趣的学习经验和高中生参与研究计划将现代纳米工具带给年轻的学生和成人，这将使学生及其较大的社区受益。与高中教师共同开发丰富多彩的演示模块的合作努力将以低年级成本（1,000美元）的二级学生有利地影响数百名学生，并帮助该计划在佛罗里达州以外传播。