Shear-Aligned Assembly of Photonic Band Gap Coatings

光子带隙涂层的剪切对齐组装

• 批准号: 0651780
• 负责人: Peng Jiang
• 金额: $ 5万
• 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: 2007
• 资助国家: 美国
• 起止时间: 2007-05-01 至 2009-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0651780&HistoricalAwards=false
• 关键词: Shear; Aligned; Assembly; Photonic; Band

National Science Foundation - Division of Chemical &Transport Systems Particulate & Multiphase Processes Program (1415)Proposal Number: 0651780 Principal Investigators: Jiang, Peng Affiliation: University of Florida Proposal Title: Shear-Aligned Assembly of Photonic Band Gap Coating Intellectual MeritThis proposal aims to develop understanding and control of a robust spin-coating technology that enables large-scale production and integration of photonic crystals and a diverse range of nanostructured materials. Although simpler and less expensive than nanolithography for creating photonic crystals, the colloidal self-assembly approach suffers from low throughput and limited crystal structures. By contrast, the spin-coating method developed by the PI combines the simplicity and cost benefits of traditional self-assembly with the scalability and compatibility of nanolithography, allowing for the creation of wafer-scale colloidal crystals with non-close-packed structures.The mechanism by which the colloidal single crystals, with remarkably large domain sizes and unusual non-close-packed structures, form is not understood. Consequently, the research team will perform an experimental and theoretical investigation of the shear-aligned crystallization process. The team will employ light diffraction, laser scanning confocal microscopy, optical spectroscopy, and rheology to elucidate the microstructures and disorder-order transition during spin-coating. The team will use Stokesian dynamics simulations to model the applied hydrodynamic, colloidal, and Brownian forces; the microstructures and rheological properties of colloidal dispersions subjected to uniform and non-uniform shear flow, as appropriate for the spin-coating process, will be calculated. The photonic band gaps of the photonic crystals will be compared with theoretical calculations using scalar wave approximation and the MIT Photonic-Bands package.Broader ImpactThe proposed research program will lead to significant breakthroughs in fabricating and integrating photonic-crystal-based nanooptical devices for all-optical integrated circuits and quantum information processing, as well as important technological applications in subwavelength optics, plasmonic sensors, efficient OLEDs and photovoltaics, high-density magnetic recording media, and bio-microanalysis. Improved understanding of the fundamental aspects of flow-induced crystallization, melting, and relaxation within non-uniform shear flows, a topic that has received little or no examination, will also result.The educational program will impact students at all education levels. Outreach efforts through a local museum will bring modern technology 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. Finally, collaborative efforts with high school teachers to develop classroom materials will favorably impact numerous students at the secondary level.

国家科学基金会 - 化学与运输系统部颗粒与多相过程计划（1415）提案编号：0651780首席研究人员：江，彭隶属：佛罗里达大学提案标题标题：剪切的光子带隙的剪切组装，以发展智力和整合的构成型号的良好的旋转技术，以促进和控制良好的旋转技术，以实现良好的旋转技术，以实现良好的旋转技术，以实现良好的技术，以实现良好的技术效果。纳米结构材料范围。虽然比纳米光刻更简单，更便宜，但在产生光子晶体方面，胶体自组装方法遭受了低吞吐量和有限的晶体结构。相比之下，PI开发的自旋涂层方法结合了传统自组装的简单性和成本优势和纳米印刷术的可伸缩性和兼容性，允许创建具有非粘液式结构的晶状体尺度胶体晶体，并具有非粘液的机制。通过这些机制，插入的单晶体具有很大的构造，并不属于不合同的构造，并不像是无用的。因此，研究团队将对剪切一致的结晶过程进行实验和理论研究。该团队将采用光衍射，激光扫描共聚焦显微镜，光谱和流变学来阐明自旋涂层期间的显微结构和障碍级过渡。该团队将使用Stokesian Dynamics模拟来对应用的流体动力，胶体和布朗部队进行建模。将计算胶体分散体的微观结构和流变特性，该胶体分散剂将计算出均匀和不均匀的剪切流，适合于自旋涂层过程。光子晶体的光子条带间隙将与使用标量波近似和MIT光子频段包装的理论计算进行比较。BoaderImpact the拟议的研究计划将在制造和整合基于光子晶体的NanOptical设备方面具有重大突破OLED和光伏，高密度磁记录介质和生物微分析。对流动引起的结晶，融化和放松在非均匀剪切流中的基本方面的理解也将导致一个很少或没有检查的话题。教育计划将影响学生的所有教育水平。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的现代技术将现代技术带给年轻人和成人。最后，与高中教师开发课堂材料的合作努力将对次要级别的众多学生有利。