Bioinspired Fabrication of Periodically Organized Photonic Structures

周期性组织光子结构的仿生制造

• 批准号: 1005382
• 负责人: Michael Bartl
• 金额: $ 33.84万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-15 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1005382&HistoricalAwards=false
• 关键词: Bioinspired; Fabrication; Periodically; Organized; Photonic

ID: MPS/DMR/BMAT(7623) 1005382 PI: Bartl, Michael ORG: University of UtahTitle: Bioinspired Fabrication of Periodically Organized Photonic StructuresINTELLECTUAL MERIT: In the colored structures of many insects, colors are generated by optical interference produced through the interaction of light with periodically ordered low and high refractive index structures incorporated into the exoskeleton of the insects. Such structural colors have recently been of interest for use as photonic crystals with potential impact in next-generation energy and information technology applications. While current photonic engineering capabilities at visible wavelengths are rather limited, biological systems have evolved to create the most complex photonic architectures structures that are still far out of our synthetic reach. The proposed research is directed towards these biostructures and is focused on gaining detailed insights into the photonic structure formation/assembly mechanism of biological systems and developing biomimetic routes for the fabrication of novel three-dimensionally ordered dielectric materials for photonic applications. The PI will conduct high-resolution structural investigations of photonic architectures in iridescent beetles to uncover both the exact crystal lattices and their assembly environment. From these results, he will develop biomimetic structure formation experiments to study the assembly chemistry and physics of biopolymeric compounds in terms of solution composition, presence of surfactant-type molecules, and assembly/phase separation mechanism (nucleation and growth vs. spinodal decomposition). He will also combine these biopolymeric formation studies with spatial confinement effects. The goal is to mimic the three-dimensionally confined assembly-chambers in many beetles (exoskeleton scales) by fabricating microcompartments and investigating biopolymer structure assembly in these confined spaces. From these studies it is hoped not only to gain valuable insights into the fascinating variation of structural colors in biology but also to develop novel synthesis approaches for complex bioinspired photonic materials for advanced optical and optoelectronic applications.BROADER IMPACTS: A central mission of the proposed activities is the integration of research and educational efforts at several levels. In collaboration with a local high school, integration will be pursued through an "adopt-a-class" approach, where we will involve and guide students in science projects related to nanomaterials, light and energy. This will be accomplished through mutual visits several times a year and an email/internet "science hotline." It is anticipated that the discoveries and results from these projects will be publicly displayed at the Utah Science Day and in the form of a temporary installation at the Utah Museum of Natural History. At the undergraduate level, integration will be achieved through the installment of a "special" experiment (in addition to typical "designed" teaching experiments) in the PI's undergraduate lab course, where for several days students will perform "real world" research side-by-side with the PI's graduate students. At the graduate level the new students selected will be specifically trained in the interdisciplinary aspects of this proposal, including training on the PI?s optical spectroscopy lab facility and on other campus facilities (TEM, SEM, AFM, etc.). Special efforts will be focused on the recruitment and involvement of minority and female trainees. In addition, the proposed research will gain new insights into biological structure formation and thus has enormous potential in photonic materials engineering via novel biomimetic fabrication routes. Photonic structures promise breakthroughs in energy and information technology and therefore promise to deeply impact our society in everyday life.

ID：MPS/DMR/BMAT（7623）1005382 PI：Bartl，Michael ORG：犹他大学标题：生物启发周期性组织光子结构的制造智力优势：在许多昆虫的彩色结构中，颜色是通过光与昆虫外骨骼中周期性有序的低折射率和高折射率结构相互作用产生的光干涉产生的。 这种结构色最近被用作光子晶体，在下一代能源和信息技术应用中具有潜在的影响。 虽然目前可见光波段的光子工程能力相当有限，但生物系统已经进化到创造出最复杂的光子架构结构，这些结构仍然远远超出了我们的合成范围。 拟议的研究是针对这些生物结构，并专注于获得详细的见解光子结构的形成/组装机制的生物系统和开发仿生路线的制造新型三维有序的电介质材料的光子应用。PI将对虹彩甲虫的光子结构进行高分辨率的结构研究，以揭示精确的晶格及其组装环境。 从这些结果中，他将开发仿生结构形成实验，以研究生物聚合物化合物在溶液组成，表面活性剂型分子的存在和组装/相分离机制（成核和生长与spinodal分解）方面的组装化学和物理学。 他还将联合收割机这些生物聚合物的形成与空间限制效应的研究。 我们的目标是模仿三维有限的组装室在许多甲虫（外骨骼规模），通过制造微隔间和调查生物聚合物结构组装在这些密闭的空间。 从这些研究中，我们不仅希望获得对生物学中结构色的迷人变化的有价值的见解，而且希望为先进的光学和光电应用开发复杂的生物光子材料的新合成方法。更广泛的意义：拟议活动的一个中心使命是在几个层面上整合研究和教育工作。 与当地一所高中合作，将通过“采用课堂”的方法进行整合，我们将让学生参与并指导与纳米材料、光和能源有关的科学项目。这将通过每年几次的互访和电子邮件/互联网“科学热线”来实现。" 预计这些项目的发现和结果将在犹他州科学日公开展示，并以临时装置的形式在犹他州自然历史博物馆展出。 在本科阶段，整合将通过在PI的本科实验室课程中安装“特殊”实验（除了典型的“设计”教学实验）来实现，在那里学生将与PI的研究生一起进行为期几天的“真实的世界”研究。 在研究生一级，新的学生选择将专门培训的跨学科方面的这一建议，包括培训的PI？的光谱实验室设施和其他校园设施（TEM，SEM，AFM等）。 将作出特别努力，重点招聘少数民族和女性受训人员并让他们参与。 此外，拟议的研究将获得对生物结构形成的新见解，因此通过新颖的仿生制造路线在光子材料工程中具有巨大的潜力。 光子结构有望在能源和信息技术方面取得突破，因此有望在日常生活中深刻影响我们的社会。