CEMRI for Photonic and Multiscale Nanomaterials

密歇根大学光子与多尺度纳米材料中心（C-PHOM）的卓越材料研究与创新中心（CEMRI）专注于开发用于纳米光子学的新型多尺度材料。光与物质的相互作用既可以通过在单纳米尺度上设计材料的电子特性来控制，也可以通过将材料结合到控制光在一小部分光波长的尺度上传播的结构中来控制。被设计成同时访问这些多个长度尺度的材料被称为多尺度材料；它们的发展构成了当今材料研究和光子学中最令人兴奋的前沿之一。中心的活动主要集中在两个跨学科研究小组（IRGs）和一个在多样性、教育和人力资源开发（EHRD）方面的协调项目。IRG1是专门用于量子光发射器的宽带隙纳米结构材料。该计划将开发宽间隙材料，特别是氮化镓基纳米结构，建立具有大带隙和高激子结合能的无机半导体纳米光子结构，用于高效可见光发射器，激光器，能量转换和新型量子器件。研究内容包括氮化镓基纳米结构的外延和合成，其结构、电学和光学特性，在激光光谱和量子光学研究中的应用，强耦合现象的研究，极化激子激光，高效可见led和微腔激光器。这项工作以密歇根大学为中心，合作伙伴是伊利诺伊大学厄巴纳香槟分校和纽约市立大学皇后学院。IRG2的重点是先进的电磁超材料（MM）和近场工具。超材料是纳米结构的混合物，表现为均匀的光学材料，具有自然存在的材料无法达到的电磁特性，如负折射、隐形、等离子体热点和超分辨率。该IRG将研究MM-特别是手性，准周期和双曲MM-以及具有不寻常性质的MM-启发结构，如近场板和超透镜，并发展对通信，传感和成像（特别是亚波长成像）的潜在应用的理解。IRG包括密歇根大学和普渡大学之间的伙伴关系，以及与韦恩州立大学和德克萨斯大学奥斯汀分校的额外合作。两个IRG都包括与国家实验室（桑迪亚和阿贡）和海外机构的广泛互动。CEMRI的中心研究模式的一个关键特征是，它提供了一个框架，将研究与高中、本科、研究生和博士后水平的教育和推广活动紧密结合起来。具体实施的项目包括本科生通过密歇根和国际（“光之城”）本科生研究经验（REU）项目参与CEMRI研究，一个针对来自大量弱势群体入学学校的地区高中生的重点项目，一个招募弱势群体进入高等教育的协调系统，以及一个创业项目，以培养博士生和博士后，并鼓励翻译中心开发的技术。* NSF材料研究科学与工程中心（MRSEC）

AbstractThe Center of Excellence in Materials Research and Innovation* (CEMRI) at the University of Michigan's Photonic and Multiscale Nanomaterials (C-PHOM) Center is focused on developing novel multiscale materials for nanophotonics. Light-matter interactions can be controlled both by engineering the electronic properties of the material on the single-nanometer scale, and by incorporating materials into structures that control the propagation of light on the scale of a fraction of the optical wavelength and longer. Materials that are engineered to simultaneously access these multiple length scales simultaneously are referred to as multiscale materials; their development constitutes one of the most exciting frontiers in materials research and in photonics today. Center activities are focused on two interdisciplinary research groups (IRGs) and a coordinated program in diversity, education, and human resources development (EHRD). IRG1 is dedicated to wide-bandgap nanostructured materials for quantum light emitters. The program will develop wide-gap materials, particularly GaN-based nanostructures, establishing inorganic semiconductor nanophotonic structures with large bandgap and high exciton binding energy for high-efficiency visible light emitters, lasers, energy conversion, and novel quantum devices. The proposed research includes the epitaxy and synthesis of GaN-based nanostructures, their structural, electrical, and optical characterization, their application in laser spectroscopy and quantum optical studies, investigation of strong coupling phenomena, polariton lasing, high-efficiency visible LEDs, and microcavity lasers. This effort is centered at the University of Michigan, with partners at the University of Illinois Urbana Champaign and Queens College CUNY.IRG2 is focused on advanced electromagnetic metamaterials (MM's) and near-field tools. Metamaterials are nanostructured mixtures that behave as homogeneous optical materials with electromagnetic properties unattainable with naturally existing materials, such as negative refraction, cloaking, plasmonic hot spots, and super-resolution. This IRG will investigate MM's - particularly chiral, quasiperiodic and hyperbolic MM's - and MM-inspired structures with unusual properties such as near-field plates and hyperlenses, and develop understanding leading to potential applications in communication, sensing, and imaging (notably sub-wavelength imaging). The IRG consists of a partnership between the University of Michigan and Purdue University, and additional collaborations with Wayne State University and the University of Texas at Austin. Both IRG's include extensive interactions with national labs (Sandia and Argonne) and with overseas institutions.A key feature of the center mode of research in a CEMRI is that it provides a framework for the close integration of research with educational and outreach initiatives, at the high school, undergraduate, graduate, and postdoctoral levels. Specific programs to be implemented include undergraduate involvement in CEMRI research via both a Michigan and an international ("City of Light") research experience for undergraduates (REU) program, a focused program for regional high school students from schools with large underrepresented group enrollment, a coordinated system for recruiting underrepresented groups into higher education, and an entrepreneurship program to train PhD students and postdocs and encourage translation of technology developed in the center.*An NSF Materials Research Science and Engineering Center (MRSEC)