Terahertz Response of Unique Composite Metamaterials

具有负介电常数和负磁导率的超材料开辟了一个全新的设备世界，可能会在广泛的学科领域取得突破性的应用。本项目主要研究利用太赫兹光谱技术研究复合亚波长结构的超材料。该项目的长期目标是开发集成和高效的太赫兹电路元件，能够集成到用于航空通信和监视系统、光电子和生物传感的紧凑型平台中。智力优势：提议的计划包括多种研究工作，以开发在太赫兹频率下工作的超材料。最先进的太赫兹光谱技术将用于表征太赫兹超材料的电和磁特性。将探索具有增强磁响应和低损耗的新型超材料构型，以建立太赫兹区域的负折射率。将对超材料在生物传感方面的潜在用途进行概念证明审查。pi还建议探索对电磁辐射表现出瞬时电和磁响应的独特半导体超材料。此外，磁性太赫兹表面等离子体将在二维超材料表面进行研究。更广泛的影响：拟议的项目将促进太赫兹技术和新一代集成光电器件的发展，这将影响广泛的学科，特别是航空航天通信、生物传感和太赫兹成像。pi将继续与工业界合作开发太赫兹元件和微传感器。将为光子学学生开设一门新的研究生课程“超材料导论”。超材料的新主题将在正在进行的？无尘室开放日？提供给高中生，特别是俄克拉何马州印第安人的项目。pi还将与其他同事合作，为K-12学生开发光学科学课程。

ECCS -0725764Weili Zhang, Oklahoma State University Metamaterials, with both negative permittivity and negative permeability, have opened up an entirely new world of devices that may lead to breakthrough applications in a broad range of disciplines. This project focuses on investigation of composite subwavelength-structured metamaterials using techniques of terahertz spectroscopy. The longer-term goal of this program is to develop integrated and efficient terahertz circuit elements capable of being integrated into compact platforms for applications in aerospace communications and surveillance systems, optoelectronics, and biosensing.Intellectual Merit: The proposed program encompasses multiple research efforts to develop metamaterials functioning at terahertz frequencies. The state-of-the-art terahertz spectroscopy technology will be used to characterize the electrical and magnetic properties of terahertz metamaterials. Novel metamaterial configurations with enhanced magnetic response and low loss will be explored to establish negative index of refraction in the terahertz regime. A proof-of-concept examination of potential use of metamaterials in biosensing will be undertaken. The PIs also propose to explore unique semiconductor metamaterials that exhibit instantaneous electric and magnetic response to electromagnetic radiation. Additionally, magnetic terahertz surface plasmons will be investigated at the surface of two-dimensional metamaterials. Broader Impact: The proposed program will enable development of terahertz technology and new generation integrated optoelectronic devices that will impact a broad range of disciplines, particularly aerospace communications, biosensing, and terahertz imaging. The PIs would continue their collaboration with industry in developing terahertz components and microsensors. A new graduate level course, introduction to metamaterials, will be developed for photonics students. New topics in metamaterials will be implemented in an ongoing ?cleanroom open house? program offered to high school students, particularly the Oklahoma Native Americans. The PIs will also team up with other colleagues to develop programs in optical science for K-12 students.