Terahertz Response of Unique Composite Metamaterials

ECCS-0725764张伟立，俄克拉荷马州立大学超材料，具有负介电常数和负磁导率，开辟了一个全新的器件世界，可能导致在广泛学科中的突破性应用。本项目致力于利用太赫兹光谱技术研究亚波长结构的复合超材料。该计划的长期目标是开发集成和高效的太赫兹电路元件，能够集成到紧凑的平台中，应用于航空航天通信和监视系统、光电子学和生物传感。智力优势：拟议的计划包括多项研究工作，以开发具有太赫兹频率功能的超材料。最先进的太赫兹光谱技术将被用来表征太赫兹超材料的电磁特性。将探索具有增强的磁响应和低损耗的新型超材料构型，以在太赫兹区域建立负折射率。将对超材料在生物传感中的潜在用途进行概念验证审查。PI还建议探索独特的半导体超材料，这些材料对电磁辐射具有瞬时的电磁响应。此外，还将在二维超材料表面研究磁性太赫兹表面等离子激元。更广泛的影响：拟议的计划将促进太赫兹技术和新一代集成光电子器件的开发，这些设备将影响广泛的学科，特别是航空航天通信、生物传感和太赫兹成像。PIS将继续与工业界在开发太赫兹组件和微型传感器方面进行合作。将为光子学专业的学生开设一门新的研究生水平课程--超材料导论。超材料的新主题将在正在进行的洁净室开放参观中实施？为高中生，特别是俄克拉荷马印第安人提供的课程。PIS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.