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Oklahoma State University

Terahertz metamaterials research receives a new award from National Science Foundation

Professor Weili Zhang and Professor John O'Hara (Co-Pi) were recently awarded total $490K along with the Northwestern collaborator from the National Science Foundation to carry out investigations of three-dimensional metamaterials functioning at terahertz frequencies.

The proposed research program will develop a synergetic approach that incorporates transformation optics theory, metamaterial design using the effective media approximation, scalable three-dimensional fabrication technologies, and a method of experimental validation to explore a range of novel terahertz optical components, including transformation-optics-enabled aberration free terahertz imaging lens and an integrated terahertz spectroscopy platform. The ultimate goal of this project is to initiate new possibilities for a variety of much needed terahertz applications with unprecedented functionalities. The proposed three-dimensional terahertz metamaterials concept and integrated research protocol can be further extended to the broad electromagnetic spectrum for stealth technology, advanced communication systems, medical imaging, and remote sensing.

The Zhang group initiated their research in terahertz metamaterials at OSU in 2003 and has pioneered the use of terahertz time-domain spectroscopy in characterizing the electromagnetic properties of such unique composite structures (Optics Letters 2006, 31, 634). Recently, Prof. Zhang and colleagues have reported the first experimental demonstration of invisibility cloaking in the terahertz regime (Scientific Reports 2011, 1, 78) and the large-dimension homogenous terahertz cloaking (Advanced Materials 2012, 24, 916).