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Escorcia Carranza, Ivonne; Grant, James P.; Gough, John; Cumming, David (2017)
Publisher: Institute of Electrical and Electronics Engineers
Languages: English
Types: Article
Subjects:
We present the design and fabrication of terahertz (THz) metamaterial (MM) absorbers and their monolithic integration into a commercial CMOS technology along with its respective readout electronics to produce a low-cost, uncooled and high resolution THz camera. We first describe the work done on single band and broadband MM absorbers on custom substrates then progress with a description of the integration of such resonators into a six metal layer 180 nm CMOS process and its coupling with two types of microbolometer sensors: vanadium oxide (VOx) and silicon (Si) pn diode. Additionally, we demonstrate the integration of the THz sensors with readout electronics to form a monolithic THz focal plane array (FPA). Reflection images of a metallic object hidden in a manila envelope are recorded using both the VOx and Si pn diode detectors, demonstrating the suitability of the technology for stand-off detection of concealed objects. Lastly, we present the current work towards scaling this technology into a 64 x 64 FPA.
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    • [29] 2016. (Online). Available: http://dx.doi.org/10.5525/gla.researchdata.354 Ivonne Escorcia Carranza (M '08) received the B.E. degree from John Brown University, Siloam Springs, AR, USA, in 2007, the M.S.E.E. degree from the University of Arkansas, Fayetteville, AR, USA, in 2010, and the Ph.D. degree in electronics and electrical engineering from the University of Glasgow, Glasgow, U.K., in 2015. She is currently a Research Assistant in the School of Engineering, University of Glasgow, working with the Microsystem Technology group. She is the Lead Researcher in the design and characterization of CMOS THz detectors. Her research interests include mixed-signal IC design, CMOS sensors and THz imaging. She is a member of the Eta Kappa Nu.
    • James P. Grant received the B.Sc. and Ph.D. degrees in physics from the University of Glasgow, Glasgow, U.K, in 2002 and 2006, respectively. He is currently a Postdoctoral Research Fellow in the School of Engineering, University of Glasgow, where his research interests include nanofabrication, metamaterial devices; plasmonics, terahertz systems, sensors and imaging and CMOS electronics.
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