Terahertz Plasmonics and Nano-Carbon Electronics for Nano-Micro Sensing and Imaging
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- Deng Xiangying
- Department of Electrical and Electronic Engineering, Tokyo Institute of Technology
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- Kawano Yukio
- Department of Electrical and Electronic Engineering, Tokyo Institute of Technology Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology
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Abstract
<p>Sensing and imaging with THz waves is an active area of modern research in optical science and technology. There have been a number of studies for enhancing THz sensing technologies. In this paper, we review our recent development of THz plasmonic structures and carbon-based THz imagers. The plasmonic structures have strong possibilities of largely increasing detector sensitivity because of their outstanding properties of high transmission enhancement at a subwavelength aperture and local field concentration. We introduce novel plasmonic structures and their performance, including a Si-immersed bull’s-eye antenna and multi-frequency bull’s-eye antennas. The latter part of this paper explains carbon-based THz detectors and their applications in omni-directional flexible imaging. The use of carbon nanotube films has led to a room-temperature, flexible THz detector and has facilitated the visualization of samples with three-dimensional curvatures. The techniques described in this paper can be used effectively for THz sensing and imaging on a micro- and nano-scale.</p>
Journal
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- International Journal of Automation Technology
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International Journal of Automation Technology 12 (1), 87-96, 2018-01-05
Fuji Technology Press Ltd.
