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- Park, Hyeong‐Ryeol
- Laboratory for Ultrafast & Nanoscale Plasmonics
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Electrical control of terahertz nano antennas on VO2 thin film
- Author(s)
- Jeong, Young-Gyun, Bernien, Hannes, Kyoung, Ji-Soo, Park, Hyeong-Ryeol, Kim, Hyun-Sun, Choi, Jae-Wook, Kim, Bong-Jun, Kim, Hyun-Tak, Ahn, Kwang Jun, Kim, Dai-Sik
- Issued Date
- 2011-10
- Citation
- OPTICS EXPRESS, v.19, no.22, pp.21211 - 21215
- Abstract
- We demonstrate an active metamaterial device that allows to electrically control terahertz transmission over more than one order of magnitude. Our device consists of a lithographically defined gold nano antenna array fabricated on a thin film of vanadium dioxide (VO2), a material that possesses an insulator to metal transition. The nano antennas let terahertz (THz) radiation funnel through when the VO2 film is in the insulating state. By applying a dc-bias voltage through our device, the VO2 becomes metallic. This electrically shorts the antennas and therefore switches off the transmission in two distinct regimes: reversible and irreversible switching.
- Publisher
- OPTICAL SOC AMER
- ISSN
- 1094-4087
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