Detection of Modulated Terahertz Radiation Using Combined Plasma and Mechanical Resonances in Double-Carbon-Nanotube Device
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概要
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We propose a resonant detector of terahertz radiation modulated by megahertz or gigahertz signals. The detector is based on mechanically floating carbon nanotubes (CNTs), suspended over an insulator. The device operation is associated with the excitation of both plasma and mechanical oscillations in CNTs resulting in an ac displacement current between them. This current plays the role of the detector output signal. Using the proposed device model, we find that the frequency dependence of the detector responsivity exhibits a sharp peak at the combined plasma-mechanical resonance and estimate its maximum value.
- 2011-07-25
著者
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LEIMAN Vladimir
Department of General Physics, Moscow Institute of Physics and Technology
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Ryzhii Victor
Computational Nano-Electronics Laboratory, University of Aizu, Aizuwakamatsu, Fukushima 965-8580, Japan
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Stebunov Yury
Department of General Physics, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia
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Arsenin Aleksey
Department of General Physics, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia
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Gladun Anatoly
Department of General Physics, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia
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Semenenko Viacheslav
Department of General Physics, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia
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