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Antenna-Coupled Nanowire Thermocouples for Infrared Detection

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5 Author(s)
Gergo P. Szakmany ; Center for Nano Science and Technology, Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN, USA ; Peter M. Krenz ; Alexei O. Orlov ; Gary H. Bernstein
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Unbiased, uncooled, and frequency-selective antenna-coupled nanowire thermocouples have been fabricated out of different metal combinations and characterized for infrared detection. The relative Seebeck coefficient of the nanowire thermocouples was measured with a characterization platform, which is colocated on the same chip as the detectors. The area of the hot junction of the nanowire thermocouple is approximately 75 nm × 75 nm. The antenna-coupled thermocouples show polarization dependence with a maximum normalized detectivity (D*) of 1.94 × 105 cm · √Hz/W.

Published in:

IEEE Transactions on Nanotechnology  (Volume:12 ,  Issue: 2 )