@article{fd56359a508b497cb013cf0c5874e57f,
title = "A nanoscale Ti/GaAs metal-semiconductor hybrid sensor for room temperature light detection",
abstract = "We report an individually addressable Ti/GaAs metal-semiconductor hybrid optical nanosensor with positive photoresistance and a sensitivity that increases as the device dimensions shrink. The underlying physics relates to the crossover from ballistic to diffusive transport of the photoinduced carriers and the geometric enhancement of the effect associated with a Schottky-barrier-coupled parallel metal shunt layer. For a 250 nm device under 633 nm illumination we observe a specific detectivity of D* =5.06× 1011 cm Hz/W with a dynamic response of 40 dB.",
author = "Newaz, {A. K M} and Chang, {W. J.} and Wallace, {K. D.} and Edge, {L. C.} and Wickline, {S. A.} and R. Bashir and Gilbertson, {A. M.} and Cohen, {L. F.} and Solin, {S. A.}",
note = "Funding Information: This work is supported by the U.S. NIH (Grant No. 1U54CA11934201), the U.S. NSF (Grant No. ECCS-0725538), and the UK EPSRC (Grant No. EP/F065922). W.J.C. was partially supported from the ERC for Advanced Bioseparation Technology, KOSEF, Korea. S.A.S. and S.A.W. are cofounders of and have a financial interest in PixelEXX, Inc., a start-up company whose mission is to market imaging arrays. K.D.W. and A.K.M.N. also have a financial interest in PixelEXX.",
year = "2010",
month = aug,
day = "23",
doi = "10.1063/1.3480611",
language = "English (US)",
volume = "97",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "8",
}