Detection and Quantized Conductance of Neutral Atoms Near a Charged Carbon Nanotube
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https://doi.org/10.1103/PhysRevLett.94.066102Metadata
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Ristroph, Trygve, Anne Goodsell, J. A. Golovchenko, and Lene Vestergaard Hau. 2005. “Detection and Quantized Conductance of Neutral Atoms Near a Charged Carbon Nanotube.” Physical Review Letters 94 (6) (February). doi:10.1103/physrevlett.94.066102.Abstract
We describe a novel single atom detector that uses the high electric field surrounding a charged single-walled carbon nanotube to attract and subsequently field-ionize neutral atoms. A theoretical study of the field-ionization tunneling rates for atomic trajectories in the attractive potential near a nanowire shows that a broadly applicable, high spatial resolution, low-power, neutral-atom detector with nearly 100% efficiency is realizable with present-day technology. Calculations also show that the system can provide the first opportunity to study quantized conductance phenomena when detecting cold neutral atoms with mean velocities less than 15 m/s.Other Sources
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