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Title: Transmission electron microscopy assisted in-situ joule heat dissipation study of individual InAs nanowires

Managing heat transport at nanoscale is an important and challenging task for nanodevice applications and nanostructure engineering. Herein, through in-situ engineering nanowire (NW)-electrode contacts with electron beam induced carbon deposition in a transmission electron microscope, Joule heat dissipation along individual suspended Indium Arsenide NWs is well managed to obtain pre-designed temperature profiles along NWs. The temperature profiles are experimentally determined by the breakdown site of NWs under Joule heating and breakdown temperature measurement. A model with NW-electrode contacts being well considered is proposed to describe heat transport along a NW. By fitting temperature profiles with the model, thermal conductance at NW-electrode contacts is obtained. It is found that, the temperature profile along a specific NW is mainly governed by the relative thermal conductance at the two NW-electrode contacts, which is engineered in experiments.
Authors:
; ; ;  [1]
  1. Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
22254126
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 19; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; BREAKDOWN; CARBON; COOLING; DEPOSITION; ELECTRODES; ELECTRON BEAMS; ENERGY LOSSES; HEAT TRANSFER; INDIUM; INDIUM ARSENIDES; JOULE HEATING; QUANTUM WIRES; TEMPERATURE MEASUREMENT; THERMAL DIFFUSIVITY; THERMAL EFFLUENTS; TRANSMISSION ELECTRON MICROSCOPY