Journal
NANOTECHNOLOGY
Volume 19, Issue 12, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/19/12/125501
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Segmented Au-Ni nanowires are demonstrated to be highly effective thermocouples with a spatial resolution of a few nanometers and a temporal resolution in the microsecond range. The performance of the devices is characterized by a self-heating procedure in which an ac heating current with frequency. is applied on the wires while monitoring the resulting thermoelectric voltage V-TH at 2 omega. using a lock-in technique. An analytical model is developed that enables one to determine the time response of the thermocouples from plots of V-TH as a function of omega.
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