title: Segmented metal nanowires as nanoscale thermocouples.
abstract: 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 ω is applied on the wires while monitoring the resulting thermoelectric voltage V(TH) at 2ω 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 ω.
authors.affiliation: Department of Chemical Physics, School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel.
authors.forename: E
authors.initials: E
authors.lastname: Shapira
authors.forename: D
authors.initials: D
authors.lastname: Marchak
authors.forename: A
authors.initials: A
authors.lastname: Tsukernik
authors.forename: Y
authors.initials: Y
authors.lastname: Selzer