title: Vanadium dioxide nanowire-based microthermometer for quantitative evaluation of electron beam heating.
abstract: Temperature measurement is critical for many technological applications and scientific experiments, and different types of thermometers have been developed to detect temperature at macroscopic length scales. However, quantitative measurement of the temperature of nanostructures remains a challenge. Here, we show a new type of microthermometer based on a vanadium dioxide nanowire. Its mechanism is derived from the metal-insulator transition of vanadium dioxide at 68 °C. As our results demonstrate, this microthermometer can serve as a thermal flow meter to investigate sample heating from the incident electron beam using a transmission electron microscope. Owing to its small size the vanadium dioxide nanowire-based microthermometer has a large measurement range and high sensitivity, making it a good candidate to explore the temperature environment of small spaces or to monitor the temperature of tiny, nanoscale objects.
authors.affiliation: 1] Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA [2] National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors.forename: H
authors.initials: H
authors.lastname: Guo
authors.affiliation: Department of Mechanical Engineering, University of California, Berkeley, California 94720, USA.
authors.forename: M I
authors.initials: MI
authors.lastname: Khan
authors.affiliation: Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA.
authors.forename: C
authors.initials: C
authors.lastname: Cheng
authors.affiliation: Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA.
authors.forename: W
authors.initials: W
authors.lastname: Fan
authors.affiliation: Department of Mechanical Engineering, University of California, Berkeley, California 94720, USA.
authors.forename: C
authors.initials: C
authors.lastname: Dames
authors.affiliation: Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA.
authors.forename: J
authors.initials: J
authors.lastname: Wu
authors.affiliation: 1] Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA [2] National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors.forename: A M
authors.initials: AM
authors.lastname: Minor