title: Local temperature measurements on nanoscale materials using a movable nanothermocouple assembled in a transmission electron microscope.
abstract: A nanoscale thermocouple consisting of merged Cu and Cu-Ni tips is developed for local temperature measurements on advanced nanomaterials by using a probing technique in a high-resolution transmission electron microscope (TEM) equipped with a double probe scanning tunneling microcopy (STM) unit. The fabricated nanothermocouple works as the so-called T-type thermocouple and displays a quick response and high spatial and thermal resolutions. A generated thermoelectromotive force which reflects rapid temperature changes controlled by electron beam intensity alternations on a metal nanoelectrode proves the technique's usefulness for high-precision local temperature measurements. The developed method demonstrates the effectiveness while also measuring temperature changes in Joule heated multi-walled carbon nanotubes (CNTs) and in a modeled electrical conductive composite nanosystem.
authors.affiliation: International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, Japan. KAWAMOTO.Naoyuki@nims.go.jp
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Kawamoto
authors.forename: Ming-Sheng
authors.initials: MS
authors.lastname: Wang
authors.forename: Xianlong
authors.initials: X
authors.lastname: Wei
authors.forename: Dai-Ming
authors.initials: DM
authors.lastname: Tang
authors.forename: Yasukazu
authors.initials: Y
authors.lastname: Murakami
authors.forename: Daisuke
authors.initials: D
authors.lastname: Shindo
authors.forename: Masanori
authors.initials: M
authors.lastname: Mitome
authors.forename: Dmitri
authors.initials: D
authors.lastname: Golberg