Local temperature measurements on nanoscale materials using a movable nanothermocouple assembled in a transmission electron microscope.
Nanotechnology
; 22(48): 485707, 2011 Dec 02.
Article
en En
| MEDLINE
| ID: mdl-22071953
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.
Texto completo:
1
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Nanotechnology
Año:
2011
Tipo del documento:
Article
País de afiliación:
Japón