Time-resolved visualization of the heat flow in VO2/Al 2O3 films

J. S. Lee, M. Ortolani, U. Schade, Y. J. Chang, T. W. Noh

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The authors performed resistance switching of a VO2 film grown on the Al2 O3 substrate by applying electric pulses. As a consequence, Joule heat of about 1 W has been induced in a 15×50 μ m2 area between the two electrodes. Using synchrotron-based infrared microspectroscopy, the authors mapped the propagation of Joule heat around the electrodes with a micrometric spatial resolution and in a submicrosecond time scale. They found that the experimental observations are well described by the Fourier law of heat conduction demonstrating the possibility of local temperature control in a micrometric length scale.

Original languageEnglish
Article number051907
JournalApplied Physics Letters
Issue number5
StatePublished - 2007


Dive into the research topics of 'Time-resolved visualization of the heat flow in VO2/Al 2O3 films'. Together they form a unique fingerprint.

Cite this