title: Tracing temperature in a nanometer size region in a picosecond time period.
abstract: Irradiation of materials with either swift heavy ions or slow highly charged ions leads to ultrafast heating on a timescale of several picosecond in a region of several nanometer. This ultrafast local heating result in formation of nanostructures, which provide a number of potential applications in nanotechnologies. These nanostructures are believed to be formed when the local temperature rises beyond the melting or boiling point of the material. Conventional techniques, however, are not applicable to measure temperature in such a localized region in a short time period. Here, we propose a novel method for tracing temperature in a nanometer region in a picosecond time period by utilizing desorption of gold nanoparticles around the ion impact position. The feasibility is examined by comparing with the temperature evolution predicted by a theoretical model.
authors: Department of Micro Engineering, Kyoto University, Kyoto 615-8540, Japan.
authors: Kaoru
authors: K
authors: Nakajima
authors: Department of Micro Engineering, Kyoto University, Kyoto 615-8540, Japan.
authors: Takumi
authors: T
authors: Kitayama
authors: Department of Micro Engineering, Kyoto University, Kyoto 615-8540, Japan.
authors: Hiroaki
authors: H
authors: Hayashi
authors: Nuclear Science Research Institute, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan.
authors: Makoto
authors: M
authors: Matsuda
authors: Nuclear Science Research Institute, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan.
authors: Masao
authors: M
authors: Sataka
authors: Institute for Integrated Cell-Material Sciences, Kyoto University, Kyoto 606-8501, Japan.
authors: Masahiko
authors: M
authors: Tsujimoto
authors: CIMAP-GANIL (CEA-CNRS-ENSICAEN-Université de Caen Basse Normandie), Bd. H. Becquerel, 14070 Caen, France.
authors: Marcel
authors: M
authors: Toulemonde
authors: CIMAP-GANIL (CEA-CNRS-ENSICAEN-Université de Caen Basse Normandie), Bd. H. Becquerel, 14070 Caen, France.
authors: Serge
authors: S
authors: Bouffard
authors: Department of Micro Engineering, Kyoto University, Kyoto 615-8540, Japan.
authors: Kenji
authors: K
authors: Kimura