ID 97848
Title Transcription
コウIF ロンブン ジュリ オ メザシタ ヒカリ ナノ テクノロジー ケンキュウ ネットワーク ケイセイ
Title Alternative
Opt-nanotechnology Network for Publishing High Impact factor Papers
Author
Hashimoto, Shuichi Department of Ecosystem Engineering Institute of Technology and Science The University of Tokushima Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Keywords
gold nanoparticle
LSPR
fragmentation
laser
photothermal response
Content Type
Departmental Bulletin Paper
Description
We made various attempts to publish high impact factor papers. Here we describe such efforts
and research activities carried out in fiscal year 2010. As a research, pulsed laser-induced
morphological transformation and size-reduction of colloidal gold nanoparticles in the aqueous
phase were investigated using transient absorption spectroscopy and transmission electron
microscopy (TEM). Femtosecond laser-induced fragmentation of gold nanoparticles within 100
ps after the laser pulse is interpreted in terms of the Coulomb explosion mechanism. On the
other hand, nanosecond laser-induced size-reduction of gold nanoparticles is in good agreement
with the photothermal evaporation mechanism that is based on heating of particles to
temperatures above the boiling point of gold (3100 K). Here, the experimentally observed
fragmentation thresholds were well-reproduced by simulations based on electron and lattice
temperature models and by considering the dissipation of heat into the surrounding medium. The
numerical method described herein has the advantage of identifying the fragmentation
mechanism by considering pulse duration- and energy-dependent thresholds.
Journal Title
徳島大学大学院ソシオテクノサイエンス研究部研究報告
ISSN
21859094
NCID
AA12214889
Volume
57
Start Page
1
End Page
8
Sort Key
1
Published Date
2012
FullText File
language
jpn
departments
Science and Technology