標題: Preparation and micropatterning of gold nanoparticles by femtosecond laser-induced optical breakdown
作者: Uwada, Takayuki
Wang, Shun-Fa
Liu, Tsung-Han
Masuhara, Hiroshi
應用化學系
Department of Applied Chemistry
關鍵字: Femtosecond laser;Optical breakdown;Gold nanoparticles;Multiphoton absorption;Micropatterning
公開日期: 1-Sep-2017
摘要: We fabricated gold nanoparticles (NPs) via a femtosecond (fs) laser-induced cavitation bubbling. By introducing intense fs laser pulses into HAuCI4 aqueous solution containing 1-propanol, optical breakdown and the following cavitation bubble generation occurred at the focus through multiphoton absorption of water, resulting in the formation of gold nanoparticles (Au NPs). Intermediate species such as radicals and solvated electrons produced upon the bubbling contribute to gold ion reduction, while direct ionization of Au-chloride complex, photothermal decomposition and direct optical decomposition are excluded as possible mechanisms. Utilizing the fs laser-induced bubbling we demonstrate in-situ micropatterning of Au NPs on a substrate from the same HAuCI4 aqueous solution containing 1-propanol. (C) 2017 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jphotochem.2017.05.051
http://hdl.handle.net/11536/145911
ISSN: 1010-6030
DOI: 10.1016/j.jphotochem.2017.05.051
期刊: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Volume: 346
起始頁: 177
結束頁: 186
Appears in Collections:Articles