Size reduction of gold particles in aqueous solution by pulsed laser irradiation

被引：229

作者：

Kurita, H ^{[1
]}

Takami, A ^{[1
]}

Koda, S ^{[1
]}

机构：

[1] Univ Tokyo, Sch Engn, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 113, Japan

来源：

APPLIED PHYSICS LETTERS | 1998年 / 72卷 / 07期

关键词：

D O I：

10.1063/1.120894

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

When the gold particles produced by the chemical reduction of hydrogen chloroaurate solution were irradiated by the second harmonic of a pulsed Nd:Yag laser (532 nm), their diameter was reduced from more than several deca-nm to less than 20 nm. At the same time, the shape of the particles, originally nonspherical, became spherical. This phenomenon was limited to pulsed laser, and is caused by the heating of the particles within the very short time of laser irradiation; the very large absorption cross section of the particles at the plasmon absorption and the thermal insulation of the irradiated particles in water should be responsible. (C) 1998 American Institute of Physics.

引用

页码：789 / 791

页数：3

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