Conversion of silver nanoprisms into colloidal nanoparticles induced by femtosecond laser pulses

被引：14

作者：

Zhao, QT ^{[1
]}

Hou, LS

Zhao, CJ

Gu, SP

Huang, R

Ren, SH

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China

[2] Chinese Acad Sci, Photo Craft Project, Shanghai 201800, Peoples R China

[3] Japan Sci & Technol Corp, Shanghai 201800, Peoples R China

来源：

LASER PHYSICS LETTERS | 2004年 / 1卷 / 03期

关键词：

shape conversion; silver nanoprisms; laser irradiation; colloidal nanodots;

D O I：

10.1002/lapl.200310033

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Shape transformation of silver nanoprisms in aqueous solution was studied using femtosecond laser pulses. Irradiation of a pulsed Ti:Sapphire laser at 800 nm caused the shape change of the nanoprisms from triangle into sphere, forming a stable colloid of a narrow size distribution with the particle diameters having similar to10 nm. The effects of laser fluence on fragmentation and conversion were investigated using UV-vis absorption spectroscopy and transmission electron nucroscopy. The mechanism of laser-induced colloid formation is discussed. Absorption spectra of the silver nanoprisms after exposure to 800 nm femtosecond laser pulses for various time lengths.

引用

页码：115 / 117

页数：3

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