How long does it take to melt a gold nanorod? A femtosecond pump-probe absorption spectroscopic study

被引：132

作者：

Link, S ^{[1
]}

Burda, C ^{[1
]}

Nikoobakht, B ^{[1
]}

El-Sayed, MA ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Chem & Biochem, Laser Dynam Lab, Atlanta, GA 30332 USA

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 315卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(99)01214-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Using pump-probe femtosecond transient absorption spectroscopy, we determined the rate of the bleach of absorption around 700-800 nm due to the longitudinal surface plasmon band of gold nanorods. Using TEM of the spotted, completely irradiated solutions suggest that the dominant products of the photothermal conformation of the rods are spheres of comparable volume. This lead to the conclusion that the melting of the rods is at least 30-35 ps, independent of the power used (5-20 mu J) or the nanorod aspect ratio (1.9-3.7). (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：12 / 18

页数：7

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