Processing condition influence on the characteristics of gold nanoparticles produced by pulsed laser ablation in liquids

被引：10

作者：

Nikov, R. G. ^{[1
]}

Nikolov, A. S. ^{[1
]}

Nedyalkov, N. N. ^{[1
]}

Atanasov, P. A. ^{[1
]}

Alexandrov, M. T. ^{[2
]}

Karashanova, D. B. ^{[3
]}

机构：

[1] Bulgarian Acad Sci, Inst Elect, BU-1784 Sofia, Bulgaria

[2] Bulgarian Acad Sci, Inst Expt Pathol & Parasitol, BU-1113 Sofia, Bulgaria

[3] Bulgarian Acad Sci, Inst Opt Mat & Technol, BU-1113 Sofia, Bulgaria

来源：

APPLIED SURFACE SCIENCE | 2013年 / 274卷

关键词：

Au nanoparticles; Nanowires; Nanosecond laser ablation; Aqueous colloids; Chain fragmentation; Optical extinction spectra; NANOSIZED PARTICLES; OPTICAL-PROPERTIES; SIZE-REDUCTION; CANCER; WATER; NANOTECHNOLOGY; ENVIRONMENT; CHEMISTRY; NANORODS; THERAPY;

D O I：

10.1016/j.apsusc.2013.02.118

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：

A study is presented of Au nanoparticles (NPs) created by nanosecond pulsed laser ablation of a solid target in double distilled water. The influence was examined of the laser wavelength on the size, shape and optical properties of the resulting NPs. Three different wavelengths: the fundamental (lambda = 1064 nm), second (lambda(SHG) = 532) and third (lambda(THG) = 355) harmonic of a Nd:YAG laser at the same fluence were utilized to produce various colloids. Ablation at the wavelength of 532 nm was investigated in more detail to reveal the influence of self-absorption by the already created NPs on their characteristics. The colloid produced was irradiated by lambda(irrad) = 532 nm (laser energy 40 mJ) at different times up to 25 min after the end of ablation. The initial structure of welded NPs forming wires was modified. Transmission electron microscopy and optical transmission measurements were used to evaluate the shape and size distribution of the NPs. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：105 / 109

页数：5

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