Characterization of Ag nanostructures fabricated by laser-induced dewetting of thin films

被引：31

作者：

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

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

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

Hirsch, D. ^{[2
]}

Rauschenbach, B. ^{[2
]}

Grochowska, K. ^{[3
]}

Sliwinski, G. ^{[3
]}

机构：

[1] Bulgarian Acad Sci, Inst Elect, Tzarigradsko Chaussee 72, BU-1784 Sofia, Bulgaria

[2] Leibniz Inst Surface Modificat IOM, 15 Permoserstr, D-04318 Leipzig, Germany

[3] Polish Acad Sci, Szewalski Inst, Ctr Plasma & Laser Engn, 14 Fiszera St, PL-80231 Gdansk, Poland

来源：

APPLIED SURFACE SCIENCE | 2016年 / 374卷

关键词：

Ag nanostructures; Laser processing; Thin films; SERS; METAL NANOPARTICLES;

D O I：

10.1016/j.apsusc.2015.09.004

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：

The paper presents results on laser nanostructuring of Ag thin films. The thin films are deposited on glass substrates by pulsed laser deposition technology. The as fabricated films are then annealed by nanosecond laser pulses delivered by Nd:YAG laser system operated at lambda = 355 nm. The film modification is studied as a function of the film thickness and the parameters of the laser irradiation as pulse number and laser fluence. In order to estimate the influence of the environment on the characteristics of the fabricated structures the Ag films are annealed in different surrounding media: water, air and vacuum. It is found that at certain conditions the laser treatment may lead to decomposition of the films into a monolayer of nanoparticles with narrow size distribution. The optical properties of the fabricated nanostructures are investigated on the basis of transmission spectra taken by optical spectrometer. In the measured spectra plasmon resonance band is observed as its shape and position vary depending on the processing conditions. The fabricated structures are covered with Rhodamine 6G and tested as active substrates for Surface Enhanced Raman Spectroscopy (SERS). (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：36 / 41

页数：6

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