Thin films of silver nanoparticles deposited in vacuum by pulsed laser ablation using a YAG:Nd laser

被引：68

作者：

Alonso, J. C. ^{[1
]}

Diamant, R. ^{[1
]}

Castillo, P. ^{[1
]}

Acosta-Garcia, M. C. ^{[1
]}

Batina, N. ^{[1
]}

Haro-Poniatowski, E. ^{[1
]}

机构：

[1] Univ Autonoma Metropolitana Iztapalapa, Div Ciencias Basicas & Ingn, Mexico City 09340, DF, Mexico

来源：

APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 09期

关键词：

Silver; Nanoparticles; Laser; Ablation; Films; Deposition; SURFACE-PLASMON RESONANCE; ENHANCED RAMAN-SCATTERING; METAL NANOPARTICLES; OPTICAL-PROPERTIES; AG FILMS; DEPENDENCE; SILICON; SIZE; ENVIRONMENT; PARTICLES;

D O I：

10.1016/j.apsusc.2008.12.040

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：

We report the deposition of thin films of silver (Ag) nanoparticles by pulsed laser ablation in vacuum using the third line (355 nm) of a YAG:Nd laser. The nanostructure and/or morphology of the films was investigated as a function of the number of ablation pulses, by means of transmission electron microscopy and atomic force microscopy. Our results show that films deposited with a small number of ablation pulses (500 or less), are not continuous, but formed of isolated nearly spherical Ag nanoparticles with diameters in the range from 1 nm to 8 nm. The effect of increasing the number of pulses by one order of magnitude (5000) is to increase the mean diameter of the globular nanoparticles and also the Ag areal density. Further increase of the number of pulses, up to 10,000, produces the formation of larger and anisotropic nanoparticles, and for 15,000 pulses, quasi-percolated Ag films are obtained. The presence of Ag nanoparticles in the films was also evidenced from the appearance of a strong optical absorption band associated with surface plasmon resonance. This band was widened and its peak shifted from 425 nm to 700 nm as the number of laser pulses was increased from 500 to 15,000. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：4933 / 4937

页数：5

共 46 条

[41] OPTICAL NONLINEARITIES OF A HIGH-CONCENTRATION OF SMALL METAL PARTICLES DISPERSED IN GLASS - COPPER AND SILVER PARTICLES [J].

UCHIDA, K ;

KANEKO, S ;

OMI, S ;

HATA, C ;

TANJI, H ;

ASAHARA, Y ;

IKUSHIMA, AJ ;

TOKIZAKI, T ;

NAKAMURA, A .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1994, 11 (07) :1236-1243

[42] Laser-assisted surface modification of thin chromium films [J].

Willis, DA ;

Xu, XF ;

Poon, CC ;

Tam, AC .

OPTICAL ENGINEERING, 1998, 37 (03) :1033-1041

[43] Surface plasmon resonance of sputtered Ag films: substrate and mass thickness dependence [J].

Xu, G ;

Tazawa, M ;

Jin, P ;

Nakao, S .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2005, 80 (07) :1535-1540

[44] Nanometer-sized silicon crystallites prepared by excimer laser ablation in constant pressure inert gas [J].

Yoshida, T ;

Takeyama, S ;

Yamada, Y ;

Mutoh, K .

APPLIED PHYSICS LETTERS, 1996, 68 (13) :1772-1774

[45] Formation of nanostructures upon laser ablation of silver in liquids [J].

Zavedeev, E. V. ;

Petrovskaya, A. V. ;

Simakin, A. V. ;

Shafeev, G. A. .

QUANTUM ELECTRONICS, 2006, 36 (10) :978-980

[46] Underwater laser ablation approach to fabricating monodisperse metallic nanoparticles [J].

Zhu, X. P. ;

Suzuki, Tsuneo ;

Nakayama, Tadachika ;

Suematsu, Hisayuki ;

Jiang, Weihua ;

Niihara, Koichi .

CHEMICAL PHYSICS LETTERS, 2006, 427 (1-3) :127-131

← 1 2 3 4 5 →