Femtosecond laser ablation of gold in water: influence of the laser-produced plasma on the nanoparticle size distribution

Femtosecond laser radiation has been used to ablate a gold target in pure deionized water to produce gold colloids. The dimensional distribution of nanoparticles is characterized by the simultaneous presence of two distinct particle populations: one with low dispersion, having a mean particle size of 5–20 nm, and one with high dispersion, having a much larger particle size. By changing the target position with respect to the radiation focus, we study the influence of the plasma formed after the laser pulse in front of the target, during nanofabrication process. We show that the most intense plasma is produced by positioning the target slightly before the geometric focal point. Here, the plasma intensity was found to correlate with the amount of ablated material as well as with the mean size of nanoparticles associated with the second, highly dispersed, distribution of nanoparticles; this suggests the involvement of plasma-related processes in the ablation of material, and the formation of relatively large particles. The thermal heating of the target by the plasma, and its mechanical erosion by the collapse of a plasma-induced cavitation bubble are discussed as possible ablation mechanisms. The gold nanoparticles produced in ultrapure water are of importance for biosensing applications.

[1]  David B. Geohegan,et al.  Time-resolved imaging of gas phase nanoparticle synthesis by laser ablation , 1998 .

[2]  Chen-Sheng Yeh,et al.  Laser ablation method: use of surfactants to form the dispersed Ag nanoparticles , 2002 .

[3]  Michel Meunier,et al.  Stabilization and size control of gold nanoparticles during laser ablation in aqueous cyclodextrins. , 2004, Journal of the American Chemical Society.

[4]  T. Kondow,et al.  Formation of Gold Nanoparticles by Laser Ablation in Aqueous Solution of Surfactant , 2001 .

[5]  M. Tsuji,et al.  Preparation of nano-size particles of silver with femtosecond laser ablation in water , 2003 .

[6]  G. A. Shafeev,et al.  Nanodisks of Au and Ag produced by laser ablation in liquid environment , 2001 .

[7]  Olga G. Kosareva,et al.  Femtosecond laser pulse filamentation versus optical breakdown in H2O , 2003 .

[8]  A. A. Seraphin,et al.  Gas phase synthesis and processing of silicon nanocrystallites: Characterization by photoluminescence emission spectroscopy , 1994 .

[9]  Marek Procházka,et al.  Laser ablation: Preparation of “chemically pure” Ag colloids for surface-enhanced Raman scattering spectroscopy , 1997 .

[10]  Michel Meunier,et al.  Synthesis of colloidal nanoparticles during femtosecond laser ablation of gold in water , 2003 .

[11]  M. Pileni,et al.  Synthesis of copper metallic clusters using reverse micelles as microreactors , 1993 .

[12]  D. Hammer,et al.  Laser-induced breakdown in aqueous media , 1997 .

[13]  T. Kondow,et al.  Structure and Stability of Silver Nanoparticles in Aqueous Solution Produced by Laser Ablation , 2000 .

[14]  T. Kondow,et al.  Formation and Size Control of Silver Nanoparticles by Laser Ablation in Aqueous Solution , 2000 .

[15]  V. Voronov,et al.  Nanoparticles produced by laser ablation of solids in liquid environment , 2002 .

[16]  Yoshihiro Takeda,et al.  Formation of Stable Platinum Nanoparticles by Laser Ablation in Water , 2003 .

[17]  G. Chumanov,et al.  Laser Ablation of Metals: A New Method for Preparing SERS Active Colloids , 1993 .

[18]  U. Parlitz,et al.  Energy balance of optical breakdown in water at nanosecond to femtosecond time scales , 1999 .

[19]  M. Tsuji,et al.  Preparation of silver nanoparticles by laser ablation in solution: influence of laser wavelength on particle size , 2002 .

[20]  David A. Schultz,et al.  Plasmon resonant particles for biological detection. , 2003, Current opinion in biotechnology.

[21]  Michel Meunier,et al.  Fabrication and Characterization of Gold Nanoparticles by Femtosecond Laser Ablation in an Aqueous Solution of Cyclodextrins , 2003 .

[22]  See Leang Chin,et al.  BAND-GAP DEPENDENCE OF THE ULTRAFAST WHITE-LIGHT CONTINUUM , 1998 .

[23]  J. Szejtli.  Introduction and General Overview of Cyclodextrin Chemistry. , 1998, Chemical reviews.

[24]  A. Henglein,et al.  Formation of Nanometer‐Size Silicon Particles in a Laser Induced Plasma in SiH4 , 1993 .

[25]  Studies of Silver Nanoparticles by Laser Ablation Method , 1998 .