Photo-conversion and evolution of one-dimensional Cu nanoparticles under femtosecond laser irradiation

• Published in: Applied surface science 2008-06, Vol.254 (16), p.4992-4998
• Main Authors: Chang, Gang, Shimotsuma, Yasuhiko, Sakakura, Masaaki, Yuasa, Toshirou, Homma, Hidekazu, Oyama, Munetaka, Miura, Kiyotaka, Qiu, Jiarong, Kazansky, Peter G., Hirao, Kazuyuki
• Format: Article
• Language: English
• Subjects: Clusters, nanoparticles, and nanocrystalline materials; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Metal nanowire; Nanoscale materials and structures: fabrication and characterization; Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals; Nucleation growth process; Other topics in nanoscale materials and structures; Physical radiation effects, radiation damage; Physics; Polarization; Structure of solids and liquids; crystallography; Ultrashort pulse laser; Ultraviolet, visible, and infrared radiation effects (including laser radiation)
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2008.01.172

Metal nanowires with electric conductive properties can be useful for optical polarization control medium and electro-conductive nanomaterial. We report on metallic Cu nanowires with a length of 1.0 μm and a diameter of 85 nm which were successfully photo-converted from commercial scale-like Cu particles, dispersed in a methanol solution, by using femtosecond laser irradiation. The growth mechanism of Cu nanowires under laser irradiation was suggested to be a nucleation growth process.