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- Title
Production and photofragmentation of Au nanoparticles by 355 nm picosecond radiation.
- Authors
Giorgetti, E.; Giusti, A.; Giammanco, F.; Marsili, P.
- Abstract
Fifth generation ethylendiamine-core poly(amidoamine) (PAMAM G5)-capped-gold-nanoparticles were prepared by ps laser ablation in water, by using the third harmonic of a ps Nd:YAG laser. Post-irradiation with the same wavelength causes efficient photofragmentation of the nanoparticles. We performed a comparison with analogous tests carried out with 532 nm ps pulses. We found that, while 532-nm-fragmentation is a 2-photon photoelectric process, 355-nm-fragmentation is linear.
- Subjects
NANOPARTICLES; NANOSTRUCTURED materials; LASER ablation; PHOTONS; MANUFACTURING processes
- Publication
Optics & Spectroscopy, 2009, Vol 107, Issue 3, p474
- ISSN
0030-400X
- Publication type
Article
- DOI
10.1134/S0030400X09090288