Characterization and surface-enhanced Raman spectral probing of silver hydrosols prepared by two-wavelength laser ablation and fragmentation

0189389 - UMCH-V 20033344 RIV GB eng J - Journal Article
Šmejkal, P. - Šišková, K. - Vlčková, B. - Pfleger, Jiří - Šloufová, Ivana - Šlouf, Miroslav - Mojzeš, P.
Characterization and surface-enhanced Raman spectral probing of silver hydrosols prepared by two-wavelength laser ablation and fragmentation.
Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy. Roč. 59, č. 10 (2003), s. 2321-2329. ISSN 1386-1425. E-ISSN 1873-3557.
[International Conference on Raman Spectroscopy Applied to the Earth Sciences /5./. Prague, 12.06.2002-15.06.2002]
R&D Projects: GA ČR GA203/01/1013
Institutional research plan: CEZ:AV0Z4050913
Keywords : surface-enhanced Raman spectroscopy * silver hydrosols * two-wavelength laser ablation
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.315, year: 2003

A four step Ag foil laser ablation-Ag nanoparticle fragmentation procedure in ultrapure water was carried out both under argon and in air. Pulses of a high power Nd/YAG laser were used for laser ablation and for the three step Ag hydrosol treatment in the absence of Ag foil in the sequence 1064-532-1064 nm. Transmission electron microscopy and surface plasmon extinction spectra provide evidence of Ag nanoparticle fragmentation in the second and third step of the procedure carried out under argon..
Permanent Link: http://hdl.handle.net/11104/0085201