caa a22 4500 463213483 CHVBK 20180405153149.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s00339-007-4131-5 doi (NATIONALLICENCE)springer-10.1007/s00339-007-4131-5 Generation of Ag nanospikes via laser ablation in liquid environment and their activity in SERS of organic molecules [Elektronische Daten] [S. Lau Truong, G. Levi, F. Bozon-Verduraz, A.V. Petrovskaya, A.V. Simakin, G.A. Shafeev] The formation of dense arrays of nanospikes occurs under laser ablation of bulk silver immersed in liquids such as water or ethanol. The average height of spikes is 50nm and their density on the target amounts to 1010cm-2. This effect is observed with sufficiently short laser pulses. In particular, either a 350ps or a 90ps Nd:YAG lasers are used operating in their fundamental harmonics. These nanospikes are characterized by UV-visible reflection spectrometry and atomic force microscopy. The oscillations of electrons within Ag nanospikes results in a permanent coloration of the surface and a modification of the optical reflection spectra of the metal. Nanospikes show a peak of plasmon resonance around 380nm, which shifts to the visible range upon oxidation in air. The initial spectrum may be restored by reduction of the oxidized Ag surface through processing in an ammonia aqueous solution. Scanning the laser beam along the metal surface allows its nanostructuring over extended areas (∼1cm2). The nanostructured Ag surface shows enhanced Raman scattering of acridine molecules at a concentration of 10-5M/l, whereas initial Ag target do not show any signal within the accuracy of measurements. Springer-Verlag, 2007 Lau Truong S. ITODYS, UMR-CNRS 7086, Université Paris 7-Denis Diderot, 2, Place Jussieu, 75251, Paris Cedex 05, France aut Levi G. ITODYS, UMR-CNRS 7086, Université Paris 7-Denis Diderot, 2, Place Jussieu, 75251, Paris Cedex 05, France aut Bozon-Verduraz F. ITODYS, UMR-CNRS 7086, Université Paris 7-Denis Diderot, 2, Place Jussieu, 75251, Paris Cedex 05, France aut Petrovskaya A.V. Wave Research Center of A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, 119991, Moscow, Russia aut Simakin A.V. Wave Research Center of A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, 119991, Moscow, Russia aut Shafeev G.A. Wave Research Center of A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, 119991, Moscow, Russia aut Applied Physics A Springer-Verlag 89/2(2007-11-01), 373-376 0947-8396 89:2<373 2007 89 339 https://doi.org/10.1007/s00339-007-4131-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-4131-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lau Truong S. ITODYS, UMR-CNRS 7086, Université Paris 7-Denis Diderot, 2, Place Jussieu, 75251, Paris Cedex 05, France aut NATIONALLICENCE 700 1- Levi G. ITODYS, UMR-CNRS 7086, Université Paris 7-Denis Diderot, 2, Place Jussieu, 75251, Paris Cedex 05, France aut NATIONALLICENCE 700 1- Bozon-Verduraz F. ITODYS, UMR-CNRS 7086, Université Paris 7-Denis Diderot, 2, Place Jussieu, 75251, Paris Cedex 05, France aut NATIONALLICENCE 700 1- Petrovskaya A.V. Wave Research Center of A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Simakin A.V. Wave Research Center of A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, 119991, Moscow, Russia aut NATIONALLICENCE 700 1- Shafeev G.A. Wave Research Center of A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, 119991, Moscow, Russia aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 89/2(2007-11-01), 373-376 0947-8396 89:2<373 2007 89 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer