Optical response of alkali metal atoms confined in nanoporous glass

Year: 2014

Authors: Burchianti A., Marinelli C., Mariotti E., Bogi A., Marmugi L., Giomi S., Maccari M., Veronesi S., Moi L.

Autors Affiliation: CNISM, DSFTA, University of Siena, via Roma 56, 53100 Siena, Italy; NEST, Physics Department, University of Pisa, Largo Bruno Pontecorvo 3, 56127 Pisa, Italy

Abstract: We study the influence of optical radiation on adsorption and desorption processes of alkali metal atoms confined in nanoporous glass matrices. Exposure of the sample to near-IR or visible light changes the atomic distribution inside the glass nanopores, forcing the entire system to evolve towards a different state. This effect, due to both atomic photodesorption and confinement, causes the growth and evaporation of metastable nanoparticles. It is shown that, by a proper choice of light characteristics and pore size, these processes can be controlled and tailored, thus opening new perspectives for fabrication of nanostructured surfaces.


Volume: 44 (3)      Pages from: 263  to: 268

KeyWords: Alkali metals; Desorption; Metal nanoparticles; Organic coatings, Adsorption and desorptions; Alkali metal atoms; Atomic distribution; Laser induced desorption; Nanostructured surface; Optical radiations; Porous glass; Surface plasmons, Glass
DOI: 10.1070/QE2014v044n03ABEH014774

Citations: 2
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