Scientific Results

Pulsed laser desorption of alkali atoms from PDMS thin films

Year: 2004

Authors: Brewer J., Burchianti A., Marinelli C., Mariotti E., Moi L., Rubahn K., Rubahn H.-G.

Autors Affiliation: Fysisk Institut, Syddansk Universitet, Campusvej 55, DK-5230 Odense M, DenmarkbInstitute of Physics, University of Siena, Siena, Italy

Abstract: The dynamics of short pulsed laser-induced desorption of alkali atoms from poly-dimethylsiloxane (PDMS) coated glass prism surfaces is investigated. Kinetic energies of desorbing sodium atoms of several hundred meV are found, increasing with increasing laser fluence. Evanescent wave measurements suggest that the desorbed atoms stem from a subsurface layer of the PDMS film, resulting in diffusional characteristics for the total yield of the desorption process.


Volume: 228 (1-4)      Pages from: 40  to: 47

KeyWords: Deposition; Desorption; Diffusion; Electromagnetic fields; Electromagnetic waves; Kinetic energy; Light polarization; Mathematical models; Pulsed laser applications; Silicones; Surface chemistry; Thin films, Laser fluence; Light-induced atom desorption (LIAD); Poly-dimethylsiloxane (PDMS) thin films; Pulsed laser desorption; Alkali metals
DOI: 10.1016/j.apsusc.2003.12.024

Citations: 19
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