Laser-driven self-assembly of shape-controlled potassium nanoparticles in porous glass
Authors: Marmugi L., Mariotti E., Burchianti A., Veronesi S., Moi L., Marinelli C.
Autors Affiliation: Department of Physical Sciences, Earth and Environment and CNISM, University of Siena, via Roma 56, 53100 Siena, Italy; Istituto Nazionale di Ottica CNR, UOS “A. Gozzini”, via G. Moruzzi 1, 56124 Pisa, Italy; Istituto Nazionale di Ottica CNR and European Laboratory for NonLinear Spectroscopy (LENS) University of Florence, via N. Carrara 1, 50019, Sesto Fiorentino, Italy; National Enterprise for nanoScience and nanoTechnology (NEST)-Istituto Nanoscienze CNR, Piazza San Silvestro 12, 56127 Pisa, Italy; Department of Physics, University of Pisa, largo B. Pontecorvo 3, 56127 Pisa, Italy
Abstract: We observe the growth of shape-controlled potassium nanoparticles inside a random network of glass nanopores, exposed to low-power laser radiation. Visible laser light plays a dual role: it increases the desorption probability of potassium atoms from the inner glass walls and induces the self-assembly of metastable metallic nanoparticles along the nanopores. By probing the sample transparency and the atomic light-induced desorption flux into the vapour phase, the dynamics of both cluster formation/evaporation and atomic photo-desorption processes are characterized. Results indicate that laser light not only increases the number of nanoparticles embedded in the glass matrix but also influences their structural properties. By properly choosing the laser frequency and the illumination time, we demonstrate that it is possible to tailor the nanoparticles
Journal/Review: LASER PHYSICS LETTERS
Volume: 11 (8) Pages from: 085902 to: 085902
KeyWords: laser-control of atomic transport; nanoparticles self-assembly; nanoporous materialsDOI: 10.1088/1612-2011/11/8/085902Citations: 5data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2019-09-08References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here