Nanoparticle formation in nanoporous structures and applications
| Autor: | Roberto Cecchi, Nicolò Papi, Cristina Cicali, Simone Caporali, Andrea Vanella, Emilio Mariotti, Rafael Drampyan, A. Khanbekyan, Tigran A. Vartanyan, Leonardo Stiaccini, Carmela Marinelli, I. A. Gladskikh, Francesco Sarri |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanoporous Surface plasmon Ultra-high vacuum technology industry and agriculture Nanoparticle chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Rubidium 010309 optics chemistry Chemical engineering Nanoparticles Nanoporous materials Adsorption and desorption processes Atom–surface interaction Laser spectroscopy Adatoms Desorption 0103 physical sciences Electrical and Electronic Engineering Thin film 0210 nano-technology Porous medium |
| Zdroj: | Optical and Quantum Electronics. 52 |
| ISSN: | 1572-817X 0306-8919 |
| DOI: | 10.1007/s11082-020-2208-y |
| Popis: | In this paper, we present a series of experiments where alkali atoms have been implanted in nanoporous structures, in such a way that, by light, we can induce and control the formation and the destruction of alkali nanoparticles, having slightly different average sizes and shapes: the key role is given by photo-desorption processes (the so called light induced atom desorption and surface plasmon induced desorption effects). The porous materials are both commercial glasses and “home made” thin films of alumina. While the borosilicates, filled by Rubidium, Cesium, Potassium or Sodium, have been studied in dedicated sealed absorption cells, porous alumina samples have been investigated in a Ultra High Vacuum chamber. As an application, the illumination of a porous sample by a structured laser beam, as generated by a conical lens, allows for the preparation of ordered nanoparticle patterns on micrometric scale resolution: these new systems are promising in the growing field of all-optical photonic devices. |
| Databáze: | OpenAIRE |
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