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Controllable femtosecond laser‐induced dewetting for plasmonic applications
Author(s) -
Makarov Sergey V.,
Milichko Valentin A.,
Mukhin Ivan S.,
Shishkin Ivan I.,
Zuev Dmitry A.,
Mozharov Alexey M.,
Krasnok Alexander E.,
Belov Pavel A.
Publication year - 2016
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201500119
Subject(s) - dewetting , femtosecond , materials science , plasmon , laser , fabrication , optoelectronics , lithography , thin film , nanostructure , nanotechnology , optics , physics , medicine , alternative medicine , pathology
Dewetting of thin metal films is one of the most widespread method for functional plasmonic nanostructures fabrication. However, simple thermal‐induced dewetting does not allow to control degree of nanostructures order without additional lithographic process steps. Here we propose a novel method for lithography‐free and large‐scale fabrication of plasmonic nanostructures via controllable femtosecond laser‐induced dewetting. The method is based on femtosecond laser surface pattering of a thin film followed by a nanoscale hydrodynamical instability, which is found to be very controllable under specific irradiation conditions. We achieve control over degree of nanostructures order by changing laser irradiation parametrs and film thickness. This allowed us to exploit the method for the broad range of applications: resonant light absorbtion and scattering, sensing, and potential improving of thin‐film solar cells.