Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/101709
Title: Sub-wavelength laser nanopatterning using droplet lenses
Author: Duocastella, M.
Florian, C.
Serra Coromina, Pere
Diaspro, A.
Keywords: Làsers
Òptica
Lasers
Optics
Issue Date: 2015
Publisher: Nature Publishing Group
Abstract: When a drop of liquid falls onto a screen, e.g. a cell phone, the pixels lying underneath appear magnified. This lensing effect is a combination of the curvature and refractive index of the liquid droplet. Here, the spontaneous formation of such lenses is exploited to overcome the diffraction limit of a conventional laser direct-writing system. In particular, micro-droplets are first laser-printed at user-defined locations on a surface and they are later used as lenses to focus the same laser beam. Under conditions described herein, nanopatterns can be obtained with a reduction in spot size primarily limited by the refractive index of the liquid. This all-optics approach is demonstrated by writing arbitrary patterns with a feature size around 280 nm, about one fourth of the processing wavelength.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1038/srep16199
It is part of: Scientific Reports, 2015, vol. 5, num. 16199
Related resource: http://dx.doi.org/10.1038/srep16199
URI: http://hdl.handle.net/2445/101709
ISSN: 2045-2322
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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