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http://hdl.handle.net/2445/101709
Title: | Sub-wavelength laser nanopatterning using droplet lenses |
Author: | Duocastella, Martí Florian Baron, Camilo Serra Coromina, Pere Diaspro, Alberto |
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 |
URI: | http://hdl.handle.net/2445/101709 |
Related resource: | http://dx.doi.org/10.1038/srep16199 |
ISSN: | 2045-2322 |
Appears in Collections: | Articles publicats en revistes (Física Aplicada) |
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655944.pdf | 1.14 MB | Adobe PDF | View/Open |
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