# name
Sub-wavelength laser nanopatterning using droplet lenses

# metadata.dc.description.abstract[].value
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.

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Scientific Reports, 2015, vol. 5, num. 16199

# metadata.dc.rights[].value
cc-by-nc-nd (c) Duocastella, M. et al., 2015

# metadata.dc.source[].value
Articles publicats en revistes (Física Aplicada)

# metadata.dc.title[].value
Sub-wavelength laser nanopatterning using droplet lenses