Holographic patterning of fluorescent microstructures comprising silver nanoclusters

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2016-03-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
6
946-951
Series
OPTICAL MATERIALS EXPRESS, Volume 6, issue 3
Abstract
Metal nanoclusters, which exhibit extraordinary physical and chemical properties that are different from their bulk counterparts, are highly promising nanomaterials for photonics. Recently, the use of twophoton excitation to fabricate silver nanoclusters in polymers was reported but still lacks speed and flexibility which are imperative for applications such as labeling and spectroscopy. Here, we demonstrate the fabrication of fluorescent nanocluster microstructures using spatially phase-shaped laser beams. Using an incident power of 60 mW and exposure time of 8 s, we found that the smallest line-width of the fluorescent microstructures is 478 nm, which is comparable to the line-width achieved with a two-photon laser scanning approach. As a proof-of-principle demonstration, the technique is used to fabricate fluorescent micro-labels that could be used in anticounterfeiting applications.
Description
Keywords
SPATIAL LIGHT MODULATORS, 2-PHOTON POLYMERIZATION, FABRICATION, PHOTOPOLYMERIZATION, GLASS
Other note
Citation
Kunwar , P , Turquet , L , Hassinen , J , Ras , R H A , Toivonen , J & Bautista , G 2016 , ' Holographic patterning of fluorescent microstructures comprising silver nanoclusters ' , OPTICAL MATERIALS EXPRESS , vol. 6 , no. 3 , pp. 946-951 . https://doi.org/10.1364/OME.6.000946