Holographic patterning of fluorescent microstructures comprising silver nanoclusters

Research output: Contribution to journalArticle

Researchers

Research units

  • Tampere University of Technology

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.

Details

Original languageEnglish
Pages (from-to)946-951
Number of pages6
JournalOPTICAL MATERIALS EXPRESS
Volume6
Issue number3
Publication statusPublished - 1 Mar 2016
MoE publication typeA1 Journal article-refereed

    Research areas

  • SPATIAL LIGHT MODULATORS, 2-PHOTON POLYMERIZATION, FABRICATION, PHOTOPOLYMERIZATION, GLASS

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