Holographic patterning of fluorescent microstructures comprising silver nanoclusters

Puskal Kunwar*, Leo Turquet, Jukka Hassinen, Robin H A Ras, Juha Toivonen, Godofredo Bautista

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
112 Downloads (Pure)

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.

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

Keywords

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

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