Optically Trapped Surface-Enhanced Raman Probes Prepared by Silver Photoreduction to 3D Microstructures

Gaszton Vizsnyiczai, Tamás Lestyán, Jaroslava Joniova, Badri L. Aekbote, Alena Strejčková, Pál Ormos, Pavol Miskovsky, Lóránd Kelemen, Gregor Bánó

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

3D microstructures partially covered by silver nanoparticles have been developed and tested for surface-enhanced Raman spectroscopy (SERS) in combination with optical tweezers. The microstructures made by two-photon polymerization of SU-8 photoresist were manipulated in a dual beam optical trap. The active area of the structures was covered by a SERS-active silver layer using chemically assisted photoreduction from silver nitrate solutions. Silver layers of different grain size distributions were created by changing the photoreduction parameters and characterized by scanning electron microscopy. The structures were tested by measuring the SERS spectra of emodin and hypericin.

Original languageEnglish
Pages (from-to)10087-10093
Number of pages7
JournalLangmuir
Volume31
Issue number36
DOIs
Publication statusPublished - Sep 15 2015

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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    Vizsnyiczai, G., Lestyán, T., Joniova, J., Aekbote, B. L., Strejčková, A., Ormos, P., Miskovsky, P., Kelemen, L., & Bánó, G. (2015). Optically Trapped Surface-Enhanced Raman Probes Prepared by Silver Photoreduction to 3D Microstructures. Langmuir, 31(36), 10087-10093. https://doi.org/10.1021/acs.langmuir.5b01210