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

Vizsnyiczai, Gaszton and Lestyán, Tamás and Joniova, Jaroslava and Aekbote Lakshman Rao, Badri and Strejčková, A. and Ormos, Pál and Kelemen, Lóránd (2015) Optically Trapped Surface-Enhanced Raman Probes Prepared by Silver Photoreduction to 3D Microstructures. LANGMUIR, 31 (36). pp. 1-38. ISSN 0743-7463


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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. © 2015 American Chemical Society.

Item Type: Article
Uncontrolled Keywords: SILVER; Two photon polymerization; Trapped surfaces; Surface enhanced Raman spectroscopy; SU-8 photoresist; Silver nitrate solutions; Silver nanoparticles; Grain Size Distribution; 3D microstructures; scanning electron microscopy; Raman spectroscopy; Photoresists; Optical Tweezers; Microstructure; Metallographic microstructure; Grain size and shape
Subjects: Q Science / természettudomány > Q1 Science (General) / természettudomány általában
Depositing User: MTMT SWORD
Date Deposited: 13 Oct 2015 09:27
Last Modified: 13 Oct 2016 23:15

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