Gold nanostructures for detection of pesticides, nitrates and drugs using Surface Enhanced Raman Spectroscopy

N. Nedyalkov, Ru Nikov, Ro Nikov, A. Nikolov, P. Atanasov, Y. Nakajima, Mitsuhiro Terakawa, M. Sawczak, K. Grochowska, G. Sliwinski

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    In this work laser-assisted methods for metal nanostructures formation and their application as active substrates in Surface Enhanced Raman Spectroscopy are presented. The nanostructures are fabricated by laser processing of gold thin films deposited on low cost substrates as glass, ceramic, polymer and paper. The films are deposited by classical PLD technology. The produced films are then processed by nanosecond pulses delivered by nanosecond Nd:YAG laser system. At certain conditions the laser treatment leads to formation of discrete nanostructure on the substrate surface. Femtosecond Pulsed Laser Deposition in air is also applied for direct deposition of gold nanostructure. In another set of experiments gold nanoparticle colloids are fabricated by laser ablation of gold target in chloroform. The fabricated structures are then tested as active systems in SERS, as detection of pesticides (DDT), nitrates (NH4NO3), and drugs (Methylene blue) is demonstrated. The obtained results show that these nanostructures can be efficiently used in the detection and monitoring of materials with a high social impact.

    Original languageEnglish
    Title of host publication19th International Conference and School on Quantum Electronics: Laser Physics and Applications
    PublisherSPIE
    Volume10226
    ISBN (Electronic)9781510609532
    DOIs
    Publication statusPublished - 2017
    Event19th International Conference and School on Quantum Electronics: Laser Physics and Applications, ICSQE 2016 - Sozopol, Bulgaria
    Duration: 2016 Sep 262016 Sep 30

    Other

    Other19th International Conference and School on Quantum Electronics: Laser Physics and Applications, ICSQE 2016
    CountryBulgaria
    CitySozopol
    Period16/9/2616/9/30

    Keywords

    • Laser nanostructuring
    • SERS application

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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