• Gold nanoparticle-coated biomaterial as SERS micro-probes

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      https://www.ias.ac.in/article/fulltext/boms/034/03/0417-0422

    • Keywords

       

      Surface enhanced Raman scattering; micro-probes; biomaterial; plasmonics.

    • Abstract

       

      We report for the first time, on the utility of plant-based biomaterial as enhanced-Raman scattering probes. The bio-substrate used in this study are commonly found in plant extracts, and are cost-effective, mechanically robust, flexible and easily transportable. The probe was fabricated by coating the plant extract with gold nanoparticles and characterized. By employing a ‘single-touch contact’ method, we reveal the ability of these probes to detect routinely used Raman markers such as 2-napthalenethiol and rhodamine B, at nano-molar concentrations, in dry and liquid forms, respectively. Reproducibility of the signals with variation <5%, and the ability to detect biomolecules are demonstrated herein. We envision these bio-probes as potential candidates for enhanced Raman sensing in chemical, environmental, and archaeological applications. By further engineering the shape, morphology, and surface chemistry of these micro-probes, we foresee their utility as miniaturized, natural SERS substrates.

    • Author Affiliations

       

      G V Pavan Kumar1

      1. Division of Physics and Chemistry, Indian Institute of Science Education and Research (IISER), Pune 411 021, India
    • Dates

       
  • Bulletin of Materials Science | News

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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

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