Offer no. 5/18

Platform, i.e. detection / identification of microorganisms, especially bacteria, and spectroelectrochemical measurements using the surface enhanced Raman technique (SERS), how it is prepared, its use and measurements using such a platform

• Summary:

  The subject of beverages is the test platform, i.e. detection / identification of microorganisms, especially bacteria, and spectroelectrochemical measurements using the surface enhanced Raman technique (SERS), how it is prepared, its use and measurements using such a platform.

  The platform is based on a photovoltaic cell covered with a metallic layer. Photovoltaic cells induced by silicon covered with a thin layer of silicon nitride (anti-reflective layer). On the surface of silicon nitride there are electrical contacts (upper electrode) Made of high-conductive metal (eg silver), which can serve as a place for applying electrical potential during the time of spectroelectrochemical measurements. The developed platform is characterized by a high SERS amplification factor (10⁸). High repeatability (RSD <5%) and stability of recorded signals for both tested chemicals and microorganisms.

• Inventors:
  Agnieszka Michota - Kamińska, Evelin Witkowska, Dorota Korsak, Joanna Trzcińska-Danielewicz, Agnieszka Girstun, Krzysztof Niciński, Tomasz Szymborski
• Advantages / Innovative aspects:

  Development of a new class of SERS-active substrates, which:

  • allow to obtain high Raman signal gain coefficients,
  • will be universal, i.e. they will enable the measurement of both biological (eg bacteria) and non-biological samples,
  • will allow direct deposition of bacteria from liquids, i.e. plasma, urine or water, so that there is no need to transfer them from the liquid to the SERS substrate,
  • will be able to apply in spectroelectrochemical measurments
• Keywords:
  Surface-enhanced Raman scattering (SERS), photovoltaic arrays, SERS platform, detection of microorganisms
• Field:
  • Instruments - Optics
  • Chemistry - Micro-structural and nano-technology
• Usage:
  • Platform for detection of microorganisms
  • Platform for SERS measurements
  • Platform for spectroelectrochemical measurements
• State of the progress:
  stage of prototype
• Intellectual property rights:
  Patent application in Poland

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