1. Unit startpage
  2. Employees
  3. Roman Zakoldaev
Bilde av Zakoldaev, Roman
Bilde av Zakoldaev, Roman
Postdoctoral Research Fellow / Ultrasound, microwaves and optics Department of Physics and Technology roman.zakoldaev@uit.no You can find me here

Roman Zakoldaev

Job description

Designing photonic components and laser technologies for spectroscopic analysis, with a focus on detecting gases and biomolecules at ultra-low concentrations.

  • Jehona Salaj, Marek Vlk, Roman Zakoldaev, Ragnar Seton, Jiří Čtyroký, Sebastian Alberti et al.:
    Suspended nanophotonic waveguide for isotope-specific CO2 detection
    Optica 2024 ARKIV / DOI
  • Henock Demessie Yallew, Marek Vlk, Anurup Datta, Sebastian Alberti, Roman Zakoldaev, Jens Høvik et al.:
    Sub-ppm Methane Detection with Mid-Infrared Slot Waveguides
    ACS Photonics 2023 ARKIV / DOI
  • Jehona Salaj, Roman Zakoldaev, Ragnar Alexander Seton, Marek Vlk, Astrid Aksnes, Jana Jagerska :
    Isotope ratio measurements using on-chip laser absorption spectroscopy
    2024
  • Jehona Salaj, Marek Vlk, Roman Zakoldaev, Jens Høvik, Astrid Aksnes, Jana Jagerska :
    On-chip spectroscopy with membrane waveguides at low pressure
    2023

    • The 50 latest publications is shown on this page. See all publications in Cristin here →

    Publications outside Cristin

    Google Scholar: click me

    Interesting to check out:

    1. A nanophotonic waveguide was developed to detect CO₂ at one molecule per billion with isotope ratio precision matching high-end instruments, advancing climate and bio-science applications.

    Jehona Salaj, Marek Vlk, Roman Zakoldaev, Ragnar Seton, Jiri Ctyroky, Sebastian Alberti, Astrid Aksnes and Jana Jágerská. Suspended Nanophotonic Waveguide for Isotope-Specific CO₂ Detection OPTICA - 2024

    2. We developed a nanophotonic waveguide achieving 0.3 ppm methane detection, surpassing current on-chip spectroscopy limits and enabling highly sensitive, reliable sensors for climate and industry.

    Yallew HD, Vlk M, Datta A, Alberti S, Zakoldaev RA, Høvik J, Aksnes A, Jágerská J. Sub-ppm Methane Detection with Mid-Infrared Slot Waveguides ACS photonics - 2023

    3. We demonstrated femtosecond laser writing of optofluidic elements in a nanoporous silicate matrix, enabling barriers, waveguides, and microchannels with precise control over geometry and functionality.

    Shishkina A.S., Yandybaeva Y.I., Yakimuk V.A., Alsaif Y., Zakoldaev, R.A. Direct Laser Writing and Investigation of Optofluidic Elements inside Nanoporous Silicate Matrix Optics and Spectroscopy - 2023

    Research interests

    My research focuses on photonics, laser technologies and nanomaterials. I developed a method for inscribing nanofluidic elements, resulting in a patented photonic gas sensor.

    Within my team in 'Direct Laser Writing in Glass' we pushed the boundaries of sub-micron structuring for applications in augmented reality, microfluidics, and bulk waveguides.

    Since moving above the Arctic Circle, I have been advancing waveguide-based sensors for greenhouse gases. Recently, our team demonstrated a nanophotonic waveguide engineered to ‘localize light in air,’ enabling CO₂ detection at the level of a single molecule in a billion and achieving the first real-time stable isotope ratio measurements.

    Currently, I'm working on the pphotonics biosensing platform for protein analysis. This technology aims to transform how protein misfolding is monitored, providing earlier and more reliable Alzheimer's diagnoses.

    I’m excited to welcome collaborators to join me on this journey. 

    Find me on LinkedIn: click here

     

    ResearchGate
    ORCID: https://orcid.org/0000-0001-6212-0532

    Member of research group

    Ultrasound, Microwaves and Optics   Norsk innhold

    CV

    EDUCATION
    2015 – 2018
    Ph.D. in Quantum Electronics
    Project:
    Laser modification of porous glass: physical and technological fundamentals and applications

    2013 – 2015
    MS in Laser technologies
    Project:
    Laser micro-plasma for micro-optical elements fabrication

    2009 – 2013
    BS Technical Physics
    Project:
    Laser-induced internal modification of porous glass