Laboratory of Sensor Technologies
The laboratory carries out research on sensors based on low-dimensional materials. We prepare and study different types of sensor materials and structures, develop related measurement techniques and prototypes for various applications.
- We design and study very sensitive 2D materials by functionalizing single layer graphene in the process of pulsed laser deposition. The aim is to develop portable air quality sensors and electronic noses, which have a low power consumption.
- We study the gas responses of optical materials and nanostructures (photoluminescence, optical resonances, strongly coupled systems) for novel gas sensing principles and applications.
- We study and model the gas sensing mechanisms and develop advanced measurement methods (based on modulation and lock-in techniques), in order to improve the sensitivity, selectivity, speed and stability of the sensors.
People
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Raivo Jaaniso Head of Lab Associate Professor in Materials Science and Applied Physics E-mail: raivo.jaaniso@ut.ee Phone: +372 737 4731 Room: C205 CV, projects: ETIS Publications: Publons, Google Scholar, Scopus Supervision: UT DSpace |
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Margus Kodu Research Fellow in Material Science, PhD (materials science) E-mail: margus.kodu@ut.ee Phone: +372 737 4711 Room: C204 CV, projects: ETIS Publications: Scopus |
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Valter Kiisk Associate Professor in Spectroscopy of Sensor Materials, PhD (solid state physics) E-mail: valter.kiisk@ut.ee Phone: +372 737 4742 Room: D307 CV, projects: ETIS Publications: Publons, Google Scholar, Scopus Supervision: UT DSpace |
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Siim Pikker Associate Professor in Micro- and Nano-Optics, PhD (physics) E-mail: siim.pikker@ut.ee Room: D415 CV, projects: ETIS Publications: Scopus |
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Taavi Repän Associate Professor of Computational Photonics E-mail: taavi.repan@ut.ee Room: C202 CV, projects: ETIS
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| Koit Mauring Associate Professor E-mail: koit.mauring@ut.ee Phone: +372 737 4737 Room: D320 CV, projects: ETIS Publications: Scopus Supervision: UT DSpace |
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| Indrek Renge Research Fellow, PhD (chemistry) E-mail: indrek.renge@ut.ee Room: C203 CV, projects: ETIS Publications: Scopus |
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Tea Avarmaa Research Fellow, PhD (chemistry) E-mail: tea.avarmaa@ut.ee Phone: +372 737 4711, +372 737 4790 Room: C204, D315 CV, projects: ETIS Publications: Scopus |
| Artjom Berholts PhD student, MSc (materials science) E-mail: artjom.berholts@ut.ee Phone: +372 737 4711 Room: C204 CV, projects: ETIS Publications: Scopus |
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| Martin Lind PhD student, MSc (physics) E-mail: martin.lind@ut.ee Room: C203 CV, projects: ETIS |
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Paniz Vafaei Junior Research Fellow in Physics, PhD student, MSc (technology) E-mail: paniz.vafaei@ut.ee CV, projects: ETIS |
| Dmitri Lanevski PhD student, MSc (physics) E-mail: dmitri.lanevski@ut.ee CV, projects: ETIS |
Equipment
Setup for electrical and optical gas sensor characterization. The computer-controlled measurement complex includes gas mixing stations (based on Brooks mass flow controllers), Keithley sourcemeters for electrical measurements and an optical spectrometer for optical measurements. Available special gases include O3, CO, CO2, NH3, H2S, SO2, NO2 (ppb-to-ppm range), which can be tested in the background of Ar, N2, O2, or their arbitrary mixtures with the relative humidity between 0 and 90%. The majority of test gases are 5N purity and fed from cylinders; ozone is generated before mixing.
Setup for pulsed laser deposition of thin films includes two UHV deposition chambers, UV excimer laser (Coherent COMPexPro 205,
wavelength 248 nm), and equipment for in-situ process monitoring (Woollam M2000x spectroscopic ellipsometer, Andor Echelle spectrograph for plasma spectroscopy).
- Marko Eltermann, 2019
- Margus Kodu, 2011
- Jaanus Eskusson, 2009
