Lech Hasse - Publikacje - MOST Wiedzy

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  • AUTOMATED SYSTEM FOR FLUCTUATION ENHANCED GAS SENSING

    Resistance gas sensors exhibit random phenomena (resistance noise) which can be utilized to improve gas sensitivity and selectivity. That new emerging technique has to be investigated to recognize optimal parameters for gas detection. It means that a measurement system has to have ability of numerous parameters adjustment (e.g., sampling frequency, heater voltage, polarization current, voltage noise amplification). That fact induced...

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  • Fluctuation enhanced gas sensing using UV irradiated Au-nanoparticle-decorated WO3-nanowire films
    Publikacja
    • M. Trawka
    • J. Smulko
    • L. Hasse
    • C. G. Granqvist
    • R. Ionescu
    • F. E. Annanouch
    • E. Llobet
    • L. B. Kish

    - Rok 2014

    WO3 nanowires (WO3-NWs) decorated with gold nanoparticles (AuNPs) were utilized in resistive gas sensor devices to detect ethanol by use of fluctuation enhanced sensing (FES). The experimental system records both DC resistance and fluctuations of the sensing film. Our data verify that the sensitivity and selectivity of the gas sensor are improved by applying FES when the sensor is stimulated with a combination of UV light and heating....

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Rok 2003
Rok 2010
Rok 2009
Rok 2008
  • Diagnostics of high-voltage varistor quality using resonant ultrasound spectroscopy
    Publikacja

    - Rok 2008

    Resonant spectroscopy is an effective nondestructive testing method focused on defects detection in tested objects. Resonance spectrum contains an information about the mechanical properties and particularly about the structural homogeneity of the whole object. A swept frequency method has been used to measure the selected resonant frequencies range. The system for measurement of resonant ultrasound spectroscopy of high-voltage...

Rok 2016

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