A new photothermal detection scheme based on a current-change in photothermally-enhanced electrochemical reaction is proposed and demonstrated. Nondestructive imaging of surface defects fabricated on a metal plate, immersed in an electrolyte, has been performed with a focused laser beam and detection apparatus of photoacoustic microscope (PAM). An imaging under the environment of electrolyte based on the principle of the detection was carried out with two- and tree terminal configurations, these results were compared with that obtained with conventional photoacoustic (PA) imaging.


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    Title :

    Nondestructive evaluation of surface defects by the use of photothermal electrochemical imaging


    Contributors:

    Conference:

    Optical Engineering for Sensing and Nanotechnology (ICOSN '99) ; 1999 ; Yokohama,Japan


    Published in:

    Publication date :

    1999-05-07





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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