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Author: search.filters.author.Yoshimori, K.Subject: search.filters.subject.Graphene

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    Item type:Publication,
    The investigation of thermal effect on dynamical shape changing of solder paste by using double-view digital holography
    (2015-01-01)
    Thong-On, T.
    ;
    Prakobsang, T.
    ;
    Pethsanthad, W.
    ;
    Boonsri, C.
    ;
    Plaipichit, S.
    In this paper we propose a modern technique to evaluate the shape changes of solder paste by using double-view in-line digital holography. We observed the transformation of three different kinds of solder paste composition: pure solder paste, solder paste mixed with 0.02%, 0.05%, 0.10% graphene (GPN) and 0.02%, 0.05%, 0.10% graphene oxide (GPNO), respectively. The shape of the solder pastes was investigated at different melt temperatures (i.e. 200°C, 250°C, and 300°C) for 30 seconds using a collimated beam propagating through the solder paste, then being double reflected on a mirror and second incident on another sides of the solder paste. The double images bearing beams were recorded with a CCD sensor simultaneously. The single recorded digital hologram from double view technique was reconstructed using digital holography. The results show that the double-view technique provides reliably data. Moreover, it would be developed for observing more than two images by single holography writing in the future.