MURAL - Maynooth University Research Archive Library



    Microparticle characterization using digital holography


    Darakis, Emmanouil and Khanam, Taslima and Rajendran, Arvind and Kariwala, Vinay and Naughton, Thomas J. and Asundi, Anand K. (2010) Microparticle characterization using digital holography. Chemical Engineering Sciences, 65 (2). pp. 1037-1044. ISSN 0009-2509

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    Abstract

    Digital holography is an effective 3D imaging technique, with the potential to be used for particle size measurements. A digital hologram can provide reconstructions of volume samples focused at different depths, overcoming the focusing problems encountered by other imaging based techniques. Several particle analysis methods discussed in the literature consider spherical particles only. With the object sphericity assumption in place, analysis of the holographic data can be significantly simplified. However, there are applications, such as particle analysis and crystallization monitoring, where non-spherical particles are often encountered. This paper discusses the processing of digital holograms for particle size and shape measurement for both spherical and arbitrarily shaped particles. An automated algorithm for identification of particles from recorded hologram and subsequent size and shape measurement is described. Experimental results using holograms of spherical and non-spherical particles demonstrate the performance of the proposed measuring algorithm.

    Item Type: Article
    Keywords: Particle; Particulate processes; Crystallization; Digital holography; Particle size; Image processing;
    Academic Unit: Faculty of Science and Engineering > Computer Science
    Faculty of Science and Engineering > Research Institutes > Hamilton Institute
    Item ID: 12384
    Identification Number: https://doi.org/10.1016/j.ces.2009.09.057
    Depositing User: Thomas Naughton
    Date Deposited: 07 Feb 2020 15:26
    Journal or Publication Title: Chemical Engineering Sciences
    Publisher: Elsevier
    Refereed: Yes
    URI:

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