Microparticle characterization using digital holography
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...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2010
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| Online Access: | https://hdl.handle.net/10356/91815 http://hdl.handle.net/10220/6495 |
| _version_ | 1826122011003322368 |
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| author | Emmanouil Darakis Taslima Khanam Rajendran, Arvind Kariwala, Vinay Naughton, Thomas J. Anand, Asundi |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Emmanouil Darakis Taslima Khanam Rajendran, Arvind Kariwala, Vinay Naughton, Thomas J. Anand, Asundi |
| author_sort | Emmanouil Darakis |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T05:41:49Z |
| format | Journal Article |
| id | ntu-10356/91815 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:41:49Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | ntu-10356/918152023-03-04T17:14:37Z Microparticle characterization using digital holography Emmanouil Darakis Taslima Khanam Rajendran, Arvind Kariwala, Vinay Naughton, Thomas J. Anand, Asundi School of Mechanical and Aerospace Engineering DRNTU::Engineering::Chemical engineering::Chemical processes 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. Accepted version 2010-12-21T09:20:50Z 2019-12-06T18:12:23Z 2010-12-21T09:20:50Z 2019-12-06T18:12:23Z 2009 2009 Journal Article Emmanouil, D., Taslima, K., Rajendran, A., Kariwala, V., Naughton, T. J., & Anand, A. (2009). Microparticle characterization using digital holography. Chemical Engineering Science, 65(2), 1-34. 0009-2509 https://hdl.handle.net/10356/91815 http://hdl.handle.net/10220/6495 148607 en Chemical engineering science © 2009 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Chemical Engineering Science, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/j.ces.2009.09.057]. 34 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Chemical engineering::Chemical processes Emmanouil Darakis Taslima Khanam Rajendran, Arvind Kariwala, Vinay Naughton, Thomas J. Anand, Asundi Microparticle characterization using digital holography |
| title | Microparticle characterization using digital holography |
| title_full | Microparticle characterization using digital holography |
| title_fullStr | Microparticle characterization using digital holography |
| title_full_unstemmed | Microparticle characterization using digital holography |
| title_short | Microparticle characterization using digital holography |
| title_sort | microparticle characterization using digital holography |
| topic | DRNTU::Engineering::Chemical engineering::Chemical processes |
| url | https://hdl.handle.net/10356/91815 http://hdl.handle.net/10220/6495 |
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