An experimental investigation of three-dimensional particle aggregation using digital holographic microscopy

Tamrin, K. F. and Rahmatullah, B. and Samuri, S. M. (2015) An experimental investigation of three-dimensional particle aggregation using digital holographic microscopy. Optics and Lasers in Engineering, 68. pp. 93-103. ISSN 0143-8166

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The tendency of particles to aggregate depends on particle-particle and particle-fluid interactions. These interactions can be characterized but it requires accurate 3D measurements of particle distributions. We introduce the application of an off-axis digital holographic microscopy for measuring distributions of dense micrometer (2 μm) particles in a liquid solution. We demonstrate that digital holographic microscopy is capable of recording the instantaneous 3D position of particles in a flow volume. A new reconstruction method that aids identification of particle images was used in this work. About 62% of the expected number of particles within the interrogated flow volume was detected. Based on the 3D position of individual particles, the tendency of particle to aggregate is investigated. Results show that relatively few particles (around 5–10 of a cohort of 1500) were aggregates. This number did not change significantly with time.

Item Type: Article
Uncontrolled Keywords: Three-dimensional microscopy, Three-dimensional image processing, Digital holography, Microscopy, Aggregation, research, Universiti Malaysia Sarawak, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Academic Faculties, Institutes and Centres > Faculty of Engineering
Faculties, Institutes, Centres > Faculty of Engineering
Depositing User: Karen Kornalius
Date Deposited: 25 Sep 2017 04:02
Last Modified: 25 Sep 2017 04:02

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