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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/13314

Title: On measuring 3D flow within inkjet droplet streams using a digital holographic microscope
Authors: Wormald, S. Andrew
Coupland, Jeremy M.
Keywords: Digital holographic microscope
Two-phase flow analysis
Droplet surface reconstruction
Issue Date: 2010
Publisher: © Taylor and Francis
Citation: WORMALD, S.A. and COUPLAND, J.M., 2010. On measuring 3D flow within inkjet droplet streams using a digital holographic microscope. Journal of Modern Optics, 57 (9), pp.700-708.
Abstract: With a view to measuring the internal and external flow fields in an inkjet droplet stream, this paper discusses the problem of imaging through droplet surfaces and more generally interfaces in two-phase flows. First the propagation of optical fields through interfaces between media of different refractive index is discussed with reference to scalar diffraction theory. Some approximations suitable for droplet imaging are then discussed and the use of a-priori information is then explained. The imaging technique is applied to holograms recorded using a digital holographic microscope and is illustrated in the synthesis of a 3D image that is reconstructed through a cylindrical telecommunication fibre. Subsequently we demonstrate for the first time, high resolution imaging throughout an inkjet droplet. The practical implementation and improvement of these imaging methods for the measurement of two-phase flows is then discussed.
Description: This article was accepted for publication in the Journal of Modern Optics and the definitive version is available at: http://dx.doi.org/10.1080/09500340903580781
Version: Accepted for publication
DOI: 10.1080/09500340903580781
URI: https://dspace.lboro.ac.uk/2134/13314
Publisher Link: http://dx.doi.org/10.1080/09500340903580781
ISSN: 0950-0340
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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