Wormald Coupland On measuring 3D flow within inkjet droplet streams.doc (749.5 kB)
On measuring 3D flow within inkjet droplet streams using a digital holographic microscope
journal contribution
posted on 2013-10-10, 10:28 authored by S. Andrew Wormald, Jeremy CouplandJeremy CouplandWith 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.
History
School
- Mechanical, Electrical and Manufacturing Engineering
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.Publisher
© Taylor and FrancisVersion
- AM (Accepted Manuscript)
Publication date
2010Notes
This article was accepted for publication in the Journal of Modern Optics and the definitive version is available at: http://dx.doi.org/10.1080/09500340903580781ISSN
0950-0340Publisher version
Language
- en