caa a22 4500 477093884 CHVBK 20180405111522.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF00189054 doi (NATIONALLICENCE)springer-10.1007/BF00189054 Image shifting for PIV using birefringent and ferroelectric liquid crystals [Elektronische Daten] [L. Bertuccioli, S. Gopalan, J. Katz] This paper discusses a new implementation of electrooptical image shifting, used to resolve directional ambiguity in particle image velocimetry (PIV) measurements. The setup uses a ferroelectric liquid crystal (FLC) as a polarization rotator and a birefringent calcite plate as a shifter. The system can be used with non-polarized light sources and fluorescent particles. The minimum shifting time (pulse separation) is approximately 100 μs. This compact electrooptical device is usually positioned in front of the camera lens, though it has also been mounted inside the lens body. Sample vector maps from a turbulent multidirectional flow are included. Springer-Verlag, 1996 Bertuccioli L. Department of Mechanical Engineering, The Johns Hopkins University, Latrobe Hall, 122 3400 N. Charies St., 21218, Baltimore, Maryland, USA aut Gopalan S. Department of Mechanical Engineering, The Johns Hopkins University, Latrobe Hall, 122 3400 N. Charies St., 21218, Baltimore, Maryland, USA aut Katz J. Department of Mechanical Engineering, The Johns Hopkins University, Latrobe Hall, 122 3400 N. Charies St., 21218, Baltimore, Maryland, USA aut Experiments in Fluids Springer-Verlag 21/5(1996-09-01), 341-346 0723-4864 21:5<341 1996 21 348 https://doi.org/10.1007/BF00189054 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00189054 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bertuccioli L. Department of Mechanical Engineering, The Johns Hopkins University, Latrobe Hall, 122 3400 N. Charies St., 21218, Baltimore, Maryland, USA aut NATIONALLICENCE 700 1- Gopalan S. Department of Mechanical Engineering, The Johns Hopkins University, Latrobe Hall, 122 3400 N. Charies St., 21218, Baltimore, Maryland, USA aut NATIONALLICENCE 700 1- Katz J. Department of Mechanical Engineering, The Johns Hopkins University, Latrobe Hall, 122 3400 N. Charies St., 21218, Baltimore, Maryland, USA aut NATIONALLICENCE 773 0- Experiments in Fluids Springer-Verlag 21/5(1996-09-01), 341-346 0723-4864 21:5<341 1996 21 348 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer