Results 81 to 90 of about 189,960 (270)
Analysis of holographic interferograms of aerodynamic models in a wind tunnel [PDF]
Holographic interferometry provides a non-invasive technique for estimating variations in the air density distribution around aerodynamic models in wind tunnels.
Perry, R. L.
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Digital Holographic Interferometry for Micro-Deformation Analysis of Morpho Butterfly Wing
PhotonicsIn this study, we present an analysis of deflections in a Morpho butterfly wing using digital holographic interferometry (DHI). Our methodology revolves around an off-axis lensless Fourier holographic setup, using laser excitation to induce deflections ...
Ali Mardan Dezfouli +4 more
doaj +1 more source
SoftwareX, 2021 Fringe projection profilometry and off-axis digital holographic interferometry are two techniques commonly used for non-contact optical surface measurement and movement tracking; however, they can be difficult to implement due to the complex software ...
Parsa Omidi +4 more
doaj
IEEE Access, 2019 The presence of the auto correlation and twin cross correlation noises restrict the available spatial bandwidth of the holographic microscopy to much less than the available bandwidth of the digital sensor.
Behnam Tayebi +2 more
doaj +1 more source
Pulsatile microvascular blood flow imaging by short-time Fourier transform analysis of ultrafast laser holographic interferometry [PDF]
arXiv, 2015 We report on wide-field imaging of pulsatile microvascular blood flow in the exposed cerebral cortex of a mouse by holographic interferometry. We recorded interferograms of laser light backscattered by the tissue, beating against an off-axis reference beam with a 50 kHz framerate camera.
arxiv
Scarring in vibrational modes of thin metal plates [PDF]
arXiv, 2000 We report the first direct experimental observation of scarring phenomenon in transverse vibrational modes of a thin metal plate. The plate has the shape of a full stadium and clamped boundary conditions. Normal modes are imaged using time-averaged holographic interferometry, and modes corresponding to ``bouncing ball'' and higher order periodic ...
arxiv
Separate reference beam holographic interferometry and its application to the measurement of small phase variations in sub-fringe systems [PDF]
Application of separate reference beam holographic interferometry for measurement of small phase variations in sub-fringe ...
Testerman, M. K.
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Coherent microscopy and optical coherence tomography for biomedical applications [PDF]
, 2011 This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
3rd Micro and Nano Flows Conference (MNF2011) +1 more
core
IEEE Photonics Journal, 2014 A method of visualizing a paraelectric Mn:KNTN crystal and measuring its Kerr electrooptic coefficient by digital holographic interferometry is presented. Digital holograms of the crystal with different voltages are recorded; a series of sequential phase
Lu Qieni +3 more
doaj +1 more source
Pseudo-Degeneracy in Handbell Modes [PDF]
arXiv, 2010 The vibrational modes of handbells exist in nearly-degenerate pairs which have been split by nonuniformities in the bell. The possibility of intentionally re-combining a pair into pseudo-degeneracy was explored by adding mass to various locations on a C4 handbell.
arxiv