Results 41 to 50 of about 99,918 (270)
AIP Advances, 2011 We report the observation of large changes in the electro-optical properties of nematic liquid crystal (NLC) due to inclusion of small concentration of 10 nm diameter gold nanoparticles (GNPs).
M. Inam +3 more
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Grid computing for the numerical reconstruction of digital holograms [PDF]
, 2005 Digital holography has the potential to greatly extend holography's applications and move it from the lab into the field: a single CCD or other solid-state sensor can capture any number of holograms while numerical reconstruction within a computer ...
Fryer, PC, Hobson, PR, Nebrensky, JJ
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Holography and cosmology [PDF]
Physics Letters B, 1999 We consider a recent generalisation by Bousso of an earlier holography proposal by Fischler and Susskind. We demonstrate that in general inhomogeneous universes such a proposal would involve extremely complicated - possibly fractal - light sheets. Furthermore, in general such a light sheet cannot be known a priori on the basis of theory and moreover ...
Reza Tavakol +2 more
openaire +4 more sources
A speculative remark on holography [PDF]
, 1998 Holography suggests a considerable reduction of degrees of freedom in theories with gravity. However it seems to be difficult to understand how holography could be realized in a closed re--contracting universe.
Banks +7 more
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Holography and phenomenology [PDF]
Journal of High Energy Physics, 2001 We examine various aspects of the conjectured duality between warped AdS$_5$ geometries with boundary branes and strongly coupled (broken) conformal field theories coupled to dynamical gravity. We also examine compactifications with 5-d gauge fields, in which case the holographic dual is a broken CFT weakly coupled to dynamical gauge fields in addition
Lisa Randall +3 more
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Attributing scientific and technical progress: the case of holography [PDF]
, 2005 Holography, the three-dimensional imaging technology, was portrayed widely as a paradigm of progress during its decade of explosive expansion 1964–73, and during its subsequent consolidation for commercial and artistic uses up to the mid 1980s.
Abbott Andrew Delano +47 more
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Shifting perspectives: holography and the emergence of technical communities [PDF]
, 2005 Holography, the technology of three-dimensional imaging, has repeatedly been reconceptualised by new communities. Conceived in 1947 as a means of improving electron microscopy, holography was revitalized in the early 1960s by engineer-scientists at ...
Johnston, S.F.
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Incoherent Digital Holography: A Review
Applied Sciences, 2018 Digital holography (DH) is a promising technique for modern three-dimensional (3D) imaging. Coherent holography records the complex amplitude of a 3D object holographically, giving speckle noise upon reconstruction and presenting a serious drawback ...
Jung-Ping Liu +3 more
doaj +1 more source
Exploring shot noise and Laser Doppler imagery with heterodyne holography
, 2012 Heterodyne Holography is a variant of Digital Holography, where the optical frequencies of signal and reference arms can be freely adjusted by acousto-optic modulators.
Atlan, Michael +3 more
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Journal of High Energy Physics, 2010 Aging phenomena are examples of `non-equilibrium criticality' and can be exemplified by systems with Galilean and scaling symmetries but no time translation invariance. We realize aging holographically using a deformation of a non-relativistic version of gauge/gravity duality.
Juan I. Jottar +3 more
openaire +3 more sources