HOLOGRAMS ON THICK EMULSIONS

Determination of threshold exposure and intensity for recording holograms in thick green-sensitive acrylamide-based photopolymer.

For optical data storage applications, it is essential to determine the lowest intensity (also known as threshold intensity) below or at which no data page or grating can be recorded in the photosensitive material, as this in turn determines the data capacity of the material. Here, experiments were carried out to determine the threshold intensity below which the formation of a simple hologram--...

On the Viscosity of Emulsions

Combining direct computations with invariance arguments, Taylor’s constitutive equation for an emulsion can be extrapolated to high shear rates. We show that the resulting expression is consistent with the rigorous limits of small drop deformation and that it bears a strong similarity to an a priori unrelated rheological quantity, namely the dynamic (frequency dependent) linear shear response. ...

Projects in Vr Reconstructing Holograms with Digital Light Augmenting Holograms

12 September/October 2006 Published by the IEEE Computer Society 0272-1716/06/$20.00 © 2006 IEEE Among all the imaging techniques invented throughout the past several decades, computer graphics represent one of today’s most successful methods. Many areas in science, entertainment, education, and engineering would be unimaginable without the aid of 2D or 3D computer graphics. Interactivity provi...

Volume Holograms

Fundamental Superstrings as Holograms

The worldsheet of a macroscopic fundamental superstring in the Green-Schwarz light-cone gauge is viewed as a possible boundary hologram of the near horizon region of a small black string. For toroidally compactified strings, the hologram has global symmetries of AdS3 ×Sd−1 ×T8−d (d = 3, . . . , 8), only some of which extend to local conformal symmetries. We construct the bulk string theory in d...