http://dx.doi.org/10.1016/j.ijsolstr.2014.07.009 0020-7683/ 2014 Elsevier Ltd. All rights reserved. ⇑ Corresponding author. Tel.: +1 334 844 3327. E-mail address: [email protected] (H.V. Tippur). 1 In a Polyjet Technology, a thin layer of photopolymer in the liquid state is or sprayed over a build-tray followed UV radiation to cure the polymer. The b moves down incrementally and the computer c...

We have fabricated electrically switchable holographic gratings, using Polaroid Corporation's DMP-128 photopolymer filled with the nematic liquid crystal E7. It is shown that a coupled-wave theory that includes the effects of the birefringence of the liquid crystal must be used to explain the diffraction properties of these anisotropic volume gratings. Furthermore, a detailed comparison of theo...

Two new products were isolated from uracil irradiated with ultraviolet light in frozen aqueous solution. As judged by mass, nuclear magnetic resonance, and ultraviolet and infrared spectra, one is a photopolymer, U(3) and the structure of the other is probably 6-4'-[ pyrimidin-2'-one]-uracil. Formations of these products between pyrimidine bases are apparently common photoreactions, and may be ...

Photopolymers are interesting materials for use in recording information in holography. We study the holographic behavior and stability of volume holograms recorded in poly(vinyl alcohol)--acrylamide photopolymers with and without a cross linker. Using a first-harmonic diffusion model, we analyze the residual monomer that remains when volume diffraction gratings are recorded in photopolymer mat...