Results 41 to 50 of about 19,319 (193)
Diffraction from deformed volume holograms: perturbation theory approach [PDF]
, 2005 We derive the response of a volume grating to arbitrary small deformations, using a perturbative approach. This result is of interest for two applications: (a) when a deformation is undesirable and one seeks to minimize the diffracted field's sensitivity
Barbastathis, George +5 more
core +1 more source
Shrinkage Simulation of Holographic Grating Using Diffusion Model in PQ-PMMA Photopolymer
MATEC Web of Conferences, 2015 An extended model based on nonlocal polymerization-driven diffusion model is derived by introducing shrinkage process for describing photopolymerized dynamics in PQ-PMMA photopolymer.
Wei Zepeng +6 more
doaj +1 more source
Solid Freeform Fabrication An Advanced Manufacturing Approach [PDF]
, 1990 Solid freeform fabrication (SFF) is the production of freeform solid objects directly from a computer model without part-specific tooling or human intervention.
Barlow, J.W. +3 more
core +1 more source
High Refractive Index Diphenyl Sulfide Photopolymers for Solar Cell Antireflection Coatings
Energies, 2022 The anti-reflection film can effectively reduce the surface reflectivity of solar photovoltaics, increase the transmittance of light, and improve the photoelectric conversion efficiency.
Jingran Zhang +6 more
doaj +1 more source
Neutron optical beam splitter from holographically structured nanoparticle-polymer composites
, 2010 We report a breakthrough in the search for versatile diffractive elements for cold neutrons. Nanoparticles are spatially arranged by holographical means in a photopolymer. These grating structures show remarkably efficient diffraction of cold neutrons up
C. Pruner +17 more
core +1 more source
Characterization of the DuPont photopolymer for three-dimensional holographic storage [PDF]
, 1994 DuPont's HRF-150 photopolymer film is investigated for use in three-dimensional holographic memories. Measurements of sensitivity, hologram persistence, the lateral spread of the photoinitiated reaction, and the variation of diffraction efficiency with ...
Curtis, Kevin, Psaltis, Demetri
core +1 more source
Science and Engineering of Composite Materials, 2017 The acrylate-based photopolymer consists of tetra-functional polyester acrylate (TPA), and hexanediol diacrylate (HDDA) has been successfully composited with nano barium titanate (BaTiO3) and completely cured via a digital light processor RP machine. The
Wicaksono Sigit Tri +3 more
doaj +1 more source
Compensation Zone Approach to Avoid Z Errors in Mask Projection Stereolithography Builds [PDF]
, 2005 Print-through results in unwanted polymerization occurring beneath a part cured using Mask Projection Stereolithography (MPSLA) and thus creates error in its Z dimension.
Limaye, Ameya, Rosen, David W.
core +1 more source
Sensors, 2023 This paper presents a holographic sensor based on reflection holograms recorded in the commercial photopolymer Bayfol® HX 200. The recording geometry and index modulation of the hologram were optimised to improve accuracy for this specific application ...
Ioana-Adriana Potărniche +3 more
doaj +1 more source
New trends on photopolymers [PDF]
SPIE Proceedings, 2008 Este trabajo ha sido financiado por el Ministerio de Educación y Ciencia, proyectos FIS2005-05881-C02-01 y FIS2005-05881-C02-02, y por la Generalitat Valenciana, proyectos ACOMP06-007 y ACOMP07-020.
Ortuño, Manuel +6 more
openaire +2 more sources