Dichromated polyvinyl alcohol (DC-PVA) wet processed for high index modulation

1997 ◽  
Author(s):  
Richard D. Rallison
Keyword(s):  
Polyvinyl Alcohol ◽  
High Index ◽  
Index Modulation

Expanded property profile of Bayfol HX® film towards NIR recording and ultra-high index modulation

2021 ◽  
Author(s):  
Friedrich-Karl Bruder ◽  
Johannes Frank ◽  
Sven Hansen ◽  
Alexander Lorenz ◽  
Christel Manecke ◽  
...  
Keyword(s):  
High Index ◽  
Property Profile ◽  
Index Modulation

Signal breathing losses in filters based on optical channel with high index modulation

2017 ◽  
Vol 73 ◽  
pp. 9-15 ◽  
Author(s):  
Kamal Ghoumid ◽  
El Miloud Ar-reyouchi ◽  
Amina Ghadban ◽  
Bekkay Hajji ◽  
Reda Yahiaoui ◽  
...  
Keyword(s):  
High Index ◽  
Optical Channel ◽  
Index Modulation

Effect of pH on the holographic properties of Al2O3 nanoparticle dispersed acrylate photopolymer

2014 ◽  
Vol 28 (11) ◽  
pp. 1450076 ◽  
Author(s):  
Yun-Xi Li ◽  
Chun-Liu Li ◽  
Ming-Ju Huang
Keyword(s):  
Refractive Index ◽  
Polyvinyl Alcohol ◽  
Diffraction Efficiency ◽  
Refractive Index Modulation ◽  
High Definition ◽  
Effect Of Ph ◽  
Nano Fluid ◽  
Al2o3 Nanoparticle ◽  
Bragg Mismatch ◽  
Index Modulation

Several different pH of Al 2 O 3 nano-fluid were prepared using dispersant and doped into polyvinyl alcohol (PVA)/acrylamide (AA) based photopolymers where the photopolymers were exposed with 647 nm Ar + Kr + laser to study its holographic properties. The research shows that the incorporation of Al 2 O 3 nanoparticles (NPs) improves the holographic characteristics of sample, where the pH has an effect to the dispersion of Al 2 O 3 NPs in the photopolymer. When the pH of Al 2 O 3 nano-fluid is about 7, the diffraction efficiency of the sample can be raised to 93.8%, the maximum refractive index modulation can be increased to 2.28×10-3, the shrinkage can be depressed to 0.8%, the Bragg mismatch is 0.04°, and the concentration of 10 nm Al 2 O 3 nano-fluid modified by high definition (HD) dispersant must be 1.02×10-3mol⋅L-1.

Expanding the property profile of Bayfol HX(R) film towards NIR recording and ultra-high index modulation

2021 ◽  
Author(s):  
Friedrich-Karl Bruder ◽  
Johannes Frank ◽  
Sven Hansen ◽  
Alexander Lorenz ◽  
Christel Manecke ◽  
...  
Keyword(s):  
High Index ◽  
Property Profile ◽  
Index Modulation

The usefulness of high index low symmetry zone axes for holz line analysis

1987 ◽  
Vol 45 ◽  
pp. 384-385
Author(s):  
C. M. Sung ◽  
D. B. Williams
Keyword(s):  
Lattice Parameter ◽  
High Order ◽  
Zone Axis ◽  
High Index ◽  
High Symmetry ◽  
Second Phases ◽  
Line Patterns ◽  
Low Symmetry ◽  
Line Analysis

Researchers have tended to use high symmetry zone axes (e.g. <111> <114>) for High Order Laue Zone (HOLZ) line analysis since Jones et al reported the origin of HOLZ lines and described some of their applications. But it is not always easy to find HOLZ lines from a specific high symmetry zone axis during microscope operation, especially from second phases on a scale of tens of nanometers. Therefore it would be very convenient if we can use HOLZ lines from low symmetry zone axes and simulate these patterns in order to measure lattice parameter changes through HOLZ line shifts. HOLZ patterns of high index low symmetry zone axes are shown in Fig. 1, which were obtained from pure Al at -186°C using a double tilt cooling holder. Their corresponding simulated HOLZ line patterns are shown along with ten other low symmetry orientations in Fig. 2. The simulations were based upon kinematical diffraction conditions.

Cryogels based on composition chitosan–polyvinyl alcohol: synthesis and properties

2019 ◽  
Vol 5 (4) ◽  
pp. 56-63
Author(s):  
E.V. Dikhtiaruk ◽  
◽  
V.V. Paientko ◽  
A.K. Matkovsky ◽  
Yu.N. Nichiporuk ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Alcohol Synthesis
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