Synthesis and Properties of New Glassy Molecular and Oligomer Azocompounds Suitable for Holographic Recordings

2011 ◽  
Vol 222 ◽  
pp. 267-270
Author(s):  
Kaspars Traskovskis ◽  
Valdis Kokars ◽  
Andris Ozols ◽  
Peteris Augustovs
Keyword(s):  
Physical Properties ◽  
Spin Coating ◽  
Glassy Phase ◽  
Chloroform Solution ◽  
Polymeric Materials ◽  
Optical Quality ◽  
Side Chain ◽  
Holographic Recording ◽  
Coating Technique ◽  
Good Optical Quality

Molecular diphenylamine derivative containing two azochromophores has been synthesized. Compound showed formation of stable amorphous glassy phase with good optical quality. Functionalization with bulky trityl- group was carried to further improve physical properties of material. Two types of azochromophore containing polymeric materials, azochromophore in side chain containing aromatic polyether and azochromophores in both, main and side chain, containing polyester were also synthesized. Samples for holographic recording were prepared using spin coating technique from saturated chloroform solution. Holographic recording experiments have been made using 532 and 633 nm lasers. All compounds showed ability of forming laser induced diffraction gratings.

scholarly journals DOPED POLY(METHYL METHACRYLATE) PHOTOPOLYMERS FOR HOLOGRAPHIC DATA STORAGE

2006 ◽  
Vol 15 (02) ◽  
pp. 239-252 ◽  
Author(s):  
SHIUAN HUEI LIN ◽  
JUNE-HUA LIN ◽  
PO-LIN CHEN ◽  
YI-NAN SHIAO ◽  
KEN Y. HSU
Keyword(s):  
Methyl Methacrylate ◽  
Data Storage ◽  
Physical Mechanism ◽  
Dynamic Range ◽  
Optical Quality ◽  
Holographic Recording ◽  
Holographic Data Storage ◽  
Poly Methyl Methacrylate ◽  
Recording Material ◽  
Good Optical Quality

In this paper, we report our investigations on thick holographic recording material of the phenanthrenequinone doped poly(methyl methacrylate) (PQ:PMMA) photopolymer. The design strategy and fabrication technique for making thick polymer samples with negligible shrinkage and good optical quality are presented. The physical mechanism for holographic recording in PQ:PMMA material is described, and methods for improving are proposed. Based on these methods, photopolymer samples with different compositions are fabricated and experimentally characterized. The results show that by modifying compositions, the material sensitivity and dynamic range for volume holographic recording have been improved.

An impact of Cr-doping on physical properties of PbI2 thin films facilely deposited by spin coating technique

2020 ◽  
Vol 138 ◽  
pp. 106370 ◽  
Author(s):  
Mohd Taukeer Khan ◽  
Mohd. Shkir ◽  
I.S. Yahia ◽  
Abdullah Almohammedi ◽  
S. AlFaify
Keyword(s):  
Thin Films ◽  
Physical Properties ◽  
Spin Coating ◽  
Spin Coating Technique ◽  
Coating Technique ◽  
Cr Doping

Improved Sol-Gel Materials for Efficient Solid State Dye Lasers

1993 ◽  
Vol 329 ◽  
Author(s):  
Michael Canva ◽  
Patrick Georges ◽  
Jean-Fran^ois Perelgritz ◽  
Alain Brun ◽  
Fréddric Chaput ◽  
...  
Keyword(s):  
Solid State ◽  
Physical Properties ◽  
Room Temperature ◽  
Sol Gel ◽  
Tunable Lasers ◽  
Optical Quality ◽  
Dye Lasers ◽  
Laser Dyes ◽  
Host Matrix ◽  
Host Matrices

AbstractPhotoresistant laser dyes were trapped in silica based xerogel host matrices to obtain solid state tunable lasers. For this purpose very dense xerogel samples with improved chemical and physical properties were prepared at room temperature by the sol-gel technology. The as-prepared materials were polished to obtain optical quality surfaces and were used as new lasing media.Lasing action of such different dyes as rhodamine, perylene and pyrromethene doping dense sol-gel matrices was demonstrated. Efficiencies of 30 % or lifetimes of more than 100,000 shots were achieved with different new ≤dye dopant/host matrix≥ couples. Their different performances are reviewed and discussed.

Silica-Templated Continuous Mesoporous Carbon Films by a Spin-Coating Technique

2004 ◽  
Vol 16 (11) ◽  
pp. 884-886 ◽  
Author(s):  
J. Pang ◽  
X. Li ◽  
D. Wang ◽  
Z. Wu ◽  
V. T. John ◽  
...  
Keyword(s):  
Spin Coating ◽  
Mesoporous Carbon ◽  
Carbon Films ◽  
Spin Coating Technique ◽  
Coating Technique

Photoconductivity of Nanocomposite MEH-PPV: TiO2 Thin Films

2011 ◽  
Vol 13 ◽  
pp. 87-92 ◽  
Author(s):  
M.S.P Sarah ◽  
F.S. Zahid ◽  
M.Z. Musa ◽  
U.M. Noor ◽  
Z. Shaameri ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Surface Morphology ◽  
Spin Coating ◽  
Glass Substrate ◽  
Spin Coating Technique ◽  
Coating Technique ◽  
Current Voltage ◽  
Current Voltage Characteristics

The photoconductivity of a nanocomposite MEH-PPV:TiO2 thin film is investigated. The nanocomposite MEH-PPV:TiO2 thin film was deposited on a glass substrate by spin coating technique. The composition of the TiO2 powder was varied from 5 wt% to 20 wt% (with 5 wt% interval). The concentration of the MEH-PPV is given by 1 mg/1 ml. The current voltage characteristics were measured in dark and under illumination. The photoconductivity showed increment in value as the composition of the TiO2 is raised in the polymer based solution. The absorption showed augmentation as the amount of TiO2 is increased. The escalation of the current voltage is then supported by the results of surface morphology.

In vitro studies on the fine structure of epicuticular leaf wax from Pseudotsuga menziesii

1981 ◽  
Vol 59 (5) ◽  
pp. 640-648 ◽  
Author(s):  
G. R. Lister ◽  
B. W. Thair
Keyword(s):  
Fine Structure ◽  
Physical Properties ◽  
Pseudotsuga Menziesii ◽  
Chloroform Solution ◽  
Scale Construction ◽  
Leaf Wax ◽  
Wax Crystal ◽  
Wax Crystals

The epicuticular leaf wax of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) was recrystallized from chloroform solution in vitro. The striated, tubular forms were reconstituted in sizes which included that observed in vivo, indicating that the final dimensions and morphology of the wax crystals are functions of physical properties of the component molecules, rather than an enzyme-dependent polymerization. Subsequent evaluation of all observations and data formed the basis for the scale construction of a model of the tubular wax crystal.

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