Measurement of parameters of optically transparent films

2021 ◽  
Author(s):  
Myroslav Strynadko
Keyword(s):  
Transparent Films ◽  
Optically Transparent

Displays from Transparent Films of Natural Nanofibers

MRS Bulletin ◽  
2010 ◽  
Vol 35 (3) ◽  
pp. 214-218 ◽  
Author(s):  
Antonio Norio Nakagaito ◽  
Masaya Nogi ◽  
Hiroyuki Yano
Keyword(s):  
Thermal Expansion ◽  
Flexible Substrate ◽  
Cellulose Nanofibers ◽  
Organic Light Emitting Diodes ◽  
Flexible Displays ◽  
Light Emitting ◽  
Plastic Substrates ◽  
Transparent Films ◽  
Organic Light ◽  
Optically Transparent

AbstractOrganic light-emitting diodes bring a whole new level of image quality, power consumption, and very thin profiles to displays. In addition, with the appropriate choice of a flexible substrate, paper-like flexible displays that are lightweight, robust, and conformable can be produced. This will make it possible to roll or fold the displays for portability or incorporate them in clothing as wearable displays. Plastic substrates are considered prospective materials due to their inherent flexibility and optical qualities. However, one of the major drawbacks of plastics is the large thermal expansion. The thermal expansion of the substrate has to be compatible with those of the layers deposited on it, otherwise these layers will become strained and crack during the thermal cycling involved in the display manufacture. One of the proposed solutions to reduce the thermal expansion of plastics without appreciable loss in transparency is to reinforce them with nanofibers. These nanofibers are already available in enormous quantities in nature, in the form of cellulose, with the caveat that they have to be extracted properly. Here we present the methodologies required to obtain the cellulose nanofibers and to produce optically transparent composites for use in flexible displays.

Enlarged Parameter Space by Use of VHF-GD for Deposition of Thin Type μc-Si:H Films

1996 ◽  
Vol 452 ◽  
Author(s):  
P. Torres ◽  
J. Meier ◽  
R. Flückiger ◽  
H. Keppner ◽  
A. Shah
Keyword(s):  
Gas Phase ◽  
High Frequency ◽  
Low Temperatures ◽  
High Electrical Conductivity ◽  
Very High Frequency ◽  
Transparent Films ◽  
Optically Transparent ◽  
Plasma Excitation ◽  
P Type ◽  
Very High

AbstractIn this paper new results on thin p - type μc-Si:H films deposited at low temperatures of 170 °C by the Very High Frequency - Glow Discharge technique (VHF-GD) are presented. The “tolerated” amount of diborane added in the gas phase ratio as well as the influence of three different plasma excitation frequencies (70, 100 and 130 MHz) in obtaining high electrical conductivity are investigated. The goal is to optimise very thin (< 400 Å) and hence optically transparent films by maintaining high conductivities for the application as window layers of solar cells.

Preparation of Optically Transparent Films of Poly(methyl methacrylate) (PMMA) and Montmorillonite

2001 ◽  
Vol 703 ◽  
Author(s):  
Elena Vasiliu ◽  
Chyi-Shan Wang ◽  
Richard A. Vaia
Keyword(s):  
Layered Silicate ◽  
Polymer Nanocomposite ◽  
Barrier Properties ◽  
Nanocomposite Material ◽  
Optical Transparency ◽  
Processing Scheme ◽  
Transparent Films ◽  
X Ray Scattering ◽  
Optically Transparent ◽  
High Degree

ABSTRACTTransparent polymeric material with enhanced thermal, mechanical and barrier properties are of special interest for advanced structural, optical and photonic applications. The present paper reports a novel solution processing scheme for fabricating optically transparent polymer nanocomposites involving organophilic layered silicates. It is shown that the nanocomposite material prepared with PMMA and an organically modified montmorrilonite maintains the excellent optical transparency of PMMA. Small-angle x-ray scattering of the polymer nanocomposite material does not show any Bragg's reflection of the organophilic layered silicate. The optical transparency of the nanocomposite material is attributed to a high degree of exfoliation of the montmorrilonite in the polymer matrix.

scholarly journals Control of Shielding Effectiveness of Optically Transparent Films by Modification of the Edge Termination Geometry

2020 ◽  
Vol 62 (6) ◽  
pp. 2431-2440
Author(s):  
Mathieu Croizer ◽  
Quentin Tricas ◽  
Philippe Besnier ◽  
Xavier Castel ◽  
Patrice Foutrel
Keyword(s):  
Shielding Effectiveness ◽  
Transparent Films ◽  
Edge Termination ◽  
Optically Transparent

Formation of Highly Conducting Optically Transparent Films with Multigraphene Structure via Carbonization of Polyimide Langmuir–Blodgett Films

2019 ◽  
Vol 45 (5) ◽  
pp. 471-474
Author(s):  
S. I. Goloudina ◽  
V. V. Luchinin ◽  
V. M. Pasyuta ◽  
A. N. Smirnov ◽  
D. A. Kirilenko ◽  
...  
Keyword(s):  
Transparent Films ◽  
Langmuir Blodgett ◽  
Optically Transparent ◽  
Langmuir Blodgett Films

Dislocations, Ordering and Antiferromagnetic Domains in MnO

1970 ◽  
Vol 28 ◽  
pp. 522-523
Author(s):  
D. J. Barber ◽  
R. G. Evans
Keyword(s):  
Electron Diffraction ◽  
Single Crystal ◽  
Optical Microscopy ◽  
Defect Chemistry ◽  
Magnetic Structures ◽  
Optically Transparent ◽  
Magnetic Features ◽  
Antiferromagnetic Domains

Manganese (II) oxide, MnO, in common with CoO, NiO and FeO, possesses the NaCl structure and shows antiferromagnetism below its Neel point, Tn∼ 122 K. However, the defect chemistry of the four oxides is different and the magnetic structures are not identical. The non-stoichiometry in MnO2 small (∼2%) and below the Tn the spins lie in (111) planes. Previous work reported observations of magnetic features in CoO and NiO. The aim of our work was to find explanations for certain resonance results on antiferromagnetic MnO.Foils of single crystal MnO were prepared from shaped discs by dissolution in a mixture of HCl and HNO3. Optical microscopy revealed that the etch-pitted foils contained cruciform-shaped precipitates, often thick and proud of the surface but red-colored when optically transparent (MnO is green). Electron diffraction and probe microanalysis indicated that the precipitates were Mn2O3, in contrast with recent findings of Co3O4 in CoO.

Morphological transformations in solution-cast Styrene-Butadiene-Styrene (SBS) triblock copolymer thin films

1995 ◽  
Vol 53 ◽  
pp. 184-185
Author(s):  
Ginam Kim ◽  
W. Marsillo ◽  
M. Libera
Keyword(s):  
Thin Films ◽  
Triblock Copolymer ◽  
Annealing Treatment ◽  
Minor Component ◽  
Solvent Evaporation ◽  
Single Crystal Substrate ◽  
Transparent Films ◽  
Crystal Substrate ◽  
Solution Cast ◽  
Morphological Transformations

The fact that block copolymers can assume a range of morphologies depending upon such variables as relative block length and molecular weight is now well known. In the case of poly(styrene)[PS]-poly(butadiene)[PB]-poly(styrene) (SBS) triblock copolymer, the morphologies range from spheres (roughly ~20% minor component), to cylinders (roughly 20%~35% minor component), to lamellae (roughly equal component fractions) Most recently, there has been increasing interest in transformations between morphologies by thermal annealing. This paper describes initial results studying the effect of solvent evaporation rate and post-casting annealing treatment on the morphology of SBS thin films.TEM specimens were prepared by solution casting electron transparent films. 50 μl of 0.1 wt% SBS (30% styrene, Mw=14,000, Scientific Polymer Products, Inc.) dissolved in toluene was deposited on a polished NaCl single crystal substrate placed in a small dish. After solvent evaporation the film was cut into small squares, floated from the salt in water, and each square was collected on a Cu grid.

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