Reflective LCD with high reflectance and color reproducibility for reduced eye strain

2016 ◽  
Vol 24 (3) ◽  
pp. 168-176 ◽  
Author(s):  
Daisuke Kubota ◽  
Yasuhiro Niikura ◽  
Ryo Hatsumi ◽  
Yoshiharu Hirakata ◽  
Hiroyuki Miyake ◽  
...  
Keyword(s):  
High Reflectance ◽  
Color Reproducibility

Economically synthesized NiCo2S4/TiO2 with high reflectance ability as the counter electrode to replace Pt for dye-sensitized solar cells

2021 ◽  
Author(s):  
Li-Jiao Ma ◽  
Jia-Bin Shi ◽  
Gang Wang ◽  
Zi-Zhuo Fu ◽  
Yang-Hong Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
High Reflectance

High-reflectance coatings and materials for the extreme ultraviolet

1995 ◽  
Author(s):  
Ritva A. M. Keski-Kuha ◽  
John F. Osantowski ◽  
Gerry M. Blumenstock ◽  
Jeffrey S. Gum ◽  
Charles M. Fleetwood ◽  
...  
Keyword(s):  
Extreme Ultraviolet ◽  
High Reflectance

Laccase-catalyzed enzymatic dyeing of cotton fabrics

2021 ◽  
pp. 004051752110069
Author(s):  
Rıza Atav ◽  
Bürhan Buğdaycı ◽  
Ömer Bozkurt ◽  
Aylin Yıldız ◽  
Elçin Güneş ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Uv Protection ◽  
Infrared Analysis ◽  
Synthetic Dyes ◽  
Protection Factor ◽  
Knitted Fabrics ◽  
Reactive Dyeing ◽  
Dyeing Process ◽  
Laccase Enzyme ◽  
Color Reproducibility

As some synthetic dyes are regarded to be toxic, mutagenic and carcinogenic, the search for eco-friendly alternatives for the synthesis of dyes and coloration has gained importance. For this reason, this study focused on finding new eco-friendly alternatives for coloring cotton. 100% cotton knitted fabrics were subjected to enzymatic coloration using a commercial laccase enzyme and various precursors. After determining the colors, the effect of pH on the enzymatic dyeing process was investigated. Then the optimization of reaction conditions was also realized statistically for the precursors giving the best results in terms of color. With the aim of obtaining further improvements in color-yield values obtained in enzymatic dyeings, the effect of the pretreatment process and the use of ultrasound were also investigated. Furthermore, the reaction pathways in enzymatic coloration were explained and results were confirmed by means of Fourier Transformed Infrared analysis. As a result of experimental studies, red and lilac colors could be successfully obtained on cotton for the first time in the literature. In this way, the theoretical basis of enzymatic dye synthesis and dyeing of cotton was clarified comprehensively. Furthermore, technical (color reproducibility; washing, rubbing, light and perspiration-fastness values; and UV protection factor), economical (chemical, energy and water consumption required for dyeing (including aftertreatments) of 1 kg fabric) and ecological aspects of enzymatic dyeings were compared with reactive dyeing. According to the experimental results it was found that biological treatment alone was enough for wastewater of enzymatic coloring, while chemical treatment will also be needed in reactive dyeing wastewater. Furthermore, color reproducibility, evenness and UV protection properties of dyed samples were comparable with that of reactive dyeings. However, in terms of the fastness levels achieved, the enzymatic coloring was far behind the reactive dyeing.

Artificial Opals: Reflection Spectra and Distribution Laws of Energy Transfer

2016 ◽  
Author(s):  
Yuan Bin Liu ◽  
Jun Qiu ◽  
Rong Jin ◽  
Lin Hua Liu
Keyword(s):  
Structural Parameters ◽  
Theoretical Interpretation ◽  
Silica Spheres ◽  
Propagation Process ◽  
Hemispherical Reflectance ◽  
Distribution Laws ◽  
Spectral Ranges ◽  
Poynting Vectors ◽  
High Reflectance ◽  
Effect Of Light

In this work, we investigated the reflection properties of artificial opals composed of submicron silica spheres with diverse structural parameters and under the effect of light in different states. Furthermore, the primary rules how the reflection properties of artificial opals convert as these factors changing have been revealed clearly. These factors can take effects in changing the shape, value, and position of the peak of the hemispherical reflectance of artificial opals. Then we got the distribution and propagation process of the Poynting vectors corresponding to the positions of the diffraction peak and the low reflectance in the artificial opals at normal and oblique incidence of P-polarization. Comparing with the theoretical interpretation which is a little complicated and nonobjective, this paper will provide a visual result to explain the reason why the structure has high reflectance in some spectral ranges.

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