scholarly journals Synthesis and a Photo-Stability Study of Organic Dyes for Electro-Fluidic Display

Micromachines ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 81 ◽  
Author(s):  
Yong Deng ◽  
Shi Li ◽  
Dechao Ye ◽  
Hongwei Jiang ◽  
Biao Tang ◽  
...  
Keyword(s):  
Polar Solvent ◽  
Organic Dyes ◽  
Critical Role ◽  
Stability Study ◽  
Structure Characterization ◽  
Color Coordinates ◽  
Reflective Displays ◽  
Full Color ◽  
Photo Stability ◽  
Optical Behavior

Electro-fluidic display (EFD) is one of the most promising reflective displays because of its full color and video speed. Colored EFD oil, which normally consists of soluble organic dyes and non-polar solvent, plays a critical role in color, electro-optical behavior, and the reliability of the EFD devices. In this paper, we report our research on two kinds of electro-fluidic dyes based on anthraquinone and azo pyrazolone, including their synthesis, structure characterization, and application properties. Changes of absorbance curves, color coordinates of oils, and photoelectric responses of devices were studied in detail under accelerated irradiation to investigate the photo-stability and reliability properties of synthesized oil materials and devices. Photoelectric responses and photo stability of dyes are highly varied depending on their structures. We found that 1,4-dlialkylamino anthraqinone and mono azo pyrazolone dyes are much more stable than 1,8-dlialkylamino anthraqinone and corresponding bisazo pyrazolone dyes.

Novel perylene-based organic dyes for electro-fluidic displays

2020 ◽  
Vol 44 (2) ◽  
pp. 415-421
Author(s):  
Shi Li ◽  
Dechao Ye ◽  
Alex Henzen ◽  
Yong Deng ◽  
Guofu Zhou
Keyword(s):  
Organic Dyes ◽  
Reflective Displays ◽  
Full Color

Electro-fluidic displays (EFDs) are one of the most promising reflective displays due to their full color and video speed.

22.3: Diffuse Renditions of Spatially Pixelated and Temporally Multiplexed H-PDLCs for Full Color Reflective Displays

2001 ◽  
Vol 32 (1) ◽  
pp. 348 ◽  
Author(s):  
Adam K. Fontecchio ◽  
Jun Qi ◽  
Michael J. Escuti ◽  
Ichiro Amimori ◽  
Gregory P. Crawford ◽  
...  
Keyword(s):  
Reflective Displays ◽  
Full Color

scholarly journals Bi-phase emulsion droplets as dynamic fluid optical systems

2019 ◽  
Vol 215 ◽  
pp. 13003
Author(s):  
Sara Nagelberg ◽  
Amy Goodling ◽  
Kaushikaram Subramanian ◽  
George Barbastathis ◽  
Moritz Kreysing ◽  
...  
Keyword(s):  
Critical Role ◽  
Optical Systems ◽  
Emulsion Droplet ◽  
Optical Elements ◽  
Optical Components ◽  
Micro Scale ◽  
Emulsion Droplets ◽  
Spectral Separation ◽  
Optical Behavior ◽  
Scatter Light

Micro-scale optical components play a critical role in many applications, in particular when these components are capable of dynamically responding to different stimuli with a controlled variation of their optical behavior. Here, we discuss the potential of micro-scale bi-phase emulsion droplets as a material platform for dynamic fluid optical components. Such droplets act as liquid compound micro-lenses with dynamically tunable focal lengths. They can be reconfigured to focus or scatter light and form images. In addition, we discuss how these droplets can be used to create iridescent structural color with large angular spectral separation. Experimental demonstrations of the emulsion droplet optics are complemented by theoretical analysis and wave-optical modelling. Finally, we provide evidence of the droplets utility as fluidic optical elements in potential application scenarios.

STABLE Learner Manual 5E - Spanish

2005 ◽  
Author(s):  
Kristine A. Karlsen
Keyword(s):  
Spanish Version ◽  
Cd Rom ◽  
Color Coordinates ◽  
Full Color ◽  
Self Study

This Spanish version Learner Manual serves as a student handbook for either self-study of the S.T.A.B.L.E. CD-ROM or for instructor-led presentations. More than 220 pages of text, photos, and illustrations in full color. Coordinates well with CD-ROM and includes valuable appendices.

scholarly journals Wafer-Scale Semipolar Micro-Pyramid Lighting-Emitting Diode Array

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 686
Author(s):  
Shuo Zhang ◽  
Yan Yan ◽  
Tao Feng ◽  
Yue Yin ◽  
Fang Ren ◽  
...  
Keyword(s):  
Compressive Strain ◽  
Critical Role ◽  
Small Variation ◽  
Single Element ◽  
Peak Wavelength ◽  
Light Emitting ◽  
Wafer Scale ◽  
Full Color ◽  
Led Array ◽  
Wide Range

InGaN-based micro-structured light-emitting diodes (µLEDs) play a critical role in the field of full-color display. In this work, selected area growth (SAG) of a micro-pyramid LED array was performed on a 2-inch wafer-scale patterned SiO2 template (periodicity: 4 µm diameter), by which a uniform periodic µLED array was achieved. The single-element pyramid-shaped LED exhibited 6 equivalent semipolar {1-101} planes and a size of about 5 µm, revealing a good crystalline quality with screw and edge dislocation densities of 8.27 × 107 and 4.49 × 108 cm−2. Due to the stress–relaxation out of the SAG, the as-built compressive strain was reduced to 0.59 GPa. The µLED array demonstrated a stable emission, confirmed by a small variation of electroluminescence (EL) peak wavelength over a wide range of current density up to 44.89 A/cm2, as well as tiny fluctuations (within 1.9 nm) in the EL full width at half maximum. The photoluminescence peak wavelength exhibits a good uniformity throughout the whole wafer with a discrete probability of only 0.25%.

Electrically tunable color for full-color reflective displays

2002 ◽  
Author(s):  
Zili Li ◽  
Pankaj Desai ◽  
Robert B. Akins ◽  
George Ventouris ◽  
Dmitry Voloschenko
Keyword(s):  
Reflective Displays ◽  
Full Color

scholarly journals Paper-Like Electronic Media: The Case for R2R-Processed Full-Color Reflective Displays

2011 ◽  
Vol 27 (1) ◽  
pp. 18-23
Author(s):  
Jong-Souk Yeo ◽  
Richard Elder ◽  
Warren Jackson ◽  
Randy Hoffman ◽  
Dick Henze ◽  
...  
Keyword(s):  
Electronic Media ◽  
Reflective Displays ◽  
Full Color

Development and Validation of Microbiological Assay for Ceftriaxone and its Application in Photo-stability Study

2013 ◽  
Vol 9 (1) ◽  
pp. 77-81
Author(s):  
Felipe Rebello Lourenco ◽  
Marcus Augusto Lyrio Traple ◽  
Rogerio Takao Okamoto ◽  
Terezinha de Jesus Andreoli Pinto
Keyword(s):  
Stability Study ◽  
Microbiological Assay ◽  
Photo Stability ◽  
Development And Validation

Optical Properties of PTCDA Bulk Crystals and Ultrathin Films

2006 ◽  
Vol 518 ◽  
pp. 41-46 ◽  
Author(s):  
Igor Vragović ◽  
R. Scholz ◽  
J.P. Šetrajčić
Keyword(s):  
Optical Properties ◽  
Organic Dyes ◽  
Solid Phase ◽  
Stokes Shift ◽  
Index Of Refraction ◽  
Dielectric Tensor ◽  
Exciton Model ◽  
Semiconducting Properties ◽  
Decay Times ◽  
Optical Behavior

Thin films and interfaces of crystalline organic dyes with semiconducting properties attracted a lot of attention in the last decade due to their numerous applications in electronics and optoelectronics. One of the most studied molecules is 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA); an archetypal organic material that can grow into multilayer films. Despite the great interest and intensive investigations, its optical properties are still not completely understood. The interpretations range from the Wannier-Mott exciton model to models of excitons of small radii. In the present work, we apply the Frenkel exciton model in order to describe the optical behavior of the solid phase of PTCDA, influenced by the transfer of excitations between different molecules. We are able to model the anisotropy of dielectric tensor, lineshape of the complex index of refraction, exciton dispersion and the large Stokes shift between absorption and photoluminescence, results of electron-energy loss spectroscopy, and photoluminescence transition energies and decay times. In addition, we made an extension of the model towards ultrathin PTCDA films.

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