90 resources related to Electrochromism
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Electrets and related phenomena are at the frontier of both fundamental scientific and technological interest. The advent of additive manufacturing also opens up new challenges in this field, which can aid solving many process-related challenges and bring about new ways of manufacturing. The huge success of device applications of electrets in the past can expand on novel applications in energy harvesting, bioelectrical stimulation, new sensors and actuators, device and components and characterisation techniques. The ISE conference series is a unique meeting opportunity for scientists and engineers from all over the world working in the field of electrical engineering, manufacturing and process engineering, materials science and engineering, condensed matter physics and chemistry. It provides a platform for interdisciplinary discussions, debate and dialogues on recent advances in research, development and applications.
Photonics-related physical phenomena and effects, photonic device and integration, optical communications, transmission system and networks, photonic sensors, photonics for energy, radio-over fiber system, optical measurements & metrology.
The meeting covers all areas of electron devices: Si-devices, compound semiconductor devices, emerging solid-state devices, circuit technology and related modeling, simulations, characterization, material and process technologies, microwave theory and technologies.
The 41st International Spring Seminar on Electronics Technology is the premier European forum for the exchange of information between senior and young scientists from academic communities and electronic industries from around the world on topics related to their experimental and theoretical work in the very wide-spread field of electronics and micro/nanoelectronics technology and electronic packaging. The theme of upcoming conference is “Research and Development Tendencies in Advanced Electronics Technologies”. The first time ever the ISSE Conference will be held in Zlatibor, Serbia.In the frame of a unique combination of poster exhibitions, oral paper presentations, and individual meetings senior and junior researchers from all over the world can come together to discuss scientific problems and their teaching experiences as well as plan and organize international cooperations and student exchanges in a convenient and multicultural atmosphere.
The DRC brings together leading scientists, researchers, and students to share their latest discoveries in device science, technology and modeling. Areas of focus include: Biological DevicesEmerging Electronic Device Materials (graphene, MoS2, etc.)Energy Scavenging Devices Magnetic DevicesMemory DevicesModeling and Simulation of Devices Nanoscale DevicesOptoelectronic and Optical DevicesOrganic and Molecular DevicesPower DevicesQuantum DevicesSilicon, III-V, and 2D Electronic Devices Spin-based DevicesThin Film and Amorphous Devices Terahertz DevicesWide-bandgap Devices
Component parts, hybrid microelectronics, materials, packaging techniques, and manufacturing technology.
The design and manufacture of consumer electronics products, components, and related activities, particularly those used for entertainment, leisure, and educational purposes
This publication covers the theory, design, fabrication, manufacturing and application of information displays and aspects of display technology that emphasize the progress in device engineering, device design, materials, electronics, physics and reliabilityaspects of displays and the application of displays.
The magazine covers theory, analysis, design (computer-aided design), and practical implementation of circuits, and the application of circuit theoretic techniques to systems and to signal processing. Content is written for the spectrum of activities from basic scientific theory to industrial applications.
Publishes original and significant contributions relating to the theory, design, performance and reliability of electron devices, including optoelectronic devices, nanoscale devices, solid-state devices, integrated electronic devices, energy sources, power devices, displays, sensors, electro-mechanical devices, quantum devices and electron tubes.
1975 International Electron Devices Meeting, 1975
The development of a solid state electro-chromic device for display applications is reported in this paper. The electro-chromic structure consists of a multilayer thin film system and therefore, successful fabrication of it requires optimization of each constituent layer with respect to various deposition parameters. We discuss the physical principle, the fabrication methods and operational characteristics of a typical system. Some ...
2010 IEEE 23rd International Conference on Micro Electro Mechanical Systems (MEMS), 2010
In this research, we present a chip based capillary electrochromatography (CEC) carrying out a highly efficient separation of biomolecules through gradient hydrophobic stationary phase (GHSP) provided by multiwalled carbon nanotubes (MWCNTs) nanocolumns. 4-azidoaniline was employed for the surface modification of the MWCNTs to form a gradient stationary phase by a photochemical reaction through a gradient light filter. This device was ...
International Conference on Science and Technology of Synthetic Metals, 1994
Summary form only given. The electrochemical and spectroelectrochernical studies of polypyrrole-latex coatings of 1 or 3 /spl mu/m thickness, on ITO windows in aqueous and organic media indicate a low electrochrornic effect and a strong capacitive effect. The best contrast was close to 0. 15 unit of absorbance and the average capacitance was 7.5 mF.cm/sup -2//spl mu/m/sup -1/. The range ...
2007 IEEE 20th International Conference on Micro Electro Mechanical Systems (MEMS), 2007
We developed an electrochromic voxel array for realizing a three-dimensional (3D) display. A voxel is a unit of 3D graphic data just as a pixel of 2D data. The color of voxels is tuned not by their light emission but by their light absorption in the same way as the coloration of things in the real world. Our voxels consist ...
63rd Device Research Conference Digest, 2005. DRC '05., 2005
The development of a solid state electro-chromic device for display applications is reported in this paper. The electro-chromic structure consists of a multilayer thin film system and therefore, successful fabrication of it requires optimization of each constituent layer with respect to various deposition parameters. We discuss the physical principle, the fabrication methods and operational characteristics of a typical system. Some of the other systems involving "super-ionic conductors" and impurity doped systems are also considered.
In this research, we present a chip based capillary electrochromatography (CEC) carrying out a highly efficient separation of biomolecules through gradient hydrophobic stationary phase (GHSP) provided by multiwalled carbon nanotubes (MWCNTs) nanocolumns. 4-azidoaniline was employed for the surface modification of the MWCNTs to form a gradient stationary phase by a photochemical reaction through a gradient light filter. This device was used for separating proteins (20 ¿M FITC-BSA and FITC-Cytochrome C) with different hydrophobic characteristics, and MALDI-TOF-MS detection was employed to verify the separation efficiency in this MWCNTs nanocolumn. The best separation resolution of the FITC-BSA column efficiency was 2.5 × 10<sup>4</sup> (plats/m).
Summary form only given. The electrochemical and spectroelectrochernical studies of polypyrrole-latex coatings of 1 or 3 /spl mu/m thickness, on ITO windows in aqueous and organic media indicate a low electrochrornic effect and a strong capacitive effect. The best contrast was close to 0. 15 unit of absorbance and the average capacitance was 7.5 mF.cm/sup -2//spl mu/m/sup -1/. The range of potential to have a stable behaviour was 1 V. The response time was mostly function of the electrolyte conductivity. The RC constant was from 0.23 s for a film of 1 /spl mu/m in acetonitrile 0.25 M LiClO/sub 4/ to 3.1 s in propylene carbonate 0.3 M LiClO/sub 4/. Electrolyte influence was studied by chronocoulometry in water: HiClO/sub 4/, NiClO/sub 4/; H/sub 2/SO/sub 4/, Na/sub 2/SO/sub 4/; H/sub 3/PO/sub 4/; in propylene carbonate and acetonitrile LiClO/sub 4/. The stability of polypyrrole coatings was studied upon repetitive cyclic voltammetry. The best result was obtained in propylene carbonate. Films only lost 2.5% of charge (C) after 7000 cycles. Polypyrrole- latex coatings have no interest for electrochromic devices by itself, but it can be used as a first conducting layer for displays or electroluminescent diodes. Polypyrrole latex is also very interesting for condensers and for high power capacitors.
We developed an electrochromic voxel array for realizing a three-dimensional (3D) display. A voxel is a unit of 3D graphic data just as a pixel of 2D data. The color of voxels is tuned not by their light emission but by their light absorption in the same way as the coloration of things in the real world. Our voxels consist of ITO electrodes on glass substrates and 1 mm cubes of an UV- curing polymer coated with electrochromic material which can change its color electrically. We utilized poly-(3,4-ethylenedioxy- thiophene):polystyrenesulfonate (PEDOT:PSS) as the electrochromic material. Our voxel array and its Al counter electrode were soaked in CaCl<sub>2</sub> solution. Voxels were operated with a very low voltage of about 1.0 V We demonstrated a 4x4 voxel array, and the color change of the voxels was observed not only in the top view but also in the side view.
The polythiophenes have been widely used as a conducting polymer and in many others applications such as electrochromism. The introduction of an azobenzene group can extend the possible applications to other fields, such as optical memories. In this work, a thiophenic monomer with an azobenzene moiety at the 3-position of the thiophene ring was synthesized by esterification reaction between the commercial dye disperse red 1 (DR1) and 3-thiopheneacetic acid. The UV-Vis spectra of polymer in solution were obtained and used to study the possible solvato- and thermochromic properties of the polymer. The thermochromic property was analyzed in the temperature interval of 10 to 70 /spl deg/C. The solvents used in the solvatochromic study were hexane, chloroform, tetrahydrofuran, toluene, acetone, methanol, acetonitrile and dimethylformamide.
An all solid inorganic thin film electrochromic display with the complementary structure of /ITO/WO/sub 3//LiNbO/sub 3//NiO/ITO/ was fabricated. The layers of the display were all prepared by reactive magnetron sputtering. Electrochromic property measurements were performed on each active layer as well as on the assembled display. The display has been found to exhibit excellent display characteristics.
Summary form only given.Molecular J-aggregates are attracting the interest of many scientists as photoactive materials based on molecular excitons. The excitonic transition of the J-aggregates has a large oscillator strength characterized by one-dimensional systems, which results in an enhanced optical nonlinearity. Previously, we developed a vertical spin-coating method to prepare oriented J-aggregates dispersed in polyvinylalcohol (PVA) films. The new method enabled us to investigate detailed structure of J-aggregates. In the present paper, the molecular stacking and the number of molecules in a one-dimensional J-aggregate were determined by means of dichroic electrochromism (DCE). The dye molecule studied is tetraphenyl porphyrin sulfonic acid, information about which may offer a very important clue to the light-harvesting mechanism in a system of antenna chlorophyll.
Summary form only given. Cyclic voltammograms of methoxy, ethoxy and 2,5-dimethoxy substituted polyaniline in media of various pH show two redox waves between -0.2V to 0.8 V. A third wave appears between these two waves if the scanning potential is high or in medium of higher pH. According to the results of molecular weight determination by GPC, the third redox wave was attributed to the degradation products during hydrolysis. Epr and UV-visible spectra indicate the existence of radical in the potential range between the two redox waves. The higher the pH of the medium, The wider the potential range where the radical is stable. The larger the alkoxy group, the narrower the range where the radical is stable. The potential range where the radical is stable shifted to lower potential for 2,5-dimethoxy substituted polyaniline. Both monomer concentration and rate of synthesis affect the morphology of ethoxy-substituted polyaniline. Regular short fiber structure was formed under low current density when the monomer concentration is low. When monomer concentration is high, short regular fiber structure were always formed under high or low current densities. The regular short fiber structure was formed under slow growing rate.
Summary form only given. We report the dehalogenative polymerization of methyl 1, 4-dichloro- benzoate (MDCB) and methyl 2,5-dichlorothiophene carboxylate (MDCTC), and its hydrolysis to poly(sodium paraphenylene carboxylate) (PSPC) and poly(sodium thiophene-3-carboxylate) (PSTC) that are useful for the electrochemical polymerization of pyrrole. The degree of polymerization of PMPC and PMTC were 40 and 18, respectively. These polymers were soluble in water. Electrochemical polymerization of pyrrole was carried out in water with PSPC and PSTC, and the conductivities of polypyrrole films were 1.3 and 0.24 S/cm, respectively. By using PSPC and PSTC gave conducting films, it is suggested that PSPC and PSTC are interesting polymeric electrolytes.
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