Electrochromism

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Electrochromism is the phenomenon displayed by some materials of reversibly changing color when a burst of charge is applied. (Wikipedia.org)






Conferences related to Electrochromism

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2019 IEEE 17th International Symposium On Electrets (ISE)

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.


2018 12th Spanish Conference on Electron Devices (CDE)

The conference aims at bringing together reseachers to show their latest results, relevant ideas or innovations that advance the state-of-the-art in the areas of the Electron Devices from a broad point of view. Topics span from basic theory to industrial applications, including research, development, design, technology and applications of electron devices.

  • 2017 Spanish Conference on Electron Devices (CDE)

    The conference aims at bringing together reseachers to show their latest results, relevant ideas or innovations that advance the state-of-the-art in the areas of the Electron Devices from a broad point of view. Topics span from basic theory to industrial applications, including research, development, design, technology and applications of electrondevices.

  • 2015 10th Spanish Conference on Electron Devices (CDE)

    CDE brings together the work of both research groups and companies on the field of electronic devices. Technical areas include, but are not limited to:

  • 2013 Spanish Conference on Electron Devices (CDE)

    The conference intends to show the last topics related to Electron Devices, such as Material & Process Technology, Device Modelling & Simulation, Characterization & Reliability and its implications on main devices: Sensor, Actuators and micro/nano systems Photovoltaic and optoelectronic devices an displays Emerging Devices and RF, Microwave and Power Devices. Also it is very interesting the exchange and communication between Spanish and non-Spanish researchers on Electron Devices.

  • 2011 Spanish Conference on Electron Devices (CDE)

    This conference brings together the work of both research groups and companies on the field of electronic devices. The main topics are: Materials, technology and process simulation, device modeling and simulation, characterization and reliability of materials and devices.

  • 2009 Spanish Conference on Electron Devices (CDE)

    The objective of the conference is the study of electron devices in all their variants (sensors, actuators, micro-systems and MEMS,optoelectronic and photovoltaic devices, micro- and nano-devices, RF devices, microwave and power, etc.), including also the materials and fabrication technologies, process simulation and devices, characterization and reliability.

  • 2007 Spanish Conference on Electron Devices (CDE)

  • 2005 Spanish Conference on Electron Devices (CDE)


2018 41st International Spring Seminar on Electronics Technology (ISSE)

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.

  • 2017 40th International Spring Seminar on Electronics Technology (ISSE)

    The main focus of the ISSE is both directed in bringing deeper knowledge and information ofelectronics technology, and, especially for young researchers, to increase or confirm amotivation for intensifying their engagement in the field of electrical engineering. The conferencewill be accompanied by an exhibition of commercial industrial exhibitors, which gives a greatmarketing opportunity to reach a broad segment of professionals in the field of electronicstechnology. The conference is an effective crucial point for institutions, government officials,pioneering engineers, academics, experienced and young researchers and many otherprofessionals working on relevant fields to discuss the current challenges and to provide up-todateknowledge

  • 2016 39th International Spring Seminar on Electronics Technology (ISSE)

    The main focus of the ISSE is both directed in bringing deeper knowledge and information of electronics technology, and, especially for young researchers, to increase or confirm a motivation for intensifying their engagement in the field of electrical engineering. The conference will be accompanied by an exhibition of commercial industrial exhibitors, which gives a great marketing opportunity to reach a broad segment of professionals in the field of electronics technology. The conference is an effective crucial point for institutions, government officials, pioneering engineers, academics, experienced and young researchers and many other professionals working on relevant fields to discuss the current challenges and to provide up-to-date knowledge.

  • 2015 38th International Spring Seminar on Electronics Technology (ISSE)

    Focus: Novel Trends in Electronics Manufacturing. The International Spring Seminar on Electronics Technology (ISSE) 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. Topics include experimental and theoretical work in a very wide-spread field of electronics and micro/nanoelectronics technology, manufacturing, packaging and advanced research. Based on a combination of oral and poster presentations as well as individual meetings, professors, industrial participants, students, senior and junior researchers come together in a unique forum to discuss scientific and educational topics and organize international cooperation during the five-day event.

  • 2014 37th ISSE International Spring Seminar in Electronics Technology (ISSE)

    The International Spring Seminar on Electronics Technology (ISSE) 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. Topics include experimental and theoretical work in a very wide-spread field of electronics and micro/nanoelectronics technology and packaging. Based on a unique combination of oral and poster presentations as well as individual meetings, professors, students, senior and junior researchers come together in a unique forum to discuss scientific and educational topics and organize international cooperation in a convenient atmosphere during the conference days.

  • 2013 36th International Spring Seminar on Electronics Technology (ISSE)

    This international conference focusses on exchange of information between senior and young scientists from academic communities and electronic industries. Since 1977 the conference has been hosted by different Eureopean universities.

  • 2012 35th International Spring Seminar on Electronics Technology (ISSE)

    The 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 widespread field of electronics and microelectronics technology and packaging.

  • 2011 34th International Spring Seminar on Electronics Technology (ISSE)

    The 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 widespread field of electronics and microelectronics technology and packaging.

  • 2010 33rd International Spring Seminar on Electronics Technology (ISSE)

    The 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 microelectronics technology and packaging.

  • 2009 32nd International Spring Seminar on Electronics Technology (ISSE)

    The 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 microelectronics technology and packaging. Based on a unique combination of oral and poster presentations as well as individual meetings, professors and students, senio

  • 2008 31st International Spring Seminar on Electronics Technology (ISSE)

    he 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 microelectronics technology and packaging. Based on a unique combination of oral and poster presentations as well as individual meetings, professors and students, senior an

  • 2007 30th International Spring Seminar on Electronics Technology (ISSE)

  • 2006 29th International Spring Seminar on Electronics Technology (ISSE)

  • 2005 28th International Spring Seminar on Electronics Technology (ISSE)

  • 2004 27th International Spring Seminar on Electronics Technology (ISSE)

  • 2003 26th International Spring Seminar on Electronics Technology (ISSE)

  • 2001 24th International Spring Seminar on Electronics Technology (ISSE)


2018 76th Device Research Conference (DRC)

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

  • 2017 75th Device Research Conference (DRC)

    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 DevicesMagnetic DevicesMemory DevicesModeling and Simulation of DevicesNanoscale DevicesOptoelectronic and Optical DevicesOrganic and Molecular DevicesPower DevicesQuantum DevicesSilicon, III-V, and 2D Electronic DevicesSpin-based DevicesThin Film and Amorphous DevicesTerahertz DevicesWide-bandgap Devices

  • 2016 74th Annual Device Research Conference (DRC)

    For over seventy years, the DRC has brought together leading scientists, researchers, and graduate students from various disciplines in academia and industry to share their latest research, insights and discoveries in the field of advanced semiconductor devices and technologies. The main goal of the conference is to stimulate an open and frank discussion of recent breakthroughs and advances in electronic/photonic devices. The university setting of the DRC encourages the exchange of creative ideas, provides significant networking opportunities, and facilitates an atmosphere that is conducive to discussing high-risk, transformative research. This year the DRC will be held on the campus of the University of Delaware from June 19nd to June 22th, 2016. As in past years, the technical program of the conference will consist of approximately 15 invited talks and 110 contributed presentations (between oral talks and posters).

  • 2015 73rd Annual Device Research Conference (DRC)

    For over seven decades, the DRC has brought together leading scientists, researchers, and students to share their latest discoveries in device science, technology and modeling. The DRC is coordinated with the Electronic Materials Conference (EMC) which is held during the second half of the same week. This recognizes the importance of interaction between device and electronic materials research and provides for fruitful exchange of information between attendees of both conferences. Key attractions include numerous plenary and invited presentations given by world-wide leaders; highly selective program of contributed papers on electronic/photonic device experiments/simulations; university setting encourages frank and open technical discussion of recent advances; great atmosphere for social events including lively evening “rump” sessions.

  • 2014 72nd Annual Device Research Conference (DRC)

    DRC is a leading forum for the discussion of new electronic, photonic, and magnetic devices, Discussion at the conference includes presentation of new devices and device designs, processing innovations, device simulation and testing, and material advances with device and system relevance.

  • 2013 71st Annual Device Research Conference (DRC)

    For the last seven decades, the Device Research Conference has brought together leading scientists, researchers, and graduate students from varied disciplines in academia and industry to share their latest research and discoveries in the field. The university setting of the conference encourages open technical discussion on recent breakthroughs and advances in device research, and provides a great atmosphere for social events. The technical program consists of invited, oral, and poster presentations. In addition, the conference will hold three evening rump sessions aimed at engaging the audience in vigorous discussions on important challenges and questions facing the device research community. The Device Research Conference has a tradition of strong graduate student participation. This is recognized by offering student travel support and a Best Student Paper Award.

  • 2012 70th Annual Device Research Conference (DRC)

    For more than sixty years, the Device Research Conference has brought together leading scientists, researchers, and graduate students from varied disciplines in academia and industry to share their latest research and discoveries in the field of electronic devices. The technical program will be a mix of invited, oral, and poster presentations. In addition, the conference will hold three evening rump sessions aimed at engaging the audience in a vigorous and charged discussion on the future directions of competing device technologies.

  • 2011 69th Annual Device Research Conference (DRC)

    The Device Research Conference brings together leading scientists, researchers, and graduate students from varied disciplines in academia and industry to share their latest research and discoveries in the field of electronic devices. The technical program will be a mix of invited, oral, and poster presentations.

  • 2010 68th Annual Device Research Conference (DRC)

    For more than sixty years, the Device Research Conference has brought together leading scientists, researchers, and graduate students from varied disciplines in academia and industry to share their latest research and discoveries in the field of electronic devices. The technical program will be a mix of invited, oral, and poster presentations. In addition, the conference will hold three evening rump sessions aimed at engaging the audience in a vigorous and charged discussion on the future directions of com

  • 2009 67th Annual Device Research Conference (DRC)

    For more than sixty years, the Device Research Conference has brought together leading scientists, researchers, and graduate students from varied disciplines in academia and industry to share their latest research and discoveries in the field of electronic devices. The technical program will be a mix of invited, oral, and poster presentations. In addition, the conference will hold three evening rump sessions aimed at engaging the audience in a vigorous and charged discussion on the future directions of com

  • 2008 66th Annual Device Research Conference (DRC)

    For more than sixty years, the Device Research Conference has brought together leading scientists, researchers, and graduate students from varied disciplines in academia and industry to share their latest research and discoveries in the field of electronic devices. The technical program will be a mix of invited, oral, and poster presentations. In addition, the conference will hold three evening rump sessions aimed at engaging the audience in a vigorous and charged discussion on the future directions of com

  • 2007 65th Annual Device Research Conference (DRC)

    For more than sixty years, the DRC has brought together leading scientists, researchers, and graduate students from varied disciplines in academia and industry to share their latest research and discoveries in the field of electronic devices. The technical program will be a mix of invited, oral and poster presentations. In addition, the conference will hold three evening rump sessions aimed at engaging the audience in a vigorous and charged discussion on the future directions.

  • 2006 64th Annual Device Research Conference (DRC)

  • 2005 63rd Annual Device Research Conference (DRC)

  • 2004 62nd Annual Device Research Conference (DRC)

  • 2003 61st Annual Device Research Conference (DRC)

  • 2002 60th Annual Device Research Conference (DRC)

  • 2001 59th Annual Device Research Conference (DRC)

  • 2000 IEEE 58th Annual Device Research Conference (DRC)

  • 1999 IEEE 57th Annual Device Research Conference (DRC)

  • 1998 IEEE 56th Annual Device Research Conference (DRC)

  • 1997 IEEE 55th Annual Device Research Conference (DRC)

  • 1996 IEEE 54th Annual Device Research Conference (DRC)


2018 Asia Communications and Photonics Conference (ACP)

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.

  • 2017 Asia Communications and Photonics Conference (ACP)

    Asia Communications and Photonics Conference (ACP) is currently the largest conference in Asia-Pacific region on optical communications, photonics, optical sensing and relevant optoelectronic technologies. ACP comes from APOC and AOE, and it has been held annually tracing back to 2001.

  • 2016 Asia Communications and Photonics Conference (ACP)

    ACP Track 1: Novel Fibers and Fiber-based DevicesACP Track 2: Optical Transmission Systems, Subsystems and TechnologiesACP Track 3:Network Architectures, Management and ApplicationsACP/POEM Joint Track 4: Optoelectronic devices and IntegrationACP/POEM Joint Track 5: Optical Signal Processing and Microwave PhotonicsACP/POEM Joint Track 6: Photonics for EnergyACP/POEM Joint Track 7: Ultrafast Photonics and Optical StorageACP/PIBM Joint Track 8: Photonics in Biology and Medicine

  • 2014 Asia Communications and Photonics Conference (ACP)

    Optoelectronic Materials, Devices, and IntegrationNovel Fibers and Fiber-based DevicesOptical Transmission Systems, Subsystems, and TechnologiesNetwork Architectures, Management, and ApplicationsBiophotonics and Optical SensorsDisplays, Solid-State Lighting, Photovoltaics, and Energy-Efficient Photonics

  • 2012 Asia Communications and Photonics Conference (ACP 2012)

    Asia Communications and Photonics Conference (ACP) is Asia's premier conference in the Pacific Rim for photonics technologies, including optical communications, biophotonics, nanophotonics, illumination and applications in energy.

  • 2011 Asia Communications and Photonics Conference and Exhibition (ACP 2011)

    Asia Communications and Photonics Conference and Exhibition (ACP) is Asia's premier conference and exhibition in the Pacific Rim for photonics technologies, including optical communications, biophotonics, displays, illumination and applications in energy. The event will take place 13-16 November 2011 in Shanghai, China, at the Shanghai International Convention Center & Oriental Riverside Hotel. The five technical societies -- SPIE, The IEEE Photonics Society, OSA, the Chinese Optical Society, and the Chinese Institute of Communications -- have joined together to co-sponsor the ACP 2011 conference. The Local Organizing Committee with participation from Shanghai Institute of Optics and Fine Mechanics and Shanghai University will be responsible for local organization of the technical conference. Wen Global Solutions will continue as owner of the exhibition.

  • 2010 Asia Communications and Photonics Conference and Exhibition (ACP 2010)

    The Asia Optical Fiber Communication & Optoelectronic Exposition & Conference (AOE) and Asia -Pacific Optical Communications (APOC) have merged their conferences and tradeshow under a new name: Asia Communications and Photonics Conference and Exhibition (ACP).The combined event creates Asia's premier conference and exhibition in the Pacific Rim for photonics technologies, including optical communications, biophotonics, displays, illumination and applications in energy.

  • 2009 Asia Communications and Photonics Conference and Exhibition (ACP 2009)

    The Asia Optical Fiber Communication & Optoelectronic Exposition & Conference (AOE) and Asia-Pacific Optical Communications (APOC) have merged their conferences and tradeshow under a new name: Asia Communications and Photonics Conference and Exhibition (ACP).The combined event creates Asia's premier conference and exhibition in the Pacific Rim for photonics technologies, including optical communications, biophotonics, displays, illumination and applications in energy.

  • 2008 Asia Optical Fiber Communication & Optoelectronic Exposition & Conference (AOE)

    Optical Fiber Communications and Optoelectronics

  • 2007 Asia Optical Fiber Communication & Optoelectronic Exposition & Conference (AOE)

  • 2006 Asia Optical Fiber Communication & Optoelectronic Exposition & Conference (AOE)


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Periodicals related to Electrochromism

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Components and Packaging Technologies, IEEE Transactions on

Component parts, hybrid microelectronics, materials, packaging techniques, and manufacturing technology.


Consumer Electronics, IEEE Transactions on

The design and manufacture of consumer electronics products, components, and related activities, particularly those used for entertainment, leisure, and educational purposes


Display Technology, Journal of

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.


Electrical Insulation Magazine, IEEE

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.


Electron Device Letters, IEEE

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.


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Most published Xplore authors for Electrochromism

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Xplore Articles related to Electrochromism

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The solid state electrochromic phenomenon and its applications to display devices

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 ...


Micro-CEC chip with gradient hydrophobic stationary phase (GHSP) provided by mwcnts nanocolumns-applied to protein analysis in MALDI-TOF-MS

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 ...


Polypyrrole-latex coatings on ito windows electrochemical and spectroelectrochemical studies

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 ...


Electrochromic voxel array for 3D display

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 ...


Electrochrotronics: highly functional devices operating in three realms

63rd Device Research Conference Digest, 2005. DRC '05., 2005

None


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  • The solid state electrochromic phenomenon and its applications to display devices

    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.

  • Micro-CEC chip with gradient hydrophobic stationary phase (GHSP) provided by mwcnts nanocolumns-applied to protein analysis in MALDI-TOF-MS

    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).

  • Polypyrrole-latex coatings on ito windows electrochemical and spectroelectrochemical studies

    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.

  • Electrochromic voxel array for 3D display

    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.

  • Electrochrotronics: highly functional devices operating in three realms

    None

  • Synthesis and optical properties of azo-substituted polythiophene

    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-state inorganic electrochromic display of WO<sub>3</sub> and NiO films with LiNbO<sub>3</sub> ion conductor

    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.

  • Molecular stacking of oriented porphyrin J-aggregates probed by dichroic electrochromism

    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.

  • The properties of alkoxy substituted polyaniline

    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.

  • Electrochemical polymerization of pyrrole with water-soluble polymeric electrolytes

    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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