Download or read book Controlling the Morpholgical and Electro optical Properties of Polymer Dispersed Liquid Crystals written by and published by . This book was released on 2008 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liquid Crystal Dispersions written by Paul S. Drzaic and published by World Scientific. This book was released on 1995 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer-dispersed liquid crystal (PDLC) materials are of interest both for their potential in display technology and the fascinating science found in liquid crystals confined to small cavities. Liquid Crystal Dispersions is a comprehensive overview of the science and technology of this new class of materials. Topics covered include formation of PDLC devices, a catalog of droplet structures and transformations, device electro-optical properties, and applications. Liquid Crystal Dispersions will be of value to the nonspecialists keen on gaining an overview of this new field, as well as to specialists interested in a comprehensive review of work in this area.
Download or read book Fast Switching Polymer Stabilized Liquid Crystal Devices written by Sang Hwa Kim and published by . This book was released on 2004 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of the dissertation is to develop polymer stabilized liquid crystals applications with the aim of fast switching liquid crystal devices. We have scrutinized the design of the experimental setup and the optimization of the polymerization condition. We evaluate and discuss various PSLC systems, including the study of morphology of polymer networks and the electro-optical characteristics. Optically compensated bend (OCB) nematic or pi-cell is known to exhibit a fast response time and wide viewing angle with compensated films. But this bend mode has a splay-bend transition problem. These splay and bend states are topologically distinct and for real display modes it should be operated with bend mode without splay state. We introduced a polymer stabilization of the bend nematic mode in which we used polymer network acts as the volume surfaces to stabilize the bend state of the nematic liquid crystal. The switching time of a polymer-stabilized bend nematic display shows a fast rise time of 1.2ms and a 8.8ms decay time, which is sufficiently fast for video display applications. A liquid crystal blazed grating having a prismatic polymer microstructure has been developed using polymer-stabilized optical pattern forming state of a cholesteric liquid crystal. The prismatic polymer structure is formed by photo-induced localization and polymerization of a small concentration of monomer onto one substrate nearest to the UV The light incident at different angles from the normal. Using these method periodical one-dimensional patterns with a prismatic shape of polymer can be structured at the surface. The optical diffraction properties of the gratings were evaluated by the application of electric field and light incident angles, corroborate the blazed grating of asymmetric reflective index modulation. The dissertation continues on the exploration of an application of the short pitch cholesteric liquid crystals. Uniformly lying helix (ULH) of a cholesteric liquid crystal is formed with an applied electric field and temperature to exhibit the flexoelectric effect. For flexoelectro optic device applications, a problem arises in that the unwinding of the cholesteric helix is generally not completely reversible, and can produce degradation of alignment. As a result, the electro optic device does not fully return to the ULH texture after the applied electric field is removed. To address such a problem, we employ the polymer stabilization technique to stabilize the uniform lying helix texture. By using a small concentration of polymer we are able to stabilize ULH texture without the application of an electric field and lead to a device with two switching modes, amplitude (flexoelectric, at low field) and phase (dielectric, at high field) modulation, exhibiting a sub-millisecond response time.
Download or read book Nonlinear Optical Properties of Liquid Crystals and Polymer Dispersed Liquid Crystals written by Francesco Simoni and published by World Scientific. This book was released on 1997 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is devoted to a detailed treatment of the nonlinear optical properties of liquid crystals. The basic concepts of director optical reorientation and thermal nonlinearities are presented showing the fundamental theoretical approaches and describing the main experimental observations. The presentation is self-consistent and tutorial although the subject matter is of current research interest.The last part of the book deals with more recent results on new composite materials: Polymer Dispersed Liquid Crystals (PDLC). A general presentation of the optical properties is given and the observations of several nonlinear optical effects are reported.
Download or read book Phase Separation and Electro optical Properties of Polymer Dispersed Liquid Crystal Films written by Chang-Hoon Song and published by . This book was released on 1994 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liquid Crystals and Display Technology written by Morteza Sasani Ghamsari and published by BoD – Books on Demand. This book was released on 2020-10-07 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid crystals have attracted scientific attention for potential applications in advanced devices. Display technology is continuously growing and expanding and, as such, this book provides an overview of the most recent advances in liquid crystals and displays. Chapters cover such topics as nematic liquid crystals, active matrix organic light-emitting diodes, and tetradentate platinum(II) emitters, among others.
Download or read book Polymer modified Liquid Crystals written by Ingo Dierking and published by Royal Society of Chemistry. This book was released on 2019-01-03 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describing all aspects of polymer-dispersed and polymer-stabilized liquid crystals, this book is a must-have resource for practitioners in the area.
Download or read book An Overview of Polymer Dispersed Liquid Crystals Composite Films and Their Applications written by Rajendrasing Rajesing Deshmukh and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inherent and incredible properties of liquid crystals (LC) such as optical and dielectric anisotropy make them special candidates for flat-panel display devices; bi-stable reflective displays; high-definition spatial light modulators; switchable windows; haze-free normal- and reverse-mode light shutter devices; projectors; optical, thermal and strain sensors; tuneable lenses; etc. Non-linear response of LC material to the applied electric field is very useful in the above-mentioned applications. When a low molecular weight LC material is doped in a high molecular weight polymer matrix to obtain polymer-dispersed liquid crystal (PDLC) films, it offers flexibility and mechanical strength (structural stabilization) to the composite films,ÄîPDLC devices. Depending upon the concentration of monomer/polymer, these composite films are classified as polymer-stabilized liquid crystal (PSLC), PDLC and holographic PDLC (HPDLC) films. Depending upon the process conditions, we get phase-separated randomly dispersed micron-sized LC droplets in a continuous polymer matrix. These nematic LC droplets exhibit light scattering transmission properties depending on their orientation, which can be controlled by external electric field. This chapter gives deep insight about operating principle, phase separation techniques involved, alignment of LC and controlling LC droplet morphology of PDLC films to obtain desired properties. In order to improve the optical efficiency and to obtain the desired result from PDLC films, various guest entities such as dye and nanomaterials are doped in the host LC material. This chapter also accounts for various possible LC dopants desired for improving the electro-optic (EO) and dielectric properties of PDLC devices. Various applications of PDLC composite films are also described in this chapter.
Download or read book Optical Properties of Functional Polymers and Nano Engineering Applications written by Vaibhav Jain and published by CRC Press. This book was released on 2018-09-03 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive text provides a basic introduction to the optical properties of polymers, as well as a systematic overview of the latest developments in their nano engineering applications—including L-GRIN lenses, 3D holographic displays, optical gene detection, and more. Covering an increasingly important class of materials relevant not only in academic research but also in industry, this book emphasizes the importance of nano engineering in improving the fundamental optical properties of the functional polymers, elaborating on high-level research while thoroughly explaining the underlying principles.
Download or read book Electro optical Properties of Polymer Stabilized Liquid Crystal Networks written by Solmar Mora and published by . This book was released on 1997 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Applications of Liquid Crystals written by L Vicari and published by CRC Press. This book was released on 2016-04-19 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there has been increasing activity in the research and design of optical systems based on liquid crystal (LC) science. Bringing together contributions from leading figures in industry and academia, Optical Applications of Liquid Crystals covers the range of existing applications as well as those in development. Unique in its thorou
Download or read book Transparent Conductive Materials written by David Levy and published by John Wiley & Sons. This book was released on 2019-04-29 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Edited by well-known pioneers in the field, this handbook and ready reference provides a comprehensive overview of transparent conductive materials with a strong application focus. Following an introduction to the materials and recent developments, subsequent chapters discuss the synthesis and characterization as well as the deposition techniques that are commonly used for energy harvesting and light emitting applications. Finally, the book concludes with a look at future technological advances. All-encompassing and up-to-date, this interdisciplinary text runs the gamut from chemistry and materials science to engineering, from academia to industry, and from fundamental challenges to readily available applications.
Download or read book Liquid Crystal Dispersions written by Paul S Drzaic and published by World Scientific. This book was released on 1995-09-18 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer-dispersed liquid crystal (PDLC) materials are of interest both for their potential in display technology and the fascinating science found in liquid crystals confined to small cavities. Liquid Crystal Dispersions is a comprehensive overview of the science and technology of this new class of materials. Topics covered include formation of PDLC devices, a catalog of droplet structures and transformations, device electro-optical properties, and applications. Liquid Crystal Dispersions will be of value to the nonspecialists keen on gaining an overview of this new field, as well as to specialists interested in a comprehensive review of work in this area.
Download or read book Fundamentals of Liquid Crystal Devices written by Deng-Ke Yang and published by John Wiley & Sons. This book was released on 2014-12-03 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid Crystal Devices are crucial and ubiquitous components of an ever-increasing number of technologies. They are used in everything from cellular phones, eBook readers, GPS devices, computer monitors and automotive displays to projectors and TVs, to name but a few. This second edition continues to serve as an introductory guide to the fundamental properties of liquid crystals and their technical application, while explicating the recent advancements within LCD technology. This edition includes important new chapters on blue-phase display technology, advancements in LCD research significantly contributed to by the authors themselves. This title is of particular interest to engineers and researchers involved in display technology and graduate students involved in display technology research. Key features: Updated throughout to reflect the latest technical state-of-the-art in LCD research and development, including new chapters and material on topics such as the properties of blue-phase liquid crystal displays and 3D liquid crystal displays; Explains the link between the fundamental scientific principles behind liquid crystal technology and their application to photonic devices and displays, providing a thorough understanding of the physics, optics, electro-optics and material aspects of Liquid Crystal Devices; Revised material reflecting developments in LCD technology, including updates on optical modelling methods, transmissive LCDs and tunable liquid crystal photonic devices; Chapters conclude with detailed homework problems to further cement an understanding of the topic.
Download or read book Liquid Crystalline Polymers written by Vijay Kumar Thakur and published by Springer. This book was released on 2015-11-16 with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces anisotropic innovations in liquid crystalline polymers as well as new nanocomposite materials and testing techniques. The authors detail the newest discoveries of material properties, material types and phases, and material characterization. This interdisciplinary work creates valuable links that strengthen the approach to the evolving field of liquid crystalline polymers/ materials.
Download or read book Polymer modified Liquid Crystals written by Ingo Dierking and published by Royal Society of Chemistry. This book was released on 2019-01-03 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging soft matter physics, materials science and engineering, polymer-modified liquid crystals are an exciting class of materials. They represent a vibrant field of research, promising advances in display technologies, as well as non-display uses. Describing all aspects of polymer-dispersed and polymer-stabilized liquid crystals, the broad coverage of this book makes it a must-have resource for anyone working in the area. The reader will find expert accounts covering basic concepts, materials synthesis and polymerization techniques, properties of various dispersed and stabilized phases, and critical overviews of their applications. Written by leaders in the field, this book provides a state-of-the-art treatment of the topic. It will be essential reading for graduate students, as well as academic and industrial researchers needing an up-to-date guide to the field.
Download or read book Investigations Into the Morphological Control of Polymer Dispersed Liquid Crystal Materials written by Richard Alan Paul Smith and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
