Download or read book Methods to Adjust the Properties of Liquid Crystals Related Devices written by Hari Atkuri and published by . This book was released on 2012-09-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods to Adjust the Physical Properties of Liquid Crystals and Related Devices written by Hari Mukunda Atkuri and published by . This book was released on 2012 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid crystal devices are possible because of their large optical birefringence and dielectric anisotropy. They have become a part of modern life with the ubiquitous liquid crystal displays dominating the display industry. However, the need to enhance their physical properties is ever increasing and our research tried to provide as much information as possible to fill this void. In our recent studies, we showed by integrating non-liquid crystalline materials such as specialty particles or well-engineered polymers into a specific liquid crystal host, we could enhance the physical properties of the liquid crystal displays and devices. At the same time, it's possible to change how we perceive and use various types liquid crystals and related devices. In the dissertation, first, we present our work focusing on producing enhanced LC-polymer composites where we integrated custom-made polymer materials into unmodified 5CB to produce fast switching, high transparent LC-polymer composites. We developed high transmittance stressed liquid crystals (HTSLC) optimized for their ultra fast operation in the visible and NIR spectral range. The transmittance that is corrected for front and back surface reflections, of the device is more than 95% at 600nm and 99% in the near IR spectral range. The HTSLC produce large phase shifts. For example, an 18-micron thick HTSLC device can produce more than 1-micron phase shift in 1milli second. HTSLC devices have many potential optical applications for display, adaptable lenses and related electro-optic devices. In the dissertation, as second part, we present our work focusing on enhancing the physical properties of liquid crystals by integrating ferroelectric nano-particles into 5CB, where we achieve minimum of 2deg C and maximum of 4deg C increase in the clearing point of unmodified single component liquid crystal. In addition, we also present how to enhance the dielectric anisotropy and order parameter of the LC and present the results demonstrating it. Throughout our research, we also present how to produce the particle suspensions or LC-polymer composites or LC-polymer composites and related devices followed by presenting their characteristics and immediate possible applications.

Download or read book Physical Properties of Liquid Crystals written by George W. Gray and published by John Wiley & Sons. This book was released on 2009-08-14 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is a unique compendium of knowledge on all aspects of the physics of liquid crystals. In over 500 pages it provides detailed information on the physical properties of liquid crystals as well as the recent theories and results on phase transitions, defects and textures of different types of liquid crystals. An in-depth understanding of the physical fundamentals is a prerequisite for everyone working in the field of liquid crystal research. With this book the experts as well as graduate students entering the field get all the information they need.

Download or read book Liquid Crystal Applications And Uses Volume 1 written by Birendra Bahadur and published by World Scientific. This book was released on 1990-09-15 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews comprehensively the technological, scientific, artistic and medical applications of liquid crystals. It starts with the basics of liquid crystals and covers electro-optical, thermo-optical, colour, polymeric, lyotropic, and scientific applications of liquid crystalline materials. It discusses the fabrication and operational principles of a full range of liquid crystal displays including dynamic scattering, twisted nematic, supertwisted nematic, dichroic, smectic A, ferroelectric, polymer dispersed, light valve, active matrix, etc., in detail. It also covers the emerging applications of liquid crystals such as optical computing, nonlinear optics, decorative and visual arts. The detailed chapters on classification, theory, chemical structure, physical properties and surface alignment of liquid crystals facilitate the basic understanding of the science behind LCDs and other uses of liquid crystals. The chapters on liquid crystal polymers and lyotropic liquid crystals, give deep insight into these areas. The potential uses and applications are also described in detail.

Download or read book Structure and Properties of Liquid Crystals written by Lev M. Blinov and published by Springer Science & Business Media. This book was released on 2010-10-26 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book by Lev M. Blinov is ideal to guide researchers from their very first encounter with liquid crystals to the level where they can perform independent experiments on liquid crystals with a thorough understanding of their behaviour also in relation to the theoretical framework. Liquid crystals can be found everywhere around us. They are used in virtually every display device, whether it is for domestic appliances of for specialized technological instruments. Their finely tunable optical properties make them suitable also for thermo-sensing and laser technologies. There are many monographs written by prominent scholars on the subject of liquid crystals. The majority of them presents the subject in great depth, sometimes focusing on a particular research aspect, and in general they require a significant level of prior knowledge. In contrast, this books aims at an audience of advanced undergraduate and graduate students in physics, chemistry and materials science. The book consists of three parts: the first part, on structure, starts from the fundamental principles underlying the structure of liquid crystals, their rich phase behaviour and the methods used to study them; the second part, on physical properties, emphasizes the influence of anisotropy on all aspects of liquid crystals behaviour; the third, focuses on electro-optics, the most important properties from the applications standpoint. This part covers only the main effects and illustrates the underlying principles in greater detail. Professor Lev M. Blinov has had a long carrier as an experimentalist. He made major contributions in the field of ferroelectric mesophases. In 1985 he received the USSR state prize for investigations of electro-optical effects in liquid crystals for spatial light modulators. In 1999 he was awarded the Frederiks medal of the Soviet Liquid Crystal Society and in 2000 he was honoured with the G. Gray silver medal of the British Liquid Crystal Society. He has held many visiting academic positions in universities and laboratories across Europe and in Japan.

Download or read book The Physics and Chemistry of Liquid Crystal Devices written by Gerald J. Sprokel and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over 100 scientists met at the IBM Research Laboratory in San Jose. California for a symposium on the Physics and Chemistry of Liquid Crystal Devices. The two-day meeting was intellectually stimulating with excellent oral presentations and with person-to-person discussions. The applications of liquid crystals have developed dramatically in the past ten years. In these few years, they have moved from being a laboratory curiosity to products in the market place. The first commercial application (1940's) of liquid crystals was the preparation of a light polarizer. The second commercial application was their use as temperature sensors. The third major application of liquid crystals dealt with commercial displays. Other current applications include polymeric and graphitic fibers and light attenuators. The future of liquid crystals looks very promising indeed. One can expect to see new fibers of qualities which will be superior to those presently known. Graphitic fibers or other physical forms of graphitic materials will be used as catalytic surfaces for chemical synthesis. In the display area. one can expect to see television screens using liquid crystals. Larger displays than are now used in wrist watches and pocket calculators will become available. Liquid crystals using color displays will become commercially practical. Watches. calculators and television screens will have color.

Download or read book Liquid Crystals and Related Materials II written by Yuan Ming Huang and published by Trans Tech Publications Ltd. This book was released on 2011-11-15 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings comprise a selection of the peer-reviewed papers that were presented at the 2nd International Symposium on Liquid Crystals: Science and Technology. Volume is indexed by Thomson Reuters CPCI-S (WoS). The topics of the 102 papers cover: the physics of liquid crystals, the chemistry of liquid crystals, applications of liquid crystals and related materials. This work will provide guidance to physicists, chemists and materials scientists working in the field of liquid crystals.

Download or read book Unconventional Liquid Crystals and Their Applications written by Wei Lee and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-07-19 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work focuses on recent developments of the rapidly evolving field of Non-conventional Liquid Crystals. After a concise introduction it discusses the most promising research such as biosensing, elastomers, polymer films , photoresponsive properties and energy harvesting. Besides future applications it discusses as well potential frontiers in LC science and technology.

Download or read book Physical Properties of Liquid Crystals written by David A. Dunmur and published by . This book was released on 2001 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Liquid Crystals 8 Volume Set written by John W. Goodby and published by John Wiley & Sons. This book was released on 2014-04-14 with total page 5240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much more than a slight revision, this second edition of the successful "Handbook of Liquid Crystals" is completely restructured and streamlined, with updated as well as completely new topics, 100% more content and a new team of editors and authors. As such, it fills the gap for a definitive, single source reference for all those working in the field of organized fluids and will set the standard for the next decade. The Handbook's new structure facilitates navigation and combines the presentation of the content by topic and by liquid-crystal type: A fundamentals volume sets the stage for an understanding of the liquid crystal state of matter, while individual volumes cover the main types and forms, with a final volume bringing together the diverse liquid crystal phases through their applications. This unrivaled, all-embracing coverage represents the undiluted knowledge on liquid crystals, making the Handbook a must-have wherever liquid crystals are investigated, produced or used, and in institutions where their science and technology is taught. Also available electronically on Wiley Online Library, www.wileyonlinelibrary.com/ref/holc Volume 1: Fundamentals of Liquid Crystals Volume 2: Physical Properties and Phase Behavior of Liquid Crystals Volume 3: Nematic and Chiral Nematic Liquid Crystals Volume 4: Smectic and Columnar Liquid Crystals Volume 5: Non-Conventional Liquid Crystals Volume 6: Nanostructured and Amphiphilic Liquid Crystals Volume 7: Supermolecular and Polymeric Liquid Crystals Volume 8: Applications of Liquid Crystals

Download or read book Physical Properties and Phase Behavior of Liquid Crystals written by John W. Goodby and published by . This book was released on 2014 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Liquid Crystal Elastomers written by Mark Warner and published by Oxford University Press. This book was released on 2007-04-05 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text is a primer for liquid crystals, polymers, rubber and elasticity. It is directed at physicists, chemists, material scientists, engineers and applied mathematicians at the graduate student level and beyond.

Download or read book Photoalignment of Liquid Crystalline Materials written by Vladimir G. Chigrinov and published by John Wiley & Sons. This book was released on 2008-09-15 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photoalignment possesses significant advantages in comparison with the usual ‘rubbing’ treatment of the substrates of liquid crystal display (LCD) cells as it is a non-contact method with a high resolution. A new technique recently pioneered by the authors of this book, namely the photo-induced diffusion reorientation of azodyes, does not involve any photochemical or structural transformations of the molecules. This results in photoaligning films which are robust and possess good aligning properties making them particularly suitable for the new generation of liquid crystal devices. Photoalignment of Liquid Crystalline Materials covers state-of-the-art techniques and key applications, as well as the authors’ own diffusion model for photoalignment. The book aims to stimulate new research and development in the field of liquid crystalline photoalignment and in so doing, enable the technology to be used in large scale LCD production. Key features: Provides a full examination of the mechanisms of photoalignment. Examines the properties of liquid crystals during photoalignment, with particular reference made to the effect on their chemical structure and stability. Considers the most useful photosensitive materials and preparation procedures suitable for liquid crystalline photoalignment. Presents several methods for photoalignment of liquid crystals. Compares various applications of photoalignment technology for in-cell patterned polarizers and phase retarders, transflective and micro displays, security and other liquid crystal devices. Through its interdisciplinary approach, this book is aimed at a wide range of practising electrical engineers, optical engineers, display technologists, materials scientists, physicists and chemists working on the development of liquid crystal devices. It will also appeal to researchers and graduate students taking courses on liquid crystals or display technologies. The Society for Information Display (SID) is an international society, which has the aim of encouraging the development of all aspects of the field of information display. Complementary to the aims of the society, the Wiley-SID series is intended to explain the latest developments in information display technology at a professional level. The broad scope of the series addresses all facets of information displays from technical aspects through systems and prototypes to standards and ergonomics

Download or read book Liquid Crystal Photonics written by Vladimir G. Chigrinov and published by Nova Science Publishers. This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid crystal devices for photonics applications is a "hot topic" of research. This book provides engineers, physicists, and designers with the most up-to-date descriptions of the dielectric, optical, and viscoelastic properties of LCs; photonics applications; and the knowledge to design better performing liquid crystal photonic and display devices (LCD). The book gives the knowledge needed to optimise LC cell geometry, select proper display configurations, and develop photonics LC applications. The book is intended for a wide range of engineers, scientists and managers, who are willing to understand the "hot" topics of LC applications in photonics and displays. Liquid crystal physical properties, geometry of liquid crystal cell and characteristics of electrooptical effects to choose and/or to develop liquid crystal photonics devices with optimal parameters are highlighted. Special attention was paid to photoalignment technology for LC photonics and emergent display devices. University researchers and students, who are specialised in the condensed matter physics and liquid crystal device developments will also find some useful information in this book.

Download or read book Alignment Technology and Applications of Liquid Crystal Devices written by Kohki Takatoh and published by CRC Press. This book was released on 2005-07-21 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alignment phenomena are characteristic of liquid crystalline materials, and understanding them is critically important in understanding the essential features and behavior of liquid crystals and the performance of Liquid Crystal Devices (LCDs). Furthermore, in LCD production lines, the alignment process is of practical importance. Alignment Technologies and Applications of Liquid Crystal Devices demonstrates both the fundamental and practical aspects of alignment phenomena in liquid crystals. The physical basis of alignment phenomena is first introduced in order to aid the understanding of the various physical phenomena observed in the interface between liquid crystalline materials and alignment layer surfaces. Methods for the characterization of surfaces, which induce the alignment phenomena, and of the alignment layer itself are introduced. These methods are useful for the research of liquid crystalline materials and devices in academic research as well as in industry. In the practical sections, the alignment methods used in the LCD production lines are introduced with various other trials for the alignment technologies. LCD performances are also discussed in relation to alignment phenomena. The authors have a wide range of experience in both academic research and in industry. This book will be of interest to researchers and engineers working in the LCD industry, and for physics and chemistry researchers studying liquid crystalline materials.

Download or read book New Developments in Liquid Crystals and Applications written by P. K. Choudhury and published by Nova Science Publishers. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many fascinating applications of liquid crystals -- a material that possesses behaviour in between the crystalline solid and the liquid phases -- have been reported by the RandD workers. These materials exhibit amazing features that make them indispensable for versatile usage. Liquid crystal based flat display panels are now found in mass volume in use as television and computer monitors. Apart from this, liquid crystals can be used in sensing and communication systems. The aim of this book is three-fold: (i) to make the expert researchers aware of the advancements in several areas of liquid crystal technology, (ii) to fuel the novice researchers interest through varieties of research directions, and (iii) to give a glimpse of the merged ideas to multi-disciplinary researchers for conceptual development of novel devices. Starting from the introduction of liquid crystals, this book covers topics ranging from nanoparticle synthesis to their varieties and physical and chemical properties along with their possible optics and electronics oriented applications. These include chemical bonding in liquid crystals, the use of liquid crystals in nanoparticle synthesis, the effects of liquid crystals on the thermal isomerisation of azoderivatives, sensing organosulphur compounds by liquid crystal supported chemically functionalised surfaces, electro-optic behaviour of liquid crystals and their applications in dynamic holographic correctors, optics of chiral liquid crystals, electromagnetic behaviour of liquid crystal based optical fibres and applications in 3D electronic displays. These topics are presented in nine chapters written by expert scientists in their respective areas of research in liquid crystals. Some of the chapters are devoted to the physics and chemistry of liquid crystals, and some touch upon their interesting applications. It is expected that the book will be of immense use for novice, expert and multi-disciplinary researchers in universities and research institutions.

Download or read book Surfaces and Interfaces of Liquid Crystals written by Theo Rasing and published by Springer. This book was released on 2010-11-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the state of the art of our understanding of liquid-crystal interfaces on a molecular level. The interactions of liquid crystal molecules with a surface play an essential role in the operation of liquid crystal displays (LCD's) and other LC devices that are based on the controllable anchoring of LC molecules on polymer coated surfaces. This book addresses the microscopic interaction between a macromolecule (liquid crystal, polymer) and a wall, using state of the art surface and interface-sensitive experimental techniques, such as Atomic Force Microscopy (AFM), Scanning Tunneling Microscopy (STM), Linear and Nonlinear Optical Microscopy and (Dynamic) Light Scattering (DLS). These experimental techniques were complemented with computer simulations and supra molecular chemistry methods to develop controllable polymeric surfaces.