The Physics And Application Of Liquid Crystal Ferroelectric Particles Colloids

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The Physics And Application Of Liquid Crystal Ferroelectric Particles Colloids

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Author : Fenghua Li
language : en
Publisher:
Release Date : 2008

The Physics And Application Of Liquid Crystal Ferroelectric Particles Colloids written by Fenghua Li and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Colloids categories.

The liquid crystalline phases have been of great fundamental interest and at the same time found enormous recent application in display and photonic devices. Much effort has been put into developing new type liquid crystals, with fast response times, higher birefringence, low driving voltage and so on, but the chemical synthesis of obtaining such LCs can often be difficult. By contrast, this thesis utilizes ferroelectric colloidal dispersions to dope liquid crystals. Colloids in liquid crystalline hosts present new physical features as the anisotropic intermolecular interactions compete against colloidal interactions. These dilute colloids are stable since the particles were coated with surfactant. Most particles remain separated at a certain stable distance. Because the particles are so small, they do not disturb the LC orientation. The colloids therefore are macroscopically homogeneous and appear similar to a pure liquid crystal with no visible evidence of the dispersed particles. At the same time, nanoparticles are large enough to maintain their ferroelectricity and integrate these intrinsic properties with the LC host. In this thesis, I focus on physics of these ferroelectric liquid crystals colloids and describe a new non-synthetic method of modifying the properties of existing liquid crystals by doping them with surfactant-processed ferroelectric nanoparticles. Special attention was paid to investigate the electro-optic properties of ferroelectric nematic colloids for display applications. At very low concentration, sub-micron ferroelectric particles show very fascinating enhancement to liquid crystal mixtures, such as, higher birefringence ([delta]n), higher dielectric anisotropy, and T[subscript ni] temperature and so on. These results indicate that low concentrated ferroelectric nanoparticles may enhance the orientational ordering of nematic liquid crystals. Traditionally, by changing the molecular structure, the molecular type, and polarizability, people can synthesize and modify the long-rang macroscopic properties of LC mixtures. Not only the time and effort are huge, but also the results of synthesis, such as clearing point and viscoelastic properties, can not be predicted. Doping ferroelectric nanoparticles is a simple and effective approach to control and modify LC properties.

Liquid Crystals With Nano And Microparticles

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Author : Jan P F Lagerwall
language : en
Publisher: World Scientific
Release Date : 2016-10-10

Liquid Crystals With Nano And Microparticles written by Jan P F Lagerwall and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-10 with Science categories.

While liquid crystals are today widely known for their successful application in flat panel displays (LCDs), academic liquid crystal research is more and more targeting situations where these anisotropic fluids are put to completely different use, in varying contexts. A particularly strong focus is on colloidal liquid crystals, where particles, bubbles or drops are dispersed in a liquid crystal phase. The liquid crystal can act as a host phase, with the inclusions constituting foreign guests that disturb the local order in interesting ways, often resulting in large-scale positional arrangement and/or uniform alignment of the guests. But it may also be formed by solid particles themselves, if these are of nanoscale dimensions and of disc- or rod-shape, and if they are suspended in an isotropic liquid host at sufficient concentration. This book aims to cover both the modern research tracks, gathering pioneering researchers of the different subfields to give a concise overview of the basis as well as the prospects of their respective specialties. The scope spans from curiosity-driven fundamental scientific research to applied sciences. Over the course of the next decade, the former is likely to generate new tracks of the latter type, considering the exploratory and productive phase of this young research field. Contents:Introduction (G Scalia and J P F Lagerwall)Volume 1:Fundamentals:A Phenomenological Introduction to Liquid Crystals and Colloids (J P F Lagerwall)Nanoparticle Dispersions: A Colloid and Polymer Solution Perspective (P van der Schoot)Nematic Liquid Crystals Doped with Nanoparticles: Phase Behavior and Dielectric Properties (M A Osipov and M V Gorkunov)Methods for Studying Liquid Crystals and Their Inclusions:Conventional and Nonlinear Optical Microscopy of Liquid Crystal Colloids (T Lee and I I Smalyukh)X-Ray Scattering (G Ungar, Z Chen and X Zeng)Raman Spectroscopy (H F Gleeson) Manipulation of Inclusions with Optical Tweezers (M Skarabot)Atomic Force Microscopy on Liquid Crystals (C Bahr and B Schulz)Micron Scale Inclusions in Liquid Crystals:Solid Microparticles in Nematic Liquid Crystals (Igor Muševič) Inclusions in Freely Suspended Smectic Films (R Stannarius and K Harth)Liquid Crystal-Enabled Electrophoresis and Electro-Osmosis (O D Lavrentovich)Volume 2:Nanoparticles in Liquid Crystals:Nanoparticles in Discotic Liquid Crystals (S Kumar)Metallic and Semiconducting Nanoparticles in LCs (A Sharma, M Urbanski, T Moria, H-S Kitzerow and T Hegmann)Inorganic Nanotubes and Nanorods in Liquid Crystals (I Drevenšek-Olenik)Liquid Crystals from Mesogens Containing Gold Nanoparticles (W Lewandowski and E Gorecka)Carbon Nanotubes in Thermotropic Low Molar Mass Liquid Crystals (S Schymura, J Park, I Dierking and G Scalia)Carbon Nanotubes Dispersed in Liquid Crystal Elastomers (Y Yang and Y Ji)Ferromagnetic and Ferroelectric Nanoparticles in Liquid Crystals (Y Reznikov, A Glushchenko and Y Garbovskiy)Nanoparticle Guests in Lyotropic Liquid Crystals (S Dölle, J H Park, S Schymura, Hyeran Jo, G Scalia and J P F Lagerwall)Control of Nanoparticle Self-Assemblies Using Distorted Liquid Crystals (E Lacaze and D Coursault)Nanoparticles and Networks Created Within Liquid Crystals (S-W Kang and S Kundu)Liquid Crystals Formed by Nanoparticle Suspensions:Nematic Phase Formation in Suspensions of Carbon Nanotubes (C Zakri and Ph Poulin)Nematic Phase Formation in Suspensions of Graphene Oxide (N Fresneau and S Campidelli)Electro-Optical Switching of Liquid Crystals of Graphene Oxide (J Song)Liquid Crystalline Phases in Suspensions of Pigments in Non-Polar Solvent (S Klein, R Richardson and A Eremin)Cholesteric Liquid Crystal Formation in Suspensions of Cellulose Nanocrystals (C Honorato-Rios, J Bruckner, C Schütz, S Wagner, Z Tosheva, L Bergström and J P F Lagerwall)Subject Index Readership: This book would be beneficial as a reference work for researchers active in the field as well as for other researchers aiming to enter the field.

The Physics Of Ferroelectric And Antiferroelectric Liquid Crystals

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Author : Robert Blinc
language : en
Publisher: World Scientific
Release Date : 2000-07-25

The Physics Of Ferroelectric And Antiferroelectric Liquid Crystals written by Robert Blinc and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-07-25 with Science categories.

This book presents the basic physics of ferroelectric and antiferroelectric liquid crystals in a simple and transparent way. It treats both the basic and the applied aspects of ferroelectric and antiferroelectric liquid crystal research, starting from the discovery of ferroelectricity in liquid crystals in 1975 and ending with the resonant X-ray experiment in ferrielectric and antiferrielectric phases in 1998. Particular attention is paid to the optical properties, electrooptic effects, phase transitions and experimental methods used in liquid crystal research. Special chapters are devoted to dielectric spectroscopy, light scattering, NMR, STM and AFM in complex fluids. The more than 300 illustrations help to present the basic physics of liquid crystalline ferroelectrics and antiferroelectrics in a way that can be easily followed by students, engineers and scientists dealing with liquid crystal research.

Ferroelectric Liquid Crystals

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Author : J. W. G. Goodby
language : en
Publisher:
Release Date : 1991

Ferroelectric Liquid Crystals written by J. W. G. Goodby and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Ferroelectric crystals categories.

Liquid Crystals From Modified Phases To Applications 2014

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Author : João Luis Maia Figueirinhas
language : en
Publisher: MDPI
Release Date : 2018-10-08

Liquid Crystals From Modified Phases To Applications 2014 written by João Luis Maia Figueirinhas and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-08 with categories.

This book is a printed edition of the Special Issue "Liquid Crystals" that was published in Materials

Liquid Crystal Devices

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Author : Vladimir G. Chigrinov
language : en
Publisher: Artech House Publishers
Release Date : 1999

Liquid Crystal Devices written by Vladimir G. Chigrinov and has been published by Artech House Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Science categories.

Select more accurate liquid crystal (LC) mixtures for various applications and design better performing liquid crystal devices (LCD)s in less time with this practical resource that provides an expert account of the fundamental physics of LCs and its practical application to device design. Liquid Crystal Devices: Physics and Applications provides engineers, physicists, and device designers with the most up-to-date descriptions of the dielectric, optical, and viscoelastic properties of LCs, including their relation to molecular structure, mixture content, and material characteristics

Introduction To Liquid Crystals

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Author : Peter J. Collings
language : en
Publisher: CRC Press
Release Date : 2017-09-06

Introduction To Liquid Crystals written by Peter J. Collings and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-06 with Science categories.

This text relies on only introductory level physics and chemistry as the foundation for understanding liquid crystal science. Liquid crystals combine the material properties of solids with the flow properties of fluids. As such they have provided the foundation for a revolution in low- power, flat-panel display technology LCDs. In this book, the essential elements of liquid crystal science are introduced and explained from the perspectives of both the chemist and the physicist.; The text begins with an historical account of the discovery of liquid crystals and continues with a description of how different phases are generated and how different molecular architectures affect liquid crystalline properties. The rest of the book is concerned with understanding and explaining the properties of the various types of liquid crystals, and in the final part of the book, the technology of LCDs is discussed and illustrated.

Dielectric Properties Of Liquid Crystals

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Author : Zbigniew Galewski
language : en
Publisher:
Release Date : 2007-01-01

Dielectric Properties Of Liquid Crystals written by Zbigniew Galewski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-01-01 with Liquid crystals categories.

Introduction - This book, consisting of 10 chapters, should be treated as a complement that brings the reader up to date with the latest contributions to the rich literature on liquid crystals. A prominent place in this literature is occupied by the dielectric properties which are important in estimation of usefulness of these materials and in understanding the molecular processes determining various mesophases. In the field of dielectrics in general, and in connection with the structure and phase transitions the entries in references [1-14] can be recommended. With respect to general aspects of liquid-crystalline properties and molecular dynamics one can point out the references [15-36]. Most of them contain as well chapters on dielectric properties. In addition there is a number of books and monographs related strictly to the dielectric properties of liquid crystals, in particular references [37-45]. For the readers less familiar with this topic and interested in the basic knowledge of dielectric aspects of liquid crystals one can suggest the reviews [46-48]. Basic difference between properties of isotropic liquid and liquid crystal lies in the existence in the latter case of at least one degree of order. The ordering can be also considered with respect to a crystalline phase. Thus introducing at least one degree of disorder (rotational or translational) causes the occurrence of a mesophase which, however, is not identical with the liquid-crystalline phase. If the mesophase is to be liquid-crystalline, it should possess at least one translational degree of disorder. The disorder connected with further degrees of freedom leads to rich polymorphism. The most characteristic feature of liquid-crystalline phases is a precisely defined degree of disorder of molecules building these phases and their anisotropy which is exhibited in molecular structure and all measurable physical parameters such as polarizability. This is the reason why such phases are also called anisotropic liquids. The insertion into the molecules that form mesophases of fragments either chiral or influencing antagonistically already present fragments (e.g. by replacing one alkyl group by perfluorinated chain) leads to additional interactions which compete with interactions responsible for the stability of liquid-crystalline phases. This causes the frustration phenomena, i.e. the mutual overlapping of interactions frequently responsible for opposite effects. These induced phenomena conduce to unexpected structures (banana-type or columnar-type mesophases) and properties such as helicity, ferroelectricity or antiferroelectricity. Of particular interest seem to be ferroelectric liquid crystals (chiral tilted smectics such as SmC*, SmI* and others) showing collective modes: tilt fluctuations (soft modes) and phase fluctuations (Goldstone mode). Unusual progress observed in the last half-century has occurred due to use of some additional interacting fragments and structural details. Liquid crystalline polymers and metalomesogens present rapidly growing branches of knowledge of liquid crystal. Ferromagnetism and superconductivity of liquid crystals still pose a challenge. In this monograph we present different aspects of dielectric properties of mesogens. Chapter 1 presented by Otowski is dedicated to general problems of the molecular dipole s motion in electric field. Based on the broadband dielectric studies results of a few liquid-crystalline substances, their dielectric behavior is discussed by means of Nordio-Rigatti-Segre theory. The pretransitional anomalies observed in isotropic phase close to the phase transitions by means of dielectric measurements are described by Drozd-Rzoska, Rzoska and Janik in Chapter 2. An extended part of this book is devoted to chiral liquid crystals, the importance of which for applications and expectations for them are continuously increasing. The principles of the dielectric behavior of chiral liquid-crystalline compounds based on general considerations applying for other dipolar systems as well is presented by Hoffmann in Chapter 3. In general considerations based on the example of 12 selected substances showing extremely rich polymorphism Marzec, Mikulko, Wróbel and Haase analyze impressive behaviors of collective modes (Chapter 4). The problem of non-linear dielectric effects constitutes an important part of this book. A general introduction to the non-linear dielectric spectroscopy is contained in Chapter 5 elaborated by Kedziora, who concentrates himself on the isotropic phase, solutions and precritical phenomena. The problem of molecular properties of smectic materials and relaxation in ferroelectric liquid crystals with particular attention paid to electrooptic phenomena are discussed by Kuczynski in Chapter 6. Advantages of electrooptic methods applied to chiral tilted smectic liquid crystals with either ferroelectric or antiferroelectric dipole order are known. However, less popular problem of so called organic glass formers presented by Massalska-Arodz, Sciesinska, Sciesinski, Krawczyk, Inoba and Zielinski in Chapter 7 deserved attentions. Properties of these materials are discussed by using the results of complementary methods such as INS, QENS, adiabatic calorimetry and far-infrared spectra. Chapter 8, presented by Rózanski, is devoted to the dielectric properties of liquid crystals confined in porous matrices or dispersed throughout solid matrices. Such systems seem to be fascinating not only from the point of view of surface interactions but also due to attractive properties of dispersed systems in nanoscale. Of great value is also Chapter 9 by Kocot, Merkel, Sufin, Vij and Mehl describing dendrimeric liquid crystals built of molecules containing siloxane or carbosilazane cores. The problems of dynamics and ordering are discussed in terms of IR and dielectric spectroscopy results. Chapter 10, written by Urban, is committed to the relaxation processes in calamitic liquid crystals with emphasis on pressure and temperature effects. Finally let us direct readers attention to general references relating to the new liquid crystalline compounds [49] and IUPAC classification of these systems [50]. 1. Boettcher C. J. F., van Belle O.C., Bordewijk P. and Rip A., 1973, Theory of Electric Polarization, Vol.I: Dielectrics in Static Fields, 2nd revised edition, Elsevier Science Ltd, Amsterdam. 2. Boettcher C.J.F. and Bordewijk, 1978, Theory of Electric Polarization, Vol.II. Dielectrics in Time-dependent Fields, 2nd revised edition, Elsevier Science Ltd, Amsterdam. 3. Hill N., Vaughan W.E., Price A.H. and Davies M., 1969, Dielectric Properties and Molecular Behaviour, van Nostrand, London. 4. Froehlich H., 1958, Theory of Dielectrics, Oxford University Press, London. 5. von Hippel A.R., 1995, Dielectric Materials and Applications, Artech House Publishers. 6. Davies M., 1965, Some Electrical and Optical Aspects of Molecular Behaviour, Pergamon Press, Oxford. 7. Scaife B.K.P., 1998, Principle of Dielectrics, Revised edition, Oxford University Press, Clarendon, Oxford. 8. Riande E. and Diaz-Calleja R., 2004, Electrical Properties of Polymers, Marcel Dekker, NY. 9. Jonscher A.K., 1996, Universal Relaxation Law, Chelsea Dielectric Press Ltd, London. 10. Grigas J., 1996, Microwave Dielectric Spectroscopy of Ferroelectrics and Related Materials, Series: Ferroelectricity and Related Phenomena, Volume 9, Gordon and Breach Science Publishers, Philadelphia. 11. Runt J.P. and Fitzgerald J.J.(Eds.), 1997, Dielectric Spectroscopy of Polymeric Materials, American Chemical Society, Washington, DC. 12. Havriliak S. and Havriliak S.J., 1996, Dielectric and Mechanical Relaxation in Materials, Hanser Verlag, München. 13. Gaiduk V.I. and McConnel J.R., 1999, Dielectric Relaxation and Dynamics of Polar Molecules, World Scientific Pub. Co.Inc., Singapore. 14. Kremer F. and Schönhals A. (Eds) 2002, Broadband Dielectric Spectroscopy, Springer, NY. 15. Demus D., Goodby J., Gray G.W., Spiess H.W. and Vill V. (Eds.), 1998, Handbook of Liquid Crystals, 4-Volume Set, Wiley-VCH, Veinheim. 16. Demus D., Goodby J., Gray G.W., Spiess H.W. and Vill V (Eds.), 1999, Physical Properties of Liquid Crystals, Wiley-VCH, Veinheim. 17. Stegemeyer H. (Ed.), 1994, Liquid Crystals, Steinkopff, Darmstadt and Springer, NY. 18. Buka A. (Ed.), 1993, Modern Topics in Liquid Crystals. From Neutron Scattering to Ferroelectricity, World Scientific, Singapore. 19. Dierking I., 2003. Texture of Liquid Crystals, Wiley-VCH, Weinheim. 20. Luckhurst G.R. and Gray G.W. (Eds.), 1979, The Molecular Physics of Liquid Crystals, Academic Press, London. 21. de Gennes P.G. and Prost J., 1993, The Physics of Liquid Crystals, 2nd edition, Clarendon Press, Oxford. 22. Gray G.W. and Goodby J.W., 1984, Smectic Liquid Crystals. Textures and Structures, Leonard Hill, Glasgow. 23. Martellucci S. and Chester A.N. (Eds.), 1992, Phase Transitions in Liquid Crystals, NATO ASI Series, Vol.B290, Plenum Press, NY. 24. Luckhurst G.R. and Veracini C.A. (Eds.), 1994. The Molecular Dynamics of Liquid Crystals, NATO ASI Series, Vol.C431, Kluwer, Dordrecht. 25. Priestley E.B., Wojtowicz P.J. and Sheng P. (Eds.), 1975, Introduction to Liquid Crystals, Plenum Press, NY. 26. Lagerwall S.T., 1999, Ferroelectric and Antiferroelectric Liquid Crystals, Wiley-VCH, Weinheim. 27. Baus M., Rull L.F. and Ryckaert J.P. (Eds.), 1995, Observation, Prediction and Simulation of Phase Traansitions in Complex Fluids, Kluwer, Dordrecht. 28. Anisimov M.A., 1991, Critical Phenomena in Liquids and Liquid Crystals, Gordon & Breach, Philadelphia 29. Vertogen G. and de Jeu W.H., 1986, Thermotropic Liquid Crystals, Fundamentals, Springer, Berlin 30. de Jeu W.H., 1980, Physical Properties of Liquid Crystalline Materials, Gordon & Breach, NY 31. Helfrich W. and Heppke G., (Eds.), 1980, Liquid Crystals of One and Two Dimensional Order, Springer, Berlin. 32. Goodby J.W., Blinc R., Clark N.A., Lagerwall S.T., Osipov M.A., Pikin S.A., Sakurai T., Yoshino K. and }eka B., 1991, Ferroelectric Liquid Crystals. Principles, Properties and Applications, Series: Ferroelectricity and Related Phenomena, Volume 7. Gordon and Breach, Philadelphia. 33. Pikin S.A., 1991, Structural Transformations in Liquid Crystals, Gordon and Breach, NY. 34. Haberlandt R., Michel D., Poppel A. and Stannarius R., 2005, Molecules in interaction with surfaces and interfaces, Springer NY. 35. Crawford G.P. and }umer S., (Eds), Liquid Crystals in Complex Geometries, 1996, Taylor & Francis, London. 36. Muaevic I., Blinc R. and }eka B., 2000, The Physics of Ferroelectric and Antiferroelectric Liquid Crystals, World Scientific, Singapore. 37. Haase W. and Wróbel S. (Eds.), 2003, Relaxation Phenomena. Liquid Crystals, Magnetic Systems, Polymers, High-TC Superconductors, Metallic Glasses., Springer, NY. 38. Kresse H., 1983, in: Advances in Liquid Crystals, Vol.6, Brown G.H. (ed.), Academic Press, NY. 39. Coffey W.T. and Kalmykov Y.P. 2000, Adv.Chem.Phys. 111, 487. 40. de Jeu W.H., 1978, in: Solid State Physics, Supplement 14. Liebert L. (ed.), Academic Press. 41. Rzoska S.J. and Zhelezny V.P., (Eds), 2004, Nonlinear Dielectric Phenomena in Complex Liquids, Kluwer, Dordrecht. 42. Urban S. and Wuerflinger A., 1979, Adv.Chem.Phys., 98, 143. 43. Kresse H., 1982, Fortschrifte der Physik, 80, 507. 44. Urban S., 2001, in: Physical Properties of Liquid Crystals: Nematics, Dunmur D., Fukuda A. and Luckhurst G. (Eds.), Inspec, London, p.267. 45. Blinov L.M. and Chigrinov V.G., 1994, Electrooptic Effects in Liquid Crystal Materials, Springer, NY. 46. Meier G. and Saupe A., 1966, in: Liquid Crystals, Brown G.H., Dines G.J. and Labes M.M. (Eds.), Gordon and Breach, Philadelphia. 47. Kresse H., 1998, in: Handbook of Liquid Crystals, Demus D., Goodby J., Gray G.W., Spiess H.W. and Vill V. (Eds.), Vol.2, Wiley-VCH, Veinheim. 48. Dunmur D and Toriyama K., 1998, in: Handbook of Liquid Crystals, Demus D., Goodby J., Gray G.W., Spiess H.W. and Vill V. (Eds.), Vol. 1, Wiley-VCH, Veinheim. 49. Vill V., 2006, LiqCryst 4.6. Data Base, Fujitsu. 50. Byron M. et al. 2001, Pure Appl.Chem., 73, 845.

The Physics And Chemistry Of Liquid Crystal Devices

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Author : Gerald J. Sprokel
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-11

The Physics And Chemistry Of Liquid Crystal Devices written by Gerald J. Sprokel and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Technology & Engineering categories.

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.

Ferroelectric And Antiferroelectric Liquid Crystals

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Author : Sven T. Lagerwall
language : en
Publisher: Wiley-VCH
Release Date : 1999-12-21

Ferroelectric And Antiferroelectric Liquid Crystals written by Sven T. Lagerwall and has been published by Wiley-VCH this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-12-21 with Science categories.

Sven T. Lagerwall Ferroelectric and Antiferroelectric Liquid Crystals The study of ferroelectricity is a branch of solid state physics which has shown rapid growth during the recent years. Ferroelectric materials exhibit unusual electric properties which make them useful in modern (opto)electronic technology, esp. display technology. Ferroelectric and antiferroelectric liquid crystals, including also various polymer forms, are the hottest research topic today in liquid crystals. The field is at the very beginning of industrial exploitation - a sensitive phase in which a good reference work is needed and will have a broad spectrum of readers both at universities and in industry.