Download or read book Lyotropic Liquid Crystals and the Structure of Biomembranes written by Stig Friberg and published by . This book was released on 1976 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Magnetic Resonance Studies in Lyotropic Liquid Crystals written by CL Khetrapal and published by Springer Science & Business Media. This book was released on 2013-03-13 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. Lyotropic Liquid Crystals The class of compounds known as thermotropic liquid crystals has been widely utilized in basic research and industry during recent years. The properties of these materials are such that on heating from the solid to the isotropic liquid state, phase transitions occur with the formation of one or more intermediate anisotropic liquids. The unique and sometimes startling properties of these liquid crystals are the properties of pure compounds. However, there exists a second class of substances known as lyotropic liquid crystals which obtain their anisotropic properties from the mixing of two or more components. One of the components is amphiphilic, containing a polar head group (generally ionic or zwitterionic) attached to one or more long-chain hydrocarbons; the second component is usually water. Lyotropic liquid crystals occur abundantly in nature, particularly in all living systems. As a consequence, a bright future seems assured for studies on such systems. Even now, many of the properties of these systems are poorly understood. It is the purpose of this review to consolidate the results obtained from nuclear magnetic resonance studies of such systems and to provide a coherent picture of the field. Probably the most familiar example of a lyotropic liquid crystal is soap in water. A common soap is sodium dodecylsulphate where an ionic group (sulphate) is attached to a hydrocarbon chain containing twelve carbons.
Download or read book Geometric Methods In Elastic Theory Of Membranes In Liquid Crystal Phases Second Edition written by Zhanchun Tu and published by World Scientific. This book was released on 2017-11-29 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'The book is highly recommended as a reference for advanced graduate students and scholars involved in geometric analysis of membranes and other elastic surfaces. Valuable techniques may be learned from the book’s model constructions and sequential derivations and presentations of governing equations. Detailed analysis and solutions enable the reader with an increased understanding of the physical characteristics of membranes in liquid crystal phases such as their preferred shapes.'Contemporary PhysicsThis is the second edition of the book Geometric Methods in Elastic Theory of Membranes in Liquid Crystal Phases published by World Scientific in 1999. This book gives a comprehensive treatment of the conditions of mechanical equilibrium and the deformation of membranes as a surface problem in differential geometry. It is aimed at readers engaging in the field of investigation of the shape formation of membranes in liquid crystalline state with differential geometry. The material chosen in this book is mainly limited to analytical results. The main changes in this second edition are: we add a chapter (Chapter 4) to explain how to calculate variational problems on a surface with a free edge by using a new mathematical tool — moving frame method and exterior differential forms — and how to derive the shape equation and boundary conditions for open lipid membranes through this new method. In addition, we include the recent concise work on chiral lipid membranes as a section in Chapter 5, and in Chapter 6 we mention some topics that we have not fully investigated but are also important to geometric theory of membrane elasticity.
Download or read book The Lyotropic State of Matter written by Alexander G Petrov and published by CRC Press. This book was released on 1999-04-08 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lyotropic state of matter embraces highly concentrated solutions of soaps and detergents, as well as such biologically active substances as lipids, proteins, nucleic acids and lipopolysaccharides. Since some of the most important living lyotropic structures are biological membranes, their study is multidisciplinary, ranging from the molecular physics and physical chemistry of interfaces to living matter physics in general, and membrane biophysics in particular. Written for liquid crystal scientists who are not familiar with lyotropics and membranes, for membranologists who are not familiar with liquid crystal physics, and for experts in these fields, The Lyotropic State of Matter: Molecular Physics and Living Matter Physics presents both theory and experiment, and provides an overview of the state of the art in this exciting area of study.
Download or read book written by Douglas H. Everett and published by Royal Society of Chemistry. This book was released on 1979-01-01 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the growing volume of published work in this field, researchers will find this book an invaluable source of information on current methods and applications.
Download or read book Liquid Crystals and Biological Structures written by Glenn Brown and published by Elsevier. This book was released on 2012-12-02 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid Crystals & Biological Structures covers analogies between biological structures and behavior of living cells to liquid crystalline structures and their behavior. It emphasizes that the physical state of the matter involved in life processes is to a great extent liquid crystalline. The first chapters discuss the physical, chemical, structural, and optical properties of liquid crystals, as well as the structure of the principal molecules associated with life systems. The core chapters cover selected cellular structures exhibiting liquid crystalline behavior to emphasize the nature of various cellular membranes, from the cell membranes to the receptors and effectors. The book also considers differentiated organelles of the cell that are specialized for photoreception, including chloroplasts for photosynthesis, the retinal photoreceptors of the eye, and the rods and cones for visual excitation. This book is suited for students and bioscientists who are interested in the potential of the liquid crystalline state in exploring a variety of biological phenomena.
Download or read book Liquid Crystals written by Shri Singh and published by World Scientific. This book was released on 2002 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid crystals are partially ordered systems without a rigid, long-range structure. The study of these materials covers a wide area: chemical structure, physical properties and technical applications. Due to their dual nature -- anisotropic physical properties of solids and rheological behavior of liquids -- and easy response to externally applied electric, magnetic, optical and surface fields liquid crystals are of greatest potential for scientific and technological applications. The subject has come of age and has achieved the status of being a very exciting interdisciplinary field of scientific and industrial research. This book is an outgrowth of the enormous advances made during the last three decades in both our understanding of liquid crystals and our ability to use them in applications. It presents a systematic, self-contained and up-to-date overview of the structure and properties of liquid crystals. It will be of great value to graduates and research workers in condensed matter physics, chemical physics, biology, materials science, chemical and electrical engineering, and technology from a materials science and physics viewpoint of liquid crystals.
Download or read book Advances in Liquid Crystals written by Glenn H. Brown and published by Academic Press. This book was released on 2013-10-22 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Liquid Crystals, Volume 6 is a collection of scientific essays that focuses on the developments and applications in the field of liquid crystal science. The text begins with an article about the smectic phases of substances with rodlike molecules in layered structures. This article focuses on the nematic phases of polymorphism that include cubic thermotropic phases and blue phases. A section of the book provides an extensive discussion of the means of experimental procedures used to evaluate the spectra and the implications of the spectral parameters. A critical analysis of the influence of molecular vibration including interdependence on the average order parameters is also included. The terms nuclear relaxation, quadrupole coupling constants, chemical shielding anisotropy, molecular order, and molecular structure and conformation are explained in detail. The last article briefly discusses the actions of liquid crystal systems in the muscle and connective tissue. The book will provide valuable insights for scientists, developers of crystal displays, students, and researchers in the field of chemistry.
Download or read book Advances in Biomembranes and Lipid Self Assembly written by and published by Academic Press. This book was released on 2016-04-01 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Elsevier book series Advances in Biomembranes and Lipid Self-Assembly (previously titled Advances in Planar Lipid Bilayers and Liposomes), provides a global platform for a broad community of experimental and theoretical researchers studying cell membranes, lipid model membranes, and lipid self-assemblies from the micro- to the nanoscale. Planar lipid bilayers are widely studied due to their ubiquity in nature and find their application in the formulation of biomimetic model membranes and in the design of artificial dispersion of liposomes. Moreover, lipids self-assemble into a wide range of other structures including micelles and the liquid crystalline hexagonal and cubic phases. Consensus has been reached that curved membrane phases do play an important role in nature as well, especially in dynamic processes such as vesicles fusion and cell communication. Self-assembled lipid structures have enormous potential as dynamic materials ranging from artificial lipid membranes to cell membranes, from biosensing to controlled drug delivery, from pharmaceutical formulations to novel food products to mention a few. An assortment of chapters in this volume represents both original research as well as comprehensive reviews written by world leading experts and young researchers. - Surveys recent theoretical and experimental results on lipid micro- and nanostructures - Presents potential uses of applications like clinically relevant diagnostic and therapeutic procedures, biotechnology, pharmaceutical engineering, and food products - Provides both original research as well as comprehensive reviews written by world leading experts and young researchers - Provides a global platform for a broad community of experimental and theoretical researchers studying cell membranes, lipid model membranes, and lipid self-assemblies from the micro- to the nanoscale.
Download or read book Introduction to Liquid Crystals written by E. Priestly and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: The existence of liquid crystals has been known for nearly a centu ry; yet it is only in the last ten years that their unique optical, electri cal, electro-optic, and thermal properties have been exploited to any significant extent in such technological applications as digital d~ plays and thermography. Digital watches equipped with liquid-crys tal displays (LCD's) have recently made their debut in the electronic watch market, and the large-scale use of LCD's in a variety of other applications requiring reliable, low-power digital displays is immi nent. There is good reason to believe that liquid crystals will be the first electro-optic materials to find widespread commercial use. Apart from applications, liquid crystals are unique among the phases of matter. Lurking beneath their garish display of color and texture is a great complexity of physical and chemical interaction that is only now beginning to unfold in the face of a decade-old resurgence in all aspects of liquid~rystal research. RCA Laboratories has participated in this resurgence from its beginning in the early 1960's and at present maintains active liquid-crystal programs both in basic re search and in device engineering. In view of the widespread interest in liquid crystals at RCA Labo ratories, an in-house weekly seminar devoted to the subject of liquid crystals was organized in the fall of 1973. The resulting lectures were subsequently published in three issues of the RCA Review and, with the incorporation of much additional material, eventually grew into the present volume.
Download or read book Liquid Crystals written by Birendra Bahadur and published by World Scientific. This book was released on 1991 with total page 456 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. Classification, theory, chemical structure, physical properties and surface alignment of liquid crystals have detailed chapters to facilitate the basic understanding of the science behind LCDs and other uses of liquid crystals. The chapters, 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 Advances in Chromatography written by J. Calvin Giddings and published by CRC Press. This book was released on 1979-12-01 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physical Chemistry of MEMBRANES written by B. Silver and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ls book is an account of what physical chemistry h . . to say about the structural, electrical and transport properties of biological membranes and their simplest model-the lipid bilayer. The accent throughout is on basic ideas. In contrast to the essentially descriptive ap proach characteristic of texts on membrane biochemistry, our underlying themes are the role of force and entropy in maintaining membrane organization, in determining the electric fields and ionic environment of membranes, and in regulating the passage of molecules and ions across membranes. Although experimental findings will always be the touch stone against which theory will be tried, no attempt is made to present an exhaustive survey of experimental data. On the other hand, there is discussion of the nature and limitations of the results obtainable by the major laboratory techniques. The treatment is at the level of an advanced undergraduate course or an introductory survey suitable for post graduate students carrying out research in biochemistry, biophysics, or physiology. The mathematical demands on the reader are trivial. The few forbidding equations appearing in Chapter 7 are soon whittled away to simple practical expressions. Although the current-voltage characteristics of nerves are traditionally the province of biophysics rather than physical chemistry, certain aspects relevant to the electrical activity of nerves are nevertheless included in this text, namely, mem brane and diffusion potentials and conductivity fluctuations. Where rival theories exist, conflicting convictions have been presented, but not necessarily accorded equal approbation. The author has a viewpoint.
Download or read book The Lyotropic State of Matter written by Alexander G Petrov and published by CRC Press. This book was released on 1999-04-08 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lyotropic state of matter embraces highly concentrated solutions of soaps and detergents, as well as such biologically active substances as lipids, proteins, nucleic acids and lipopolysaccharides. Since some of the most important living lyotropic structures are biological membranes, their study is multidisciplinary, ranging from the molecular physics and physical chemistry of interfaces to living matter physics in general, and membrane biophysics in particular. Written for liquid crystal scientists who are not familiar with lyotropics and membranes, for membranologists who are not familiar with liquid crystal physics, and for experts in these fields, The Lyotropic State of Matter: Molecular Physics and Living Matter Physics presents both theory and experiment, and provides an overview of the state of the art in this exciting area of study.
Download or read book Handbook of Encapsulation and Controlled Release written by Munmaya Mishra and published by CRC Press. This book was released on 2015-12-01 with total page 1516 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of encapsulation, especially microencapsulation, is a rapidly growing area of research and product development. The Handbook of Encapsulation and Controlled Release covers the entire field, presenting the fundamental processes involved and exploring how to use those processes for different applications in industry. Written at a level comp
Download or read book Handbook of Liquid Crystals written by Hans Kelker and published by Wiley-VCH. This book was released on 1980 with total page 1186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technological Innovations in Sensing and Detection of Chemical Biological Radiological Nuclear Threats and Ecological Terrorism written by Ashok Vaseashta and published by Springer Science & Business Media. This book was released on 2012-01-03 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book arises from the NATO Advanced Study Institute “Technological Innovations in Detection and Sensing of CBRN Agents and Ecological Terrorism” held in Chisinau, Republic of Moldova in June 2010. It comprises a variety of invited contributions by highly experienced educators, scientists, and industrialists, and is structured to cover important aspects of the field that include developments in chemical-biological, and radiation sensing, synthesis and processing of sensors, and applications of sensors in detecting/monitoring contaminants introduced/dispersed inadvertently or intentionally in air, water, and food supplies. The book emphasizes nanomaterials and nanotechnology based sensing and also includes a section on sensing and detection technologies that can be applied to information security. Finally, it examines regional, national, and international policies and ethics related to nanomaterials and sensing. It will be of considerable interest and value to those already pursuing or considering careers in the field of nanostructured materials and nanotechnology based sensing, In general, it serves as a valuable source of information for those interested in how nanomaterials and nanotechnologies are advancing the field of sensing, detection, and remediation, policy makers, and commanders in the field.
