Soft Matter Physics: An Introduction (Partially Ordered Systems)

Many materials have complex structural and dynamic properties intermediate between those of crystals and fluids. Among these are liquid crystals, with their well-known orientational order; colloids; polymer solutions and melts; foams; and gels; collectively these have come to be called "soft matter." These materials generally consist of organic molecules that interact weakly; as a result, thermal fluctuations, external fields, and boundary effects strongly influence their structure and properties. This sensitivity raises interesting new problems in basic physics, chemistry, and materials science; offers a path of thinking about some processes in biological systems; and opens numerous possibilities for technological applications. This textbook for graduate students in physics or chemical physics begins with a discussion of chemical bonds, interactions between particles, and the resulting molecular arrangements. The concept of order parameter leads to a discussion of phase transitions, elasticity and dynamics, followed by a review of fractals and growth phenomena. A significant portion of the book deals with defects of topological nature that accompany various types of order. The book concludes with chapters on surface phenomena, stability of colloidal systems, and structural properties of polymers. The detailed exposition, the emphasis on physical principles, and the exercises at the end of each chapter will make this book a valuable introduction for graduate students and researchers to this rapidly growing field. cover-m 1 cover 1 Page_i 2 Page_ii 3 Page_iii 4 Page_iv 5 Page_v 6 Page_vi 7 Page_vii 8 Page_viii 9 Page_ix 10 Page_x 11 Page_xi 12 Page_xii 13 Page_xiii 14 Page_xiv 15 Page_xv 16 Page_xvi 17 Page_xvii 18 Page_xviii 19 Page_xix 20 Page_xx 21 Page_xxi 22 Page_xxii 23 Page_xxiii 24 Page_xxiv 25 Page_xxv 26 Page_xxvi 27 page_00000001 28 page_00000001 28 page_00000002 29 page_00000003 30 page_00000004 31 page_00000005 32 page_00000006 33 page_00000007 34 page_00000008 35 page_00000009 36 page_00000010 37 page_00000011 38 page_00000012 39 page_00000013 40 page_00000014 41 page_00000015 42 page_00000016 43 page_00000017 44 page_00000018 45 page_00000019 46 page_00000020 47 page_00000021 48 page_00000022 49 page_00000023 50 page_00000024 51 page_00000025 52 page_00000026 53 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page_00000635 662 page_00000636 663 page_00000637 664 Traditionally, the materials studied by physicists have uniform properties and can readily be classified as solids, liquids, or gases. However, many materials of great interest for technology, chemistry, or biology, have complex structures and properties that vary from point to point and time to time. Among these are such materials as liquid crystals, polymer solutions or melts, colloids, foams, and gels, which have come collectively to be called "soft matter." They generally consist of organic molecules that interact weakly, so that individual phases are stable only over small temperature ranges. This text, intended for students with some knowledge of quantum mechanics, discusses the physics of these materials. It begins with discussions of the chemical bond and the interactions that bind molecules into condensed matter, of the ordering (crystalline or otherwise) one finds in condensed matter, noting that for soft matter the order is intermediate between that of crystals and that of typical disordered fluids. The discussion then turns to phase transitions, elasticity, and dynamics, using liquid crystals as the focus. A discussion of growth phenomena and fractals introduces a detailed treatment of dislocations and defects that clarifies many concepts by using insights only recently developed from the study of liquid crystals. The book concludes with discussions of surface phenomena, the stability of colloidal systems, and structural properties of polymers. The detailed exposition, the emphasis on physical principles, and the exercises at the ends of each chapter will make this a valuable introduction to this rapidly growing area of research

Many materials have complex structural and dynamic properties intermediate between those of crystals and fluids. Among these are liquid crystals, with their well-known orientational order; colloids; polymer solutions and melts; foams; and gels; collectively these have come to be called soft matter. These materials generally consist of organic molecules that interact weakly; as a result, thermal fluctuations, external fields, and boundary effects strongly influence their structure and properties. This sensitivity raises interesting new problems in basic physics, chemistry, and materials science; offers a path of thinking about some processes in biological systems; and opens numerous possibilities for technological applications.

This textbook for graduate students in physics or chemical physics begins with a discussion of chemical bonds, interactions between particles, and the resulting molecular arrangements. The concept of order parameter leads to a discussion of phase transitions, elasticity and dynamics, followed by a review of fractals and growth phenomena. A significant portion of the book deals with defects of topological nature that accompany various types of order. The book concludes with chapters on surface phenomena, stability of colloidal systems, and structural properties of polymers. The detailed exposition, the emphasis on physical principles, and the exercises at the end of each chapter will make this book a valuable introduction for graduate students and researchers to this rapidly growing field.

Introductions to solid state physics have, ever since the initial book by F. Seitz in 1940, concentrated on simple crystals, with few atoms per cell, bonded together by strong ionic, covalent, or metallic bonds. References to weaker bonds, such as van der Waals forces in rare gases, or to geometric or chemical disorder (e.g., alloys or glasses) have been limited. The physical understanding of this ?eld started well before Seitz’s book and led to a number of Nobel prizes after the last war. Applications cover classical metallurgy, el- tronics, geology and building materials, as well as electrical and ionic transport, chemical reactivity, ferroelectricity and magnetism. But in parallel with this general and well publicized trend, and sometimes earlier as far as physical concepts were concerned, an exploration and increasingly systematic study of softer matter has developed through the twentieth century. More often in the hands of physical chemists and crystallographers than those of pure physicists, the ?eld had for a long time a reputation of complexity. If progress in polymers was steady but slow, interest in liquid crystals had lain dormant for forty years, after a bright start lasting through 1925, to be revived in the late 1960s based on their possible use in imaging techniques. The optoelectronic properties of the ?eld in general are even more recent. "This textbook for graduate students in physics or chemical physics begins with a discussion of chemical bonds, interactions between particles, and the resulting molecular arrangements. The concept of order parameter leads to a discussion of phase transitions, elasticity, and dynamics, followed by a review of fractals and growth phenomena. A significant portion of the book deals with defects of topological nature that accompany various types of order. The book concludes with chapters on surface phenomena, stability of colloidal systems, and structural properties of polymers. The detailed exposition, the emphasis on physical principles, and the exercises at the end of each chapter will make this book a valuable introduction for graduate students and researchers to this rapidly growing field."--BOOK JACKET. The study of "soft matter" materials with complex properties has raised a number of interesting problems in basic physics, biology, and materials science, all of which promise new and important technological applications. After a review of chemical bonds and phase transitions, the authors treat topics such as surface phenomena, stability of colloidal systems, structural properties of polymers, and topological defects. The monograph's emphasis on underlying physical principles offers a coherent treatment of the great variety of research in the field.