This volume addresses the question of what it is like to be depressed. Despite the vast amount of research that has been conducted into the causes and treatment of depression, the experience of depression remains poorly understood. Indeed, many depression memoirs state that the experience is impossible for others to understand. However, it is at least clear that changes in emotion, mood, and bodily feeling are central to all forms of depression, and these are the book's principal focus. In recent years, there has been a great deal of valuable philosophical and interdisciplinary research on the emotions, complemented by new developments in philosophy of psychiatry and scientifically-informed phenomenology. The book draws on all these areas, in order to offer a range of novel insights into the nature of depression experiences. To do so, it brings together a distinguished group of philosophers, psychiatrists, anthropologists, clinical psychologists and neuroscientists, all of whom have made important contributions to current research on emotion and/or psychiatric illness.
Written by well-respected experts, this how-to guide provides patterns for the design of human computer human interaction (HCHI). An increasing number of applications are currently designed for use by more than one user, eg: multi-player games, interactive web sites, mobile phones, collaborative learning systems, interactive workspaces and smart environments. In these areas there is a shift from (HCI) human computer interaction to (HCHI) human computer human interaction. The role of patterns in this movement is twofold: 1st – patterns focus on the human user of the system; 2nd – patterns assist developers in the development process of groupware applications.
This book is a stop-gap contribution to the science and technology of carbon plasmas and carbon vapors. It strives to cover two strongly related fields: the molecular quantum theory of carbon plasmas and carbon nanostructures; and the molecular and atomic spectroscopy of such plasmas and vapors. These two fields of research are strongly intertwined and thus reinforce one another.Even though the use of carbon nanostructures is increasing by the day and their practical uses are emerging, there is no modern review on carbon plasmas, especially from molecular theoretical and spectroscopic viewpoints. The importance of the present book is therefore great from both educational and practical aspects. This review might be the first step towards bringing such textbooks into existence for university education. Similarly, for applied and engineering works in carbon nanostructures, the book provides a theoretical salient point for technologists in the field.
For more than 60 years, Merritt’s Neurology has remained a trusted landmark text in clinical neurology, providing unparalleled guidance on neurologic protocols, treatment guidelines, clinical pathways, therapeutic recommendations, and imaging. The fourteenth edition reflects the state of today’s practice, with fully updated content and timely new sections and chapters. With this edition, Dr. James Noble joins Drs. Elan Louis and Stephan A. Mayer as co-editor, all of whom trained at Columbia University where Dr. H. Houston Merritt wrote the initial editions of this book. Lauded for its comprehensive coverage, colorful and dynamic visual style, readability, and ease of use, this up-to-date reference is ideal for neurologists, primary care physicians, and residents alike.
Alongside other factors, cultural values and identities help to explain different regulatory frameworks for genetically modified organisms. This book uses insights from environmental history and sociology to illuminate the cultural politics of regulation in the US and the EU, with particular attention to public opinion and anti-GMO activism.
This book takes the reader from basic questions like “What is health?” and “What is a psychiatric disorder?”, into the midst of people’s present mental health and enhancement choices. More and more people receive psychiatric diagnoses and the use of psychopharmacological drugs keeps increasing. Concurrently, media report the popularity of “brain doping” or “study drugs” on campuses as well as at the workplace. This open access book tests the hypothesis of whether mental health and enhancement can be seen as two sides of the same coin: that the demands on cognitive and emotional functioning have been increasing and psychoactive substances are used to meet these demands. Whether the increasing number of diagnoses means that really more people are suffering from psychological problems will be discussed just as whether the media accurately describe “brain doping” as a new and rising trend. An individual section describes non-pharmacological alternatives to maintain and increase one’s mental well-being. To answer these and many more questions, the author critically reviews evidence from epidemiology, psychiatry, and psychology. That people with and without psychiatric diagnoses are often using the same substances – for example, the stimulant drugs Adderall or Ritalin – to cope with their problems is presented as evidence to look beyond the traditional distinction between disorder, health, and enhancement. Likewise, different meanings of “drug” in historical and present contexts illustrate that the way we think of mental health and (il)legitimate drug use reflects our own culture. The book’s focus on addiction/substance use disorders makes it also relevant to the ongoing discussion of drug policy.
Graphene is one of the most intensively studied materials, and has unusual electrical, mechanical and thermal properties, which provide almost unlimited potential applications. This book provides an introduction to the electrical and transport properties of graphene and other two-dimensional nanomaterials, covering ab-initio to multiscale methods. Updated from the first edition, the authors have added chapters on other two-dimensional materials, spin-related phenomena, and an improved overview of Berry phase effects. Other topics include powerful order N electronic structure, transport calculations, and ac transport and multiscale transport methodologies. Chapters are complemented with concrete examples and case studies, questions and exercises, detailed appendices and computational codes. It is a valuable resource for graduate students and researchers working in physics, materials science or engineering who are interested in the field of graphene-based nanomaterials.
The quality and success of schools depend upon school leadership. Increasingly, in many countries worldwide, this belief has led to designing and implementing appropriate training and development programs for educational leaders. In an international comparative research project, current school leader training and development programs in fiftee
Presents modeling approaches that can be performed in SysML and other modeling languages This book combines the emerging discipline of systems architecting with model-based approaches using SysML. The early chapters of the book provide the fundamentals of systems architecting; discussing what systems architecting entails and how it benefits systems engineering. Model-based systems engineering is then defined, and its capabilities to develop complex systems on time and in a feasible quality are discussed. The remainder of the book covers important topics such as: architecture descriptions; architecture patterns; perspectives, viewpoints, views and their relation to system architecture; the roles of a system architect, their team, and stakeholders; systems architecting processes; agile approaches to systems architecting; variant modeling techniques; architecture frameworks; and architecture assessment. The book's organization allows experts to read the chapters out of sequence. Novices can read the chapters sequentially to gain a systematic introduction to system architecting. Model-Based System Architecture: Provides comprehensive coverage of the Functional Architecture for Systems (FAS) method created by the authors and based on common MBSE practices Covers architecture frameworks, including the System of Systems, Zachman Frameworks, TOGAF®, and more Includes a consistent example system, the “Virtual Museum Tour” system, that allows the authors to demonstrate the systems architecting concepts covered in the book Model-Based System Architecture is a comprehensive reference for system architects and systems engineers in technology companies. This book will also serve as a reference to students and researchers interested in functional architectures. Tim Weilkiens is the CEO at the German consultancy oose Innovative Informatik and co-author of the SysML specification. He has introduced model-based systems engineering to a variety of industry sectors. He is author of several books about modeling and the MBSE methodology SYSMOD. Jesko G. Lamm is a Senior Systems Engineer at Bernafon, a Swiss manufacturer for hearing instruments. With Tim Weilkiens, Jesko G. Lamm founded the Functional Architectures working group of the German chapter of INCOSE. Stephan Roth is a coach, consultant, and trainer for systems and software engineering at the German consultancy oose Innovative Informatik. He is a state-certified technical assistant for computer science from Physikalisch-Technische Lehranstalt (PTL) Wedel and a certified systems engineer (GfSE)®- Level C. Markus Walker works at Schindler Elevator in the research and development division as elevator system architect. He is an INCOSE Certified Systems Engineering Professional (CSEP) and is engaged in the committee of the Swiss chapter of INCOSE.
The aim of the book is to give an introduction to the method of QCD Spectral Sum Rules and to review its developments. After some general introductory remarks, Chiral Symmetry, the Historical Developments of the Sum Rules and the necessary materials for perturbative QCD including the MS regularization and renormalization schemes are discussed. The book also gives a critical review and some improvements of the wide uses of the QSSR in Hadron Physics and QSSR beyond the Standard Hadron Phenomenology. The author has participated actively in this field since 1978 just before the expanding success of the SVZ QSSR.
Based on FBI files released under the Freedom of Information and Privacy Acts, this riveting book reveals the disturbing details and surprising extent of U.S. government surveillance against German emigr writers, artists, and intellectuals who sought refuge in America after World War II. 26 illustrations.
This open access book discusses the contribution of sociology and survey research to climate research. The authors address the questions of which behaviors are of climate relevance, who is engaging in these behaviors, in which contexts do these behaviors occur, and which individual perceptions and values are related to them. Utilizing survey research, the book focuses on the measurement of climate-relevant behaviors with population surveys and develops an instrument that allows a valid estimate of an individual’s GHG emissions with a few core items. While the development of these instruments was based on surveys and qualitative interviews conducted in Austria, the instruments were subsequently tested in a set of 31 European countries, revealing the international relevance of such research. The book also concludes with a brief consideration of the effects of the COVID-19 crisis on environmental attitudes, situating the project globally.
A textbook for a one-semester course for students in chemistry, physics and nanotechnology, on the interaction of molecules with electric and magnetic fields as, for example, in light. The book provides the necessary background knowledge for simulating these interactions on computers with modern quantum chemical software.
This comprehensive new book introduces the core history of phenomenology and assesses its relevance to contemporary psychology, philosophy of mind, and cognitive science. From critiques of artificial intelligence research programs to ongoing work on embodiment and enactivism, the authors trace how phenomenology has produced a valuable framework for analyzing cognition and perception, whose impact on contemporary psychological and scientific research, and philosophical debates continues to grow. The first part of An Introduction to Phenomenology is an extended overview of the history and development of phenomenology, looking at its key thinkers, focusing particularly on Husserl, Heidegger and Merleau-Ponty, as well as its cultural and intellectual precursors. In the second half Chemero and Käufer turn their attention to the contemporary interpretations and uses of phenomenology in cognitive science, showing that phenomenology is a living source of inspiration in contemporary interdisciplinary studies of the mind. Käufer and Chemero have written a clear, jargon-free account of phenomenology, providing abundant examples and anecdotes to illustrate and to entertain. This book is an ideal introduction to phenomenology and cognitive science for the uninitiated, as well as for philosophy and psychology students keen to deepen their knowledge.
Take a fun and nostalgic look at the world of Volkswagen accessories. It is well documented that the Volkswagen Beetle is the best-selling vehicle of all time. In 1972, the 15-millionth Beetle was produced, breaking the record set by the Model T about 40 years earlier. It was a simple design with styling that appealed to the masses. It was affordable, practical, and fun. Because it was such a simple car and so many were sold, many people enjoy customizing their car with many accessories, which has been a large market for these cars dating back to the 1950s and 1960s. There is even a market today for people who collect these accessories without installing them. In Vintage Volkswagen Beetle Accessories, which is authored by veteran VW historian Stephan Szantai, a whole range of accessories are covered. Of course, a history of the Beetle is detailed, as well as the companies that formed the accessory aftermarket. Included are accessories for dressing up the exterior of the car, such as vented windows, bumpers and guards, turn-signal technology, add-on lighting, mirrors, etc. Then, interior accessories are examined, such as radios, ashtrays, gloveboxes, gauges, and clocks. No accessories book would be complete without engine accessories, covering both dress-up options and functional performance parts. Travel accessories, such as roof racks, coolers, extended gas tanks, tail racks, and coffee makers are detailed. Wheels are also covered. A gallery of accessorized Volkswagens of all types are featured, including Type 2 Buses; Type 3 squarebacks, fastbacks, and coupes; Karmen Ghias; and even single- and double-cab pickup bodystyles are included. Join the fun and nostalgic romp through VW accessory history with this new title that features everything cool about customizing your VW.
This book is a collection of expository articles based on four lecture series presented during the 2012 Notre Dame Summer School in Topology and Field Theories. The four topics covered in this volume are: Construction of a local conformal field theory associated to a compact Lie group, a level and a Frobenius object in the corresponding fusion category; Field theory interpretation of certain polynomial invariants associated to knots and links; Homotopy theoretic construction of far-reaching generalizations of the topological field theories that Dijkgraf and Witten associated to finite groups; and a discussion of the action of the orthogonal group on the full subcategory of an -category consisting of the fully dualizable objects. The expository style of the articles enables non-experts to understand the basic ideas of this wide range of important topics.
This book argues for the relevance, appropriateness, and usefulness of historical materialism to the musicological project. It interrogates the history of encounters between Marxism and music studies — both within and without the Soviet sphere — before staging the missed encounter between classical musicology and Second International Marxism. It concludes with a framework for understanding style history in terms of changes in the forces and relations of musical production.
A compendium of outrageous, hilarious or just plain shocking trivia about everything from history and politics to arts, religion, technology and much more. For years, the Chicago Tribune’s “10 Things You Might Not Know” column has been informing and entertaining readers on a diverse range of subjects. This volume collects the best of these columns, offering readers obscure, fascinating facts on universal topics that will appeal to everyone from sports fans to history buffs, foodies, and more. Expertly researched and thoroughly entertaining, 10 Things You Might Not Know About Nearly Everything contains a plethora of surprising trivia on numerous topics, with an especially close look into Chicago-area history and facts. For example, in Zion, Illinois it was once illegal to spit, eat oysters, wear tan-colored shoes, or whistle on Sundays. 10 Things You Might Not Know About Nearly Everything will leave readers brighter, wittier, and curious to learn more about myriad subjects and stories they will never forget.
Named “Man of the Millennium” in 1999, Johannes Gutenberg was the creator of one of the most influential and revolutionary inventions in Europe’s history: a printing press with mechanical movable type. This development sparked the printing revolution, which is regarded as the milestone of the second millennium and represents one of the central contributions in the turn to modernity. His printing press came to play a key role in the development of the Renaissance, the Reformation, and the Age of Enlightenment, providing the material foundation for the modern knowledge-based economy and the spread of learning to the masses. His invention revolutionized the way that information is shared and broadened the boundaries of who has access to written knowledge. Paving the way for bibliophiles of today, the Gutenberg Bible of 1454 remains one of the most famous books in history. Gutenberg’s technical innovations remained unrivalled for almost 350 years, until industrialization of the printing industry and the digital revolution built on the advances that he began, increasing the rate at which information is spread. Despite his significance in forming the world as we know it, there has not yet been a rigorous and accessible biography of Gutenberg published in English. Written by the leading expert on Gutenberg, Füssel’s biography brings together high academic standards and thorough historical details in a highly readable text that conveys everything you need to know about the man who changed printing forever.
Twelve-tone and serial music were dominant forms of composition following World War II and remained so at least through the mid-1970s. In 1961, Ann Phillips Basart published the pioneering bibliographic work in the field.
Neuroleptic malignant syndrome (NMS) and other hyperthermic conditions are rare complications of antipsychotic drugs that can cause discomfort, disability, and even death. As a result, every psychiatrist, physician, and mental health care professional needs to understand and identify these disorders in time to prevent a fatal outcome. Neuroleptic Malignant Syndrome and Related Conditions is an important tool for clinicians, outlining a framework for understanding, diagnosing, treating, and preventing these little-understood disorders. This new edition extensively updates and revises the first edition, integrating an explosion of findings that have occurred since the earlier edition was published in 1989. In addition to NMS, chapters focus on antipsychotic drug-related heatstroke, hyperthermia associated with other neuropsychiatric drugs, and malignant catatonia, as well as A new chapter on serotonin syndrome, the first comprehensive review to appear in the world literature. With the proliferation of serotonergic drugs such as Selective Serotonin Reuptake Inhibitors (SSRIs), the incidence of adverse reactions is on the rise, and this information will help practitioners spot early warning signals. Important information on thermoregulatory mechanisms to help clinicians understand the pathogenesis of hyperthermic conditions. With an understanding of the basic mechanisms underlying these conditions, practitioners will develop more effective strategies for recognition, diagnosis, and treatment. Written by four internationally renowned authorities on NMS, Neuroleptic Malignant Syndrome and Related Conditions is the most comprehensive resource on the subject in existence. With nearly 850 citations in the reference section, it is a must for researchers -- and for practitioners who need a practical approach based on the most current science.
Academics and practitioners argue that intangible values have become significant value drivers of today’s economy. Major production inputs no longer comprise of property, plant and equipment, but rather of brands, knowledge and other technological innovation. Based on this notion, information on such phenomena is supposedly crucial for existing and potential capital providers in making decisions whether to allocate resources to a company. This thesis examines the information use and needs of financial analysts with respect to intangible values. The purpose is to shed light on the usefulness of such information from the perspective of one of the primary user groups of IFRSs.
This textbook on urban ecosystems answers important questions about the ecological structure, functions and socio-ecological development of cities worldwide. Based on how cities are developing today in an increasingly urbanized world, it explains ecological challenges for cities of the 21st century such as resource efficiency, climate change, moderation of quality of life and resilience. The book combines theories of urban development and ecology with practical applications and case studies, thus identifying potential for improvement and examples of good ecological urban development worldwide. It shows that cities are by far not only problem areas but also offer great potential for a good life and that the various urban ecosystems can make a considerable contribution to this. The "eco-city" is thus not a utopia,but a real goal that can be pursued step by step in a targeted manner, taking into account the local and regional context. Four renowned urban ecologists have contributed their specific experience in sub-areas without losing sight of the big picture. Jürgen Breuste is an urban ecologist and works at the Paris Lodron University in Salzburg, Austria, on the topics of sustainable urban development, urban biodiversity, ecosystem services and eco-cities. Dagmar Haase is Landschaftsökologin and works at the Humboldt University of Berlin on urban ecosystem services and land use modeling. Stephan Pauleit is a landscape planner and works at the Technical University of Munich on strategies for the sustainable development of urban landscapes. Martin Sauerwein is a geographer and works at the University of Hildesheim on geo-ecology in cultural landscapes, geoarchaeology and soil protection. The textbook addresses a broad audience of students, teachersand also to practitioners in the fields of ecology, urban ecology, urban development, sustainability, urban geography, nature and landscape conservation, spatial planning, landscape ecology, social sciences and urban studies. The numerous photos and graphics, many of them in four colors, as well as clear tables illustrate the facts. Case studies, examples and explanations allow a deeper insight. Questions at the end of each chapter allow the progress of knowledge to be checked, and a comprehensive bibliography for each chapter provides further studies.This book is a translation of the original German 1st edition Stadtökosysteme by Jürgen Breuste published by Springer Fachmedien Wiesbaden GmbH, part of Springer Nature in 2016. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors. This springer essential is a translation of the original German 1st edition essentials,Stadtökosysteme by Jürgen Breuste published by Springer Fachmedien Wiesbaden GmbH, part of Springer Nature in 2016. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors.
Why does an entire society believe that there are witches who must be burned? What roles did the emerging 'state', the professions of clerics and jurists, and the public involved play in each case? And how could this project be completed? From a sociological point of view, the findings of recent international research on witches provide a model of a more general, highly ambivalent, 'pastoral' attitude, according to which a shepherd has to care for the welfare of his flock as well as for its erring sheep. The first main part describes the clerical initial situation, which developed the 'Dominican' demonological model of witchcraft on the basis of the still dominant magico-religious mentality in the 15th century. A model, according to the second part of the book, which then in the course of the 16th century in Western Europe increasingly fell into the hands of the not so innocent jurists. From there it developed into a legal witch persecution that realized the early European witch model from the village witch to the mass persecutions to the late child witches. The third part describes how witch persecutions slowly became less important towards the end of the 17th century as a general witchcraft 'politics' game in the transition from a confessional state to a (court) 'civil service' state.
This book gives readers the tools they need to achieve work design that is ergonomically effective while remaining economically feasible. Whether studying work design/ergonomics in a college classroom, preparing for the Board of Certification in Professional Ergonomics (BCPE) exam, or working as a professional in the field, readers can depend on this book to provide them with the information they need. Work Design is a single source for ergonomics, work design, and work measurement. Its engineering orientation equips readers with practical design information and procedures; its explicit organization, conversational style, and clear explanations make it easy to read and understand. The book's many charts and graphics dynamically illustrate important concepts and principles, and its extensive references give readers confidence in the material.
DIVAbsorbing, exceptionally detailed study examines early trends, posters, and book illustrations, stylistic influences in architecture; furniture, jewelry, and other applied arts; plus perceptive discussions of artists associated with the movement. /div
The Complete Idiot's Guide® to Learning German, Fourth Edition couches the more academic topics, such as verb tenses, in useful travel-themed chapters dealing with everything from shopping, renting cars, banking, making a phone call, visiting a doctor, going to the post office, to banking. This editon includes a new audio CD with nearly an hour of listen-and-learn exercises to get you speaking German like a native.
Prostate Cancer Metabolism: From Biochemistry to Therapeutics shows the peculiarities of prostate cancer metabolism, emphasizing the targetable aspects – that have not been considered in conventional treatment protocols. The book specifically addresses treatment of the castration-resistant stage of prostate cancer proposing many repurposed drugs and nutraceuticals to complement, not replace, standard therapies. The large body of evidence supporting these concepts makes them deserving of further research and well-designed clinical trials. It discusses lipid, cholesterol, glutamine, and glucose metabolisms and their impact on prostate cancer. Additionally, it explains how current established drugs can be repurposed to improve treatment outcomes. The concepts set out in the book, that deal with cancer at the cellular/molecular level, help identify new avenues of research and treatments to pursue that do not affect well-being whilst offer consistent benefits. Since most practicing physicians have not studied basic biochemistry since medical school, each chapter begins with a brief review of the topic to facilitate an understanding of the metabolically-oriented approach to targeting prostate cancer. Conventional treatments are not discussed here since they are covered in textbooks and specialized updates that abound in the medical literature. It is a valuable resource for cancer researchers, oncologists, clinicians and members of biomedical field who want to learn more about prostate cancer metabolism and how to apply recent findings in the field to bedside. - Explains the basic aspects of prostate cancer metabolism, including its biochemistry which has a pivotal role in clinical practice - Discusses new drugs and nutraceuticals with a metabolism-centered approach - Offers practical bedside approach in combination with molecular and biochemical fundamentals to help readers identify and provide the best treatment to their patients
It's 1973, and David Leveraux has landed his dream job as a Flavorist-in-Training, working in the secretive industry where chemists create the flavors for everything from the cherry in your can of soda to the butter on your popcorn. While testing a new artificial sweetener -- "Sweetness #9" -- he notices unusual side-effects in the laboratory rats and monkeys: anxiety, obesity, mutism, and a generalized dissatisfaction with life. David tries to blow the whistle, but he swallows it instead. Years later, Sweetness #9 is America's most popular sweetener -- and David's family is changing. His wife is gaining weight, his son has stopped using verbs, and his daughter suffers from a generalized dissatisfaction with life. Is Sweetness #9 to blame, along with David's failure to stop it? Or are these just symptoms of the American condition? David's search for an answer unfolds in this expansive novel that is at once a comic satire, a family story, and a profound exploration of our deepest cultural anxieties. Wickedly funny and wildly imaginative, Sweetness #9 questions whether what we eat truly makes us who we are.
In recent years, kesterite Cu2ZnSnS4 (CZTS) has become an interesting alternative to copper indium gallium (di)selenide (CIGS) due to its non-toxic and earth abundant constituents. A variety of methods is being used to fabricate kesterite thin films, such as coevaporation, sputtering, electrodeposition, spray pyrolysis and others. Most of them include an annealing step to stimulate elemental mixing and interdiffusion. Although conversion efficiencies of kesterite solar cells have increased among different research groups, the record value of 12.6% set by IBM in 2014 has not been broken yet. Therefore, experimental and theoretical studies are needed to predict the effect of the secondary phases and detrimental defects on the electronical properties of the CZTS based solar devices. The work presented here studies non-destructive techniques for in situ process control and monitoring. With the aim to detect phases and phase transitions to optimize crucial processing steps such as pre-annealing of metal precursors, high temperature annealing and vacuum deposition of Cu-Sn-Zn-S based thin films. The research consists of three parts in which Raman spectroscopy, X-ray diffraction (XRD) and reflectometry are used to explore this objective. In the first part Raman spectroscopy is investigated as an in situ monitoring technique during high temperature annealing of thin films. It investigates whether the occurrence of CZTS can be monitored when it is created from annealing a Mo/CTS/ZnS layered thin film. CuS, SnS, ZnS and CTS (Cu-Sn-S) films are prepared by physical vapor deposition. The Raman scattering intensity was compared to investigate whether their specific vibrational modes can be distinguished from each other at room temperature. Then, the CTS film is annealed between 50 and 550 °C in order to investigate whether CTS vibrational modes can be identified at elevated temperatures and to see which transitions take place within the thin film. Also, a CZTS reference film is annealed between 50 and 550 °C for reference purposes. The temperature dependence of the main CZTS modes is examined to investigate whether it can be used for in situ temperature control. Finally, a ZnS layer is deposited on the unannealed CTS film to obtain a Mo/CTS/ZnS layered film. This film is used to study the conversion of CTS/ZnS into CZTS at elevated temperatures. It was found that Raman spectroscopy can successfully be used to monitor formation of CZTS by identifying its main vibrational mode during the annealing process. The intensity of the CTS modes reduces at elevated temperatures. At 450 °C, the main CZTS mode at 338 cm-1 can be clearly identified. The second part also focuses on high temperature annealing. However, in this part the focus lies on annealing of the metal precursor films. It is explored whether specific alloys benefit or hinder the formation of secondary phases during formation of the CZTS absorber films. Also, to what extent this influences solar cell performance. In situ XRD was investigated for in situ monitoring of the pre-annealing process. Cu-poor metal precursor films are prepared by sputtering deposition. The precursors are annealed at 150 °C, 200 °C, 300 °C and 450 °C in a three zone tube furnace. The effect on the structural properties is analysed by XRD to study the formation mechanism of alloys. The precursor films are then sulfurized in a three zone tube furnace. The structural properties of the absorber are analysed and correlated with structures in the precursor. It is found that formation of SnS2 in the absorber is proportional to the remaining Sn in the pre-annealed precursor. Also, electron micrographs showed that pre-annealing temperature influences grain growth and surface precipitation of Sn-S and Zn-S. Pre-annealed absorbers at 450 °C did not exhibit these phases on the surface. Solar devices are fabricated from the absorber films and best performing devices were obtained from pre-annealed absorbers at 450 °C. They showed absence of Sn and SnS2 in, respectively, the precursor and absorber. It could be concluded that SnS2 phases are detrimental to device efficiency and that SnS2 XRD peak intensity follows an inverse proportionality with device efficiency. The third part explores reflectometry as a method to monitor a growing film during thermal evaporation in a physical vapor deposition (PVD) system. A set of six CZTS absorbers is examined by ex situ Raman spectroscopy and reflectometry to study the influence of secondary phases CuS and ZnS on reflection spectra. Composition strongly influences reflection spectra and CuS leaves a characteristic dip in the reflection spectrum at about 600 nm. An integration method was used to analyze this phenomenon quantitatively. Subsequently, a reflectometry setup is designed, developed and integrated in the PVD system. Four different CZTS co-evaporated and multi-layered films are deposited. Structural, morphological and vibrational properties are investigated. The reflection spectra are monitored during deposition and time-dependent reflection spectra are analyzed for characteristic aspects related to properties such as thickness, band gap and phase formation. CuS could not be detected in the films by the integration method due to the superposition of the CuS dip with developing interference fringes during film growth. However, in multilayered CTS/ZnS film it is found that the onset of ZnS deposition can be detected by increased reflection intensity due to reduced surface roughness. Additionally, the shifting onset of the interference fringes to lower photon energies can be used as a characteristic fingerprint during the deposition process. In conclusion, this work showed that Raman spectroscopy, XRD and reflectometry could be successfully implemented for in situ process control and monitoring of high temperature annealing and vacuum deposition of Cu-Sn-Zn-S based precursors and absorbers. The application of these in situ techniques can lead to the optimization of thin film material properties and solar cells. As such, this study has paved the way for further improvement of Cu-Sn-Zn-S based precursors and thin film absorbers. Innerhalb der letzten Jahre hat sich Kesterit Cu2ZnSnS4 (CZTS) aufgrund seiner ungiftigen Bestandteile und deren hoher Verfügbarkeit zu einer interessanten Alternative zu Kupfer Indium Gallium (di-)Selenid (CIGS) entwickelt. Zur Herstellung von Kesterit Dünnschichten wird eine Vielzahl von Methoden verwendet wie Ko-Verdampfung, Sputtern, Elektrodeposition, Spray Pyrolyse und andere. Die meisten davon beinhalten einen Temper-Schritt um die Durchmischung und Interdiffusion der Elemente zu stimulieren. Obwohl der Wirkungsgrad der Kersterit Solarzellen von verschiedenen Forschungsgruppen erhöht wurde, ist der Rekordwert von IBM von 12,6 % noch nicht gebrochen worden. Daher werden experimentelle und theoretische Studien benötigt, die den Einfluss von Fremdphasen und schädlichen Defekten auf die elektronischen Eigenschaften der CZTS Solarzellen vorhersagen. Die vorliegende Arbeit untersucht zerstörungsfreie Methoden für die in situ Prozesskontrolle und -überwachung. Dabei ist das Ziel, entscheidende Prozessschritte wie das Vortempern der Metall-Vorläufer sowie das Hochtemperatur-Tempern und die Vakuum-Abscheidung von Cu-Sn-Zn-S basierten Schichten zu optimieren. Die Untersuchung besteht aus drei Teilen, in denen Raman-Spektroskopie, Röntgendiffraktion (XRD) und Reflektometrie benutzt werden um dieses Ziel zu erreichen. Im ersten Teil wird die Ramanspektroskopie als in situ Methode zur Überwachung des Hochtemperatur-Temperns von Dünnschichten betrachtet. Es wird untersucht, ob das Entstehen von CZTS beim Tempern von gestapelten Mo/CTS/ZnS Dünnschichten beobachtet werden kann. CuS, SnS, ZnS und CTS (Cu-Sn-S) Schichten werden durch physikalische Gasabscheidung hergestellt. Die Intensität der Raman Streuung wurde vergleichen um zu untersuchen, ob die spezifischen Vibrations-Moden bei Raumtemperatur voneinander unterschieden werden können. Dann werden die CTS Schichten zwischen 50 °C und 550 °C getempert um zu untersuchen, ob die CTS Vibrations-Moden bei höheren Temperaturen identifiziert werden können und um festzustellen, welche Übergänge innerhalb der Schicht auftreten. Außerdem wurde eine CZTS Referenzschicht zwischen 50 °C und 550 °C für Referenzzwecke getempert worden. Die Temperaturabhängigkeit der CZTS Haupt-Moden werden betrachtet, um zu untersuche, ob sie für die in situ Temperaturüberwachung verwendet werden können. Abschließend wurde eine ZnS Schicht auf einem nicht getemperten CTS Film abgeschieden, um eine gestapelte Mo/CTS/ZnS Schicht zu erhalten. Diese Schicht wird verwendet, um die Umwandlung von CTS/ZnS zu CZTS bei erhöhten Temperaturen zu untersuchen. Es wurde festgestellt, dass Raman Spektroskopie erfolgreich verwendet werden kann, um die Bildung von CZTS zu überwachen, indem die Haupt-Vibrations-Moden während des Temperns identifiziert werden. Die Intensität der CTS Moden verringert sich bei höheren Temperaturen. Bei 450 °C kann die CZTS Hauptmode bei 338 cm-1 klar identifiziert werden. Der zweite Teil konzentriert sich ebenfalls auf das Hochtemperatur-Tempern. In diesem Teil liegt der Fokus allerdings auf dem Tempern der Metal-Vorläufer-Schichten. Es wird erforscht, ob bestimmte Legierungen die Entstehung von Fremdphasen während der Entstehung der CZTS Absorberschichten begünstigen oder hemmen und welchen Einfluss dies auf die Leistung der Solarzelle hat. In situ XRD wird verwendet, um die Prozesse des Vortemperns zu überwachen. Kupfer arme Metall-Vorläufer-Schichten werden durch Sputtern aufgetragen. Die Vorläufer werden bei 150 °C, 200 °C, 300 °C und 450 °C in einem Drei-Zonen-Röhren-Ofen getempert. Die Auswirkungen auf die strukturellen Eigenschaften werden mit XRD analysiert, um den Entstehungsmechanismus der Legierungen zu untersuchen. Die Vorläuferschichten werden dann in einem Drei-Zonen-Röhren-Ofen sulfurisiert. Die strukturellen Eigenschaften des Absorbers werden analysiert und mit der Struktur der Vorläufer korreliert. Es wurde festgestellt, dass die Entstehung von SnS2 im Absorber proportional zum verbleibenden Sn im vorgetemperten Vorläufer ist. Außerdem zeigen Bilder des Rasterelektronenmikroskops, dass die Temperatur des Vortemperns das Kornwachstum und das Abschieden von Sn-S und Zn-S an der Oberfläche beeinflusst. Bei 450 °C vorgetemperte Absorber weisen keine dieser Phasen an der Oberfläche auf. Solarzellen werden aus diesen Absorber-Schichten hergestellt und die besten Zellen entstanden aus den bei 450 °C vorgetemperten Absorbern. Bei diesen traten Sn und SnS2 weder im Vorläufer noch im Absorber auf. Es konnte geschlussfolgert werden, dass SnS2 Phasen schädlich für den Wirkungsgrad der Zellen sind und dass die Intensität der SnS2 XRD Peaks invers proportional zum Wirkungsgrad der Zellen ist. Der dritte Teil erforscht die Reflektometrie als Methode zur Überwachung des Schichtwachstums während des thermischen Verdampfens in einer Anlage zur physikalischen Gasabscheidung (PVD). Ein Satz aus sechs CZTS Absorbern wird mittels ex situ Raman-Spektroskopie und Reflektometrie vermessen, um den Einfluss der Fremdphasen CuS und ZnS auf die Reflexionsspektren zu untersuchen. Die Zusammensetzung beeinflusst die Reflexionsspektren stark und CuS hinterlässt eine charakteristische Senkung bei 600 nm im Reflexionsspektrum. Eine Integrationsmethode wurde verwendet um dieses Phänomen quantitativ zu analysieren. Anschließend wurde ein Reflektometrieaufbau entworfen, entwickelt und in die PVD-Anlage integriert. Vier verschiedene CZTS koverdampfte und Mehrschicht-Filme wurden abgeschieden. Strukturelle, morphologische und Vibrationseigenschaften werden untersucht. Die Reflexionsspektren werden während des Abscheidens aufgenommen und zeitabhängige Reflexionsspektren werden auf charakteristische Aspekte im Zusammenhang mit Eigenschaften wie Dicke, Bandlücke und Entstehung von Phasen untersucht. CuS konnte in den Schichten mit der Integrations-Methode wegen der Überlagerung der CuS Senkung mit dem entstehenden Interferenzmuster nicht detektiert werden. Allerdings wurde in gestapelten CTS/ZnS Schichten beobachtet werden, dass der Beginn der ZnS Abscheidung durch eine ansteigende Intensität der Reflektion aufgrund der verringerten Oberflächenrauigkeit detektiert werden kann. Zusätzlich kann die Verschiebung des Startpunkts der Interferenzen zu niedrigeren Photonenenergien als charakteristischer Fingerabdruck während des Abscheidungsprozesses verwendet werden. Zusammenfassend zeigt diese Arbeit, dass Raman-Spektroskopie, XRD und Reflektrometrie erfolgreich als in situ Prozesskontrolle und –überwachung bei Hochtemperatur-Tempern und Vakuum-Abscheidung von Cu-Sn-Zn-S basierten Vorläufern und Absorbern realisiert werden konnten. Die Anwendung dieser in situ Techniken kann zu einer Optimierung der Eigenschaften von Dünnschicht-Materialien und von Solarzellen führen. Als solche hat diese Untersuchung den Weg für weitere Verbesserung von Cu-Sn-Zn-S basierte Vorläufer und Dünnschicht-Absorber geebnet.
Plastics are high-performance materials of wide use in the built environment. Their versatile technical properties are particularly fascinating. A broad range of form-giving and finishing processes makes plastic especially interesting for complex geometries in combination with digital planning processes. Following the pioneering plastic structures of the 1970s, a number of spectacular buildings have in recent years highlighted the outstanding technical and aesthetic potential of the material. Until now, however, there has been no systematic treatment of the use of plastic in architecture. This book seeks to fill that gap by providing an introduction to the structural and design possibilities of plastic. It introduces the material and its specific characteristics, describes various types of plastic in terms of their relevance for building, explains processing technologies and presents typical products and components. A concise presentation of twenty-five international built projects – organized by the type of application and the plastic involved – documents the broad range of plastic in architecture. Finally, a look ahead at the future describes the current state of the art in materials research.
There are only few discoveries and new technologies in physical sciences that have the potential to dramatically alter and revolutionize our electronic world. Topological insulators are one of them. The present book for the first time provides a full overview and in-depth knowledge about this hot topic in materials science and condensed matter physics. Techniques such as angle-resolved photoemission spectrometry (ARPES), advanced solid-state Nuclear Magnetic Resonance (NMR) or scanning-tunnel microscopy (STM) together with key principles of topological insulators such as spin-locked electronic states, the Dirac point, quantum Hall effects and Majorana fermions are illuminated in individual chapters and are described in a clear and logical form. Written by an international team of experts, many of them directly involved in the very first discovery of topological insulators, the book provides the readers with the knowledge they need to understand the electronic behavior of these unique materials. Being more than a reference work, this book is essential for newcomers and advanced researchers working in the field of topological insulators.
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