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Books > Science & Mathematics > Science: general issues > Scientific equipment & techniques, laboratory equipment > Microscopy
The Nobel Prize of 1986 on Sc- ningTunnelingMicroscopysignaled a new era in imaging. The sc- ning probes emerged as a new - strument for imaging with a p- cision suf?cient to delineate single atoms. At ?rst there were two - the Scanning Tunneling Microscope, or STM, and the Atomic Force Mic- scope, or AFM. The STM relies on electrons tunneling between tip and sample whereas the AFM depends on the force acting on the tip when it was placed near the sample. These were quickly followed by the M- netic Force Microscope, MFM, and the Electrostatic Force Microscope, EFM. The MFM will image a single magnetic bit with features as small as 10nm. With the EFM one can monitor the charge of a single electron. Prof. Paul Hansma at Santa Barbara opened the door even wider when he was able to image biological objects in aqueous environments. At this point the sluice gates were opened and a multitude of different instruments appeared. There are signi?cant differences between the Scanning Probe Microscopes or SPM, and others such as the Scanning Electron Microscope or SEM. The probe microscopes do not require preparation of the sample and they operate in ambient atmosphere, whereas, the SEM must operate in a vacuum environment and the sample must be cross-sectioned to expose the proper surface. However, the SEM can record 3D image and movies, features that are not available with the scanning probes.
This text guides you through the principles and practical techniques of confocal and multiphoton microscopy. It also describes the historical connections and parallel inventions that resulted in modern techniques of live cell imaging and their use in biology and medicine. You will find comparisons of different types of confocal and multiphoton microscopes, solutions to the problems one would encounter when using various microscopic techniques, tips on selecting equipment, and an extensive annotated bibliography of additional resources.
A complete examination of the uses of the atomic force microscope in biology and medicine This cutting-edge text, written by a team of leading experts, is
the first detailed examination of the latest, most powerful
scanning probe microscope, the atomic force microscope (AFM). Using
the AFM, in combination with conventional tools and techniques,
readers gain a profound understanding of the cell, subcellular
organelles, and biomolecular structure and function.
This book provides a comprehensive account of the theory of image formation in a confocal fluorescence microscope as well as a practical guideline to the operation of the instrument, its limitations, and the interpretation of confocal microscopy data. The appendices provide a quick reference to optical theory, microscopy-related formulas and definitions, and Fourier theory.
Deals with both the ultrashort laser-pulse technology in the few- to mono-cycle region and the laser-surface-controlled scanning-tunneling microscopy (STM) extending into the spatiotemporal extreme technology. The former covers the theory of nonlinear pulse propagation beyond the slowly-varing-envelope approximation, the generation and active chirp compensation of ultrabroadband optical pulses, the amplitude and phase characterization of few- to mono-cycle pulses, and the feedback field control for the mono-cycle-like pulse generation. In addition, the wavelength-multiplex shaping of ultrabroadband pulses, and the carrier-phase measurement and control of few-cycle pulses are described. The latter covers the CW-laser-excitation STM, the femtosecond-time-resolved STM and atomic-level surface phenomena controlled by femtosecond pulses.
Three-dimensional x-ray diffraction (3DXRD) microscopy is a novel experimental method for structural characterisation of polycrystalline materials. The position, morphology, phase, strain and crystallographic orientation of hundreds of grains or sub-grain embedded within mm-cm thick specimens can be determined simultaneously. Furthermore, the dynamics of the individual structural elements can be monitored during typical processes such as deformation or annealing. The book gives a comprehensive account of the methodology followed by a summary of selected applications. The method is presented from a mathematical/crystallographic point-of-view but with sufficient hands-on details to enable the reader to plan his or her own experiments. The scope of applications includes work in materials science and engineering, geophysics, geology, chemistry and pharmaceutical science.
Inrecentyears, anew?eldinsciencehasbeengrowingtremendously, i. e., theresearch on nanostructures. In the early beginning, impetus came from different disciplines, like physics, chemistry, and biology, that proposed the possibility of producing str- turesinthesub-micronrange. Theworldwideoperatingelectroniccompaniesrealized that this would open up new ?elds of application, and they proposed very challe- ing projects for the near future. Particularly, nanomagnetism became the focus of new concepts and funding programs, like spintronics or magnetoelectronics. These new concepts created a strong impact on the research ?eld of fabricating nanoscaled magnetic structures. Simultaneously, a demand for appropriate analyzing tools with high spatial resolution arose. Since then, the development of new techniques and the improvement of existing techniques that have the potential of analyzing magnetic properties with high spatial resolution have undergone a renaissance. Aiming at s- tems in the range of some 10nm means that the analyzing techniques have to go beyond that scale in their resolving power. In parallel to the efforts in the commercial sector, a new branch has been established in basic research, i. e., nanomagnetism, that is concerned with the underlying physics of the fabrication, analyzing techniques, and nano-scaled structures. The progress in one of these ?elds is inherently coupled with better knowledge or understanding and, hence, success in the other ?elds. The imaging technique as a synonym for spatial resolution plays a key role in this triangle. In this book, we bring together the state-of-the-art techniques of magnetic im- ing."
This volume examines the physical and technical foundation for recent progress in applied near-field scanning probe techniques. It constitutes a timely comprehensive overview of SPM applications, now that industrial applications span topographic and dynamical surface studies of thin-film semiconductors, polymers, paper, ceramics, and magnetic and biological materials. After laying the theoretical background of static and dynamic force microscopies, including sensor technology and tip characterization, contributions detail applications such as macro- and nanotribology, polymer surfaces, and roughness investigations. The final part on industrial research addresses special applications of scanning force nanoprobes such as atomic manipulation and surface modification, as well as single electron devices based on SPM. Scientists and engineers either using or planning to use SPM techniques will benefit from the international perspective assembled in the book.
A comprehensive tutorial for researchers and practitioners involved in surface science. The basics of the scanning probe microscopy techniques as well as material class-specific applications are thoroughly discussed. The book gives access to these methods for advanced students and allows researchers to apply these powerful atomic-resolution imaging techniques to new systems.
Electron microscopy is frequently portrayed as a discipline that stands alone, separated from molecular biology, light microscopy, physiology, and biochemistry, among other disciplines. It is also presented as a technically demanding discipline operating largely in the sphere of "black boxes" and governed by many absolute laws of procedure. At the introductory level, this portrayal does the discipline and the student a disservice. The instrumentation we use is complex, but ultimately understandable and, more importantly, repairable. The procedures we employ for preparing tissues and cells are not totally understood, but enough information is available to allow investigators to make reasonable choices concerning the best techniques to apply to their parti cular problems. There are countless specialized techniques in the field of electron and light microscopy that require the acquisition of specialized knowledge, particularly for interpretation of results (electron tomography and energy dispersive spectroscopy immediately come to mind), but most laboratories possessing the equipment to effect these approaches have specialists to help the casual user. The advent of computer operated electron microscopes has also broadened access to these instruments, allowing users with little technical knowledge about electron microscope design to quickly become operators. This has been a welcome advance, because earlier instru ments required a level of knowledge about electron optics and vacuum systems to produce optimal photographs and to avoid "crashing" the instruments that typically made it difficult for beginners."
This is a book about fishermen's reasons for obeying fisheries law. The fish harvesting industry has become subject to state interference to an increasing extent over the past twenty years. As natural resources become scarce and subsequent fisheries regulations abound, the question of law-abidingness is brought to the public agenda. However, there is still little empirical data as regards the dynamics of compliance in this field, and this book aims to meet a demand for in-depth knowledge. The cases studied can be regarded as instances of economies dependent on the harvesting of natural resources for both household and the market, and the study aims to contribute to the building of more adequate theory on the dynamics of compliance in such economies. However, focusing on a specific type of setting seldom constitutes a safe escape route for getting away from more pervasive sociological questions, and it certainly does not in this case. As any attempt to explain social phenomena, this study is faced with the fundamental sociological question of how the acts of individuals can best be understood. The question concerns the interface between the individual and the collectivity - between collective morality and self-interest. It thus deals with classical sociological issues such as the nature and regulatory capacity of group norms and sanctions, and the forms and roles of rationality and strategic action.
The natural, biological, medical, and related sciences would not be what they are today without the microscope. After the introduction of the optical microscope, a second breakthrough in morphostructural surface analysis occurred in the 1940s with the development of the scanning electron microscope (SEM), which, instead of light (i. e. , photons) and glass lenses, uses electrons and electromagnetic lenses (magnetic coils). Optical and scanning (or transmission) electron microscopes are called "far-field microscopes" because of the long distance between the sample and the point at which the image is obtained in comparison with the wavelengths of the photons or electrons involved. In this case, the image is a diffraction pattern and its resolution is wavelength limited. In 1986, a completely new type of microscopy was proposed, which, without the use of lenses, photons, or electrons, directly explores the sample surface by means of mechanical scanning, thus opening up unexpected possibilities for the morphostructural and mechanical analysis of biological specimens. These new scanning probe microscopes are based on the concept of near-field microscopy, which overcomes the problem of the limited diffraction-related resolution inherent in conventional microscopes. Located in the immediate vicinity of the sample itself (usually within a few nanometers), the probe records the intensity, rather than the interference signal, thus significantly improving resolution. Since the most we- known microscopes of this type operate using atomic forces, they are frequently referred to as atomic force microscopes (AFMs).
This volume focuses on fundamental aspects of nano-electro-optics. Starting with fiber probes and related devices for generating and detecting the optical near-field with high efficiency and resolution, the next chapter addresses the modulation of an electron beam by optical near-fields. Further topics include: fluorescence spectroscopy, in which sample molecules are excited by the evanescent surface plasmon field close to metallic surfaces; spatially resolved near-field photoluminescence spectroscopy of semiconductor quantum dots, which will become an essential issue in future electro-optical devices and systems; and, finally, the quantum theory of the optical near-field. This latter theory accounts for all the essential features of the interaction between optical near-fields and nanomaterials, atoms and molecules. Together these overviews will be a valuable resource for engineers and scientists working in the field of nano-electro-optics.
The damage that can occur in certain fibrous raw materials or in textiles during their production and storage of textiles is expertly described in this book by Karl Mahall. In particular, he explains methods for finding concealed textile defects by using microscopic analysis.Besides minor improvements and corrections, the new edition contains a new chapter "Poultry Feathers as Filling Material for Bedding and Textiles - Analysis of Faults." The reason for its inclusion is that natural feathers and down are not only used as a filling material for bedding but also for garments, such as anoraks, coats and sleeping bags.This book is especially useful as a manual for both chemical and textile engineers and quality engineers. It is also a useful reference for others in the textile industry in general.
Since 1995, the noncontact atomic force microscope (NC-AFM) has achieved remarkable progress. Based on nanomechanical methods, the NC-AFM detects the weak attractive force between the tip of a cantilever and a sample surface. This method has the following characteristics: it has true atomic resolution; it can measure atomic force interactions, i.e. it can be used in so-called atomic force spectroscopy (AFS); it can also be used to study insulators; and it can measure mechanical responses such as elastic deformation. This is the first book that deals with all of the emerging NC-AFM issues.
Fabrication technologies for nanostructured devices have been developed recently, and the electrical and optical properties of such nanostructures are a subject of advanced research.This book describes the different approaches to spectroscopic microscopy, i.e., Electron Beam Probe Spectroscopy, Spectroscopic Photoelectron Microscopy, and Scanning Probe Spectroscopy. It will be useful as a compact source of reference for the experienced reseracher, taking into account at the same time the needs of postgraduate students and nonspecialist researchers by using a tutorial approach throughout.
Analytical electron microscopy is one of the most powerful tools today for characterization of the advanced materials that support the nanotechnology of the twenty-first century. In this book the authors clearly explain both the basic principles and the latest developments in the field. In addition to a fundamental description of the inelastic scattering process, an explanation of the constituent hardware is provided. Standard quantitative analytical techniques employing electron energy-loss spectroscopy and energy-dispersive X-ray spectroscopy are also explained, along with elemental mapping techniques. Included are sections on convergent beam electron diffraction and electron holography utilizing the field emission gun. With generous use of illustrations and experimental data, this book is a valuable resource for anyone concerned with materials characterization, electron microscopy, materials science, crystallography, and instrumentation.
Despite their importance in terms of employment and income generation, inshore fisheries have been a neglected area of study. The review of the common fisheries policy, especially in the light of the need to re-examine the derogation which reserves access to the inshore zone to coastal state vessels, provides an opportunity to redress the balance. With contributions from leading authorities on fisheries management, the book takes an in-depth look at seven European countries, examining the basis for the definition of inshore fisheries, evaluating their status, and describing the salient characteristics of their management. The national studies form the basis for cross-cultural analyses of the social organisation, cultural norms, economic objectives, and institutional structures of inshore fisheries in Europe. Finally, a number of key issues relating to the future of inshore fisheries management in a more integrated approach are examined. Overall the volume reaffirms the invaluable role played by inshore fisheries in the local and regional economies of Europe's complex coastline.
Transmission electron microscopy (TEM) is now recognized as a crucial tool in materials science. This book, authored by a team of expert Chinese and international authors, covers many aspects of modern electron microscopy, from the architecture of novel electron microscopes, advanced theories and techniques in TEM and sample preparation, to a variety of hands-on examples of TEM applications. Volume II illustrates the important role that TEM is playing in the development and characterization of advanced materials, including nanostructures, interfacial structures, defects, and macromolecular complexes.
Transmission electron microscopy (TEM) is now recognized as a crucial tool in materials science. This book, authored by a team of expert Chinese and international authors, covers many aspects of modern electron microscopy, from the architecture of novel electron microscopes, advanced theories and techniques in TEM and sample preparation, to a variety of hands-on examples of TEM applications. Volume I concentrates on the newly developed concepts and methods which are making TEM a powerful and indispensible tool in materials science.
Solid state NMR is rapidly emerging as a universally applicable method for the characterization of ordered structures that cannot be studied with solution methods or diffraction techniques. This proceedings -; from a recent international workshop - captures an image of the latest developments and future directions for solid state NMR in biological research, particularly on membrane proteins. Detailed information on how hormones or drugs bind to their membrane receptor targets is needed, e.g. for rational drug design. Higher fields are bringing clear improvements, and the power of solid state NMR techniques for studying amorphous and membrane associated peptides, proteins and complexes is shown by examples of applications at ultra-high fields. Progress in protein expression, experimental design and data analysis are also presented by leaders in these research areas.
Since the pioneering discoveries of Hodgkin, Huxley, and Katz, it has been clear that specific ion conductance pathways underlie electrical act- ity. Over the ensuing 50 years, there has been ever increasing, and occasi- ally explosive, changes in the scope of efforts to understand ion channel behavior. The introduction of patch clamp technology by Erwin Neher and Bert Sakmann about 20 years ago led to the realization of the great variety of novel ion channel species, and the subsequent revolution in cl- ing has revealed an even greater diversity of the underlying molecular entities. Today, advances in the study of ion channel structure and function c- tinue at a high pace, from angstrom resolution imaging of crystallized ch- nels to their genetic manipulations in animals. In this regard, the field is a balanced one that inquires not only what ion channel entities are there, or how they operate, but also where are these molecular electronic switches? However, this balance is not particularly well presented to the general sci- tific audience or to specialists in the field. There are plenty of wonderful and useful books and monographs, as well as conferences and meetings on v- tually every aspect of ion channel structure and function. However, we are unaware that the channel localization theme has been considered in a u- fied forum. |
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