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Books > Science & Mathematics > Chemistry > Analytical chemistry > Qualitative analytical chemistry > Chemical spectroscopy, spectrochemistry > General
This thesis presents significant advances in the imaging and theory of the ultrafast dynamics of surface plasmon polariton fields. The author details construction of a sub-10 femtosecond and sub-10 nanometer spatiotemporal resolution ultrafast photoemission microscope which is subsequently used for the discovery of topological meron and skyrmion-like plasmonic quasiparticles. In particular, this enabled the creation of movies of the surface plasmon polariton fields evolving on sub-optical wavelength scales at around 0.1 femtosecond per image frame undergoing vortex phase evolution. The key insight that the transverse spin of surface plasmon polaritons undergoes a texturing into meron or skyrmion-like topological quasiparticles (defined by the geometric charge of the preparation) follows. In addition, this thesis develops an analytical theory of these new topological quasiparticles, opening new avenues of research, while the ultrafast microscopy techniques established within will also be broadly applicable to studies of nanoscale optical excitations in electronic materials.
This guide to two-dimensional NMR spectroscopy helps the novice who
want e the technique, but needs a path through the bewildering
array of metho acronyms and the mathematical rigor found in most
books.
The goal of the book is to provide a simple and conceptually intuitive introduction to nonlinear spectroscopy via the formalism of quantum processes and wavepacket dynamics. Through this unified framework, the authors provide t simple analytical models, examples, and concepts to understand the workings of nonlinear spectroscopy in depth. This book provides an introduction to the field for advanced undergraduate, graduate students, and researchers, in a simple and pedagogical manner. It will also be useful for practitioners who are already familiar with the subject, but who want to develop a more conceptual understanding of it.
An introduction to underlying principles and experimental procedures using the newest strategies and techniques for obtaining extensive NMR assignments in biopolymers based on NMR data and the primary structure. Includes an extensive and non-mathematical discussion of 2D NMR and Nulcear Overhauser effects; resonance assignments and structure determination in proteins; and resonance assignments and structure determination in nucleic acids. Enables specialists and non-specialists to evaluate the potentialities and limitations of the method.
This book examines the most novel and state-of-the-art applications of biomaterials, with chapters that exemplify approaches with targeted drug delivery, diabetes, neurodegenerative diseases and cranioplasty implants. Expert contributors analyze biomaterials such as calcium phosphate, sol-gel and quenched glasses, metallic and polymer implants, bioactive glass, and polymer composites while also covering important areas such as the soft tissue replacement, apatites, bone regeneration and cell encapsulation. This book is appropriate for biomedical engineers, materials scientists, and clinicians who are seeking to implement the most advanced approaches and technologies with their patients.
This thesis presents a highly innovative study of the ultrafast structural and vibrational dynamics of hydrated phospholipids, the basic constituents of cell membranes. As a novel approach to the water-phospholipid interface, the author studies phosphate vibrations using the most advanced methods of nonlinear vibrational spectroscopy, including femtosecond two-dimensional infrared spectroscopy. He shows for the first time that the structure of interfacial water undergoes very limited fluctuations on a 300 fs time scale and that the lifetimes of hydrogen bonds with the phospholipid are typically longer than 10 ps. Such properties originate from the steric hindrance of water fluctuations at the interface and the orienting action of strong electric fields from the phospholipid head group dipoles. In an extensive series of additional experiments, the vibrational lifetimes of the different vibrations and the processes of energy dissipation are elucidated in detail.
This volume discusses the latest mass spectrometry (MS)-based technologies for proteoform identification, characterization, and quantification. Some of the topics covered in this book include sample preparation, proteoform separation, proteoform gas-phase fragmentation, and bioinformatics tools for MS data analysis. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Cutting-edge and comprehensive, Proteoform Identification: Methods and Protocols is a valuable resource for researchers in both academia and the biopharmaceutical industry who are interested in proteoform analysis using MS.
To anyone who is interested in surface chemical analysis of materials on the nanometer scale, this book is prepared to give appropriate information. Based on typical application examples in materials science, a concise approach to all aspects of quantitative analysis of surfaces and thin films with AES and XPS is provided. Starting from basic principles which are step by step developed into practically useful equations, extensive guidance is given to graduate students as well as to experienced researchers. Key chapters are those on quantitative surface analysis and on quantitative depth profiling, including recent developments in topics such as surface excitation parameter and backscattering correction factor. Basic relations are derived for emission and excitation angle dependencies in the analysis of bulk material and of fractional nano-layer structures, and for both smooth and rough surfaces. It is shown how to optimize the analytical strategy, signal-to-noise ratio, certainty and detection limit. Worked examples for quantification of alloys and of layer structures in practical cases (e.g. contamination, evaporation, segregation and oxidation) are used to critically review different approaches to quantification with respect to average matrix correction factors and matrix relative sensitivity factors. State-of-the-art issues in quantitative, destructive and non-destructive depth profiling are discussed with emphasis on sputter depth profiling and on angle resolved XPS and AES. Taking into account preferential sputtering and electron backscattering corrections, an introduction to the mixing-roughness-information depth (MRI) model and its extensions is presented.
Since the turn of the twenty-first century, applications of ion
mobility spectrometry (IMS) have diversified, expanding their
utility in the military and security spheres and entering the
realms of clinical practice and pharmaceutical exploration. Updated
and expanded, the third edition of Ion Mobility Spectrometry begins
with a comprehensive discussion of the fundamental theory and
practice of IMS. Divided into four sections Overview, Technology,
Fundamentals, and Applications the authors treat innovations and
advances in all aspects of IMS in a fresh, thorough, and revised
format. Features:
Mobility-based methods are no longer restricted to volatile
substances and indeed the many benefits of this technology
simplicity, convenience, and the low cost of technology have become
recognized as meritorious in a wide range of uses. This is also
true for the advantages of measurements high speed, distinctive
spectral features, and operation in ambient pressure with
thermalized ions. Ion Mobility Spectrometry, Third Edition serves
specialists in the field of IMS who are interested in the potential
of recent developments and researchers, engineers, and students who
want a comprehensive overview of this technology.
Presenting a detailed, hands-on approach to fluorescence spectroscopy, this book describes experiments that cover basic spectroscopy and advanced aspects of fluorescence spectroscopy. It emphasizes practical guidance, providing background on fundamental concepts as well as guidance on how to handle artifacts, avoid common errors, and interpret data. Nearly 150 experiments from biophysics, biochemistry, and the biomedical sciences demonstrate how methods are applied in practical applications. The result is a hands-on guide to the most important aspects of fluorescence spectroscopy, from steady-state fluorescence to advanced time-resolved fluorescence. Provides a complete overview of nearly 150 experiments using fluorescence spectroscopy, from basic to advanced applications Presents laboratory methods using a variety of instrumental setups with detailed discussion of data analysis and interpretations Covers steady-state phenomena, time-resolved phenomena, and advanced methods Spans biophysical, biochemical, and biomedical applications Describes related concepts, theory, and mathematical background as well as commercially available instruments used for measurements
This text offers an open-learning approach to Raman spectroscopy providing detail on instrumentation, applications and discussions questions throughout the book. It provides a valuable guide to assist with teaching Raman spectroscopy which is gaining attention in (analytical) chemistry, and as a consequence, teaching programs have followed. Today, education in Raman spectroscopy is often limited to theoretical aspects (e.g. selection rules), but practical aspects are usually disregarded. With these course notes, the author hopes to fill this gap and include information about Raman instrumentation and how it is interpreted. * Provides a user-friendly text that tackles the theoretical background, and offers everyday tips for common practice * Raman instrumentation and practical aspects, which are sometimes overlooked, are covered * Appropriate for students, and includes summaries, text boxes, illustrating the ideas with examples from research literature or providing background information or links with other courses * Written with an open-learning approach, this book will be ideal for use as a self-study guide or as the basis of a taught course with discussion and self-assessment questions throughout the text * Includes a comprehensive bibliography to guide the reader to more specialized texts and sources.
This book presents the current knowledge about superconductivity in high Tc cuprate superconductors. There is a large scientific interest and great potential for technological applications. The book discusses all the aspects related to all families of cuprate superconductors discovered so far. Beginning with the phenomenon of superconductivity, the book covers: the structure of cuprate HTSCs, critical currents, flux pinning, synthesis of HTSCs, proximity effect and SQUIDs, possible applications of high Tc superconductors and theories of superconductivity. Though a high Tc theory is still awaited, this book describes the present scenario and BCS and RVB theories. The second edition was significantly extended by including film-substrate lattice matching and buffer layer considerations in thin film HTSCs, brick-wall microstructure in the epitaxial films, electronic structure of the CuO2 layer in cuprates, s-wave and d-wave coupling in HTSCs and possible scenarios of theories of high Tc superconductivity.
This book is written for chemists, chemical engineers and chemical technologists who are not expert users of Raman spectroscopy technology. The background to the technique is covered along with its analytical applications. A brief introduction to Raman spectroscopy and instrumentation in general is included, along with detailed explanations of the advantages of Raman over other techniques. Emphasis is placed on the way it has been used to solve a range of analytical problems in the chemical and allied industries.
Volume III/48A continues the compilation of nuclear quadrupole resonance spectroscopy (NQRS) data of solid substances, covering the literarure from 1995 to the end of 2006. It provides 1270 NQRS data sets (measurement method, nucleus, temperature, quadrupole coupling constant, asymmetry parameter, resonance frequeny, remarks, references) for substances with Hill formulae ranging from Ag to C10H15. Included are the data for substances studied for the first time, as well as data for substances already present in previous volumes if the data published there could be completed or improved by the new studies.
Rasmus Brogaard's thesis digs into the fundamental issue of how the
shape of a molecule relates to its photochemical reactivity. This
relation is drastically different from that of ground-state
chemistry, since lifetimes of excited states are often comparable
to or even shorter than the time scales of conformational changes.
Combining theoretical and experimental efforts in femto-second
time-resolved photoionization Rasmus Brogaard finds that a
requirement for an efficient photochemical reaction is the
prearrangement of the constituents in a reactive conformation.
Covers the fundamental instrumentation and techniques Discusses HRMS-based phytochemical research details Focuses strictly on the phytochemical considerations
In recent years, optical properties of the unique atomic and molecular structures of materials have drawn great scientific interest. Linear optical properties of materials such as metals, metal oxides, magnetic oxides, and organic materials are based on energy transfer and find applications in wastewater treatment, forensic science, biomedical science, photovoltaics, nuclear technology, and LED displays. Nonlinear optical properties of materials are based on the nonlinear medium and find more advanced applications in frequency mixing generations and optical parametric oscillations. This book presents the underlying principles, implementation, and applications of the linear and nonlinear optical properties of materials and has been divided into two parts emphasizing these properties. The first part of the book, Linear Optics, discusses bimetallic nanoparticles in dielectric media and their integration to dye molecules to detect trace amounts of heavy metals at the nanometer level, as well as to enhance luminescence and image contrasts in forensic inspection and biomedical diagnosis. It shows how the integration of bimetallic nanoparticles into a ZnO matrix promotes broadening of the absorption spectrum from the ultraviolet to the visible wavelength. It explains the role of surface adsorption and photocatalytic degradation in dye-removal kinetics by Fe3O4 magnetic nanoparticles under pulsed white light. It also discusses the double-layer shielding tank design to safely store radioactive waste and photon propagation through the multilayer structures of a human tissue model. The second part of the book, Nonlinear Optics, presents general concepts such as electromagnetic theory, nonlinear medium, and wave propagation, as well as more advanced concepts such as second harmonic generation, phase matching, optical parametric interactions, different frequency generation, sum frequency generation, tunable laser, and optical resonant oscillator.
Covering a wide-ranging facet of a "gold-standard" targeted mass spectrometry (MS) method for the consistent detection and accurate quantification of preselected proteins in complex biological matrices, Selected Reaction Monitoring Mass Spectrometry (SRM-MS) in Proteomics: A Comprehensive View describes: The knowledge-based development of highly efficient SRM methodology including assay workflow, selection of proteins, peptides, transitions and its validation, and quality assessment Available bioinformatic tools - for both pre-acquisition method development and post-MS acquisition data analysis and data repositories Various relative and absolute quantification techniques SRM-MS' widespread applications in biomarker development and in clinical studies, as well as in the analysis of various posttranslational modifications (PTMs) Current challenges and contemporary trends to overcome those difficulties In addition, it features the historical development of modern-day mass spectrometry with its vivid applications and also covers basic MS instrumentation, ionization techniques, and various proteomics approaches. Comprehensive discussion, extensive references at the end of each chapter, and the list of review articles in the bibliography offer invaluable resources for advanced readings. Researchers from the undergraduate to postgraduate level and beyond in both academic or industry settings studying and working on mass spectrometry and/or proteomics will benefit from this book.
"Photoelectrochemical Hydrogen Production" describes the principles and materials challenges for the conversion of sunlight into hydrogen through water splitting at a semiconducting electrode. Readers will find an analysis of the solid state properties and materials requirements for semiconducting photo-electrodes, a detailed description of the semiconductor/electrolyte interface, in addition to the photo-electrochemical (PEC) cell. Experimental techniques to investigate both materials and PEC device performance are outlined, followed by an overview of the current state-of-the-art in PEC materials and devices, and combinatorial approaches towards the development of new materials. Finally, the economic and business perspectives of PEC devices are discussed, and promising future directions indicated. Photoelectrochemical Hydrogen Production is a one-stop resource for scientists, students and R&D practitioners starting in this field, providing both the theoretical background as well as useful practical information on photoelectrochemical measurement techniques. Experts in the field benefit from the chapters on current state-of-the-art materials/devices and future directions.
This thesis identifies the turning point in chain length, after which alkanes self-solvate into a folded structure instead of an extended stretched conformation. After this turning point, London dispersion forces rearrange isolated n-alkanes into a particular hairpin-structure, while for shorter chain lengths, a simple stretched conformation is energetically preferred. This thesis can locate the experimental turning point for the first time in an interaction-free manner from measurements of unbranched alkanes at low temperatures in supersonic jet expansions. It contains a detailed analysis of the vibrational Raman spectra of the chain molecules, which is supported by comprehensive quantum chemical simulations. In this way, the detailed balance between inter-chain attraction and conformational flexibility can be quantified. The investigations are complemented by measurements of perfluoroalkanes and similarities and differences between the compounds are discussed. Furthermore, Nils Luttschwager determines the stiffnesses (elastic moduli) of two of the most common industrial polymers: polyethylene and polytetrafluorethylene. He uses in this thesis a sophisticated extrapolation to calculate this value from quantities of their building blocks, showing that the single polymer molecules can be as stiff as a rod of steel.
Within the last 30 years, electron energy-loss spectroscopy (EELS) has become a standard analytical technique used in the transmission electron microscope to extract chemical and structural information down to the atomic level. In two previous editions, "Electron Energy-Loss Spectroscopy in the Electron Microscope" has become the standard reference guide to the instrumentation, physics and procedures involved, and the kind of results obtainable. Within the last few years, the commercial availability of lens-aberration correctors and electron-beam monochromators has further increased the spatial and energy resolution of EELS. This thoroughly updated and revised Third Edition incorporates these new developments, as well as advances in electron-scattering theory, spectral and image processing, and recent applications in fields such as nanotechnology. The appendices now contain a listing of inelastic mean free paths and a description of more than 20 MATLAB programs for calculating EELS data.
This book gathers, in a single resource, knowledge about matrix-assisted laser desorption ionisation (MALDI) mass spectrometry imaging. It includes fundamentals in the MALDI ionisation process, different source geometries and capabilities, detection systems and the latest research and applications in the range of -omics area as well as other broader areas. Chapters will touch on dedicated sample preparation protocols specific for the class of compounds of interest, instrumentation used with strengths and current limitations, strategies for structural analysis and identification and applications. It will be a welcomed addition to the literature in this fast-moving field and provide a guide to new innovations and applications especially in metabolomics and proteomics. With contributions from leading experts, this book will be an authoritative guide to this method. Aimed at postgraduate and professional researchers, in academia and in the industrial market where it has direct application to clinical research. It will be a supporting volume for those just entering the field as well as experienced practitioners.
This book discusses chemometric methods for spectroscopy analysis including NIR, MIR, Raman, NMR, and LIBS, from the perspective of practical applied spectroscopy. It covers all aspects of chemometrics associated with analytical spectroscopy, including representative sample selection algorithm, outlier detection algorithm, model updating and maintenance algorithm and strategy and calibration performance evaluation methods.To provide a systematic and comprehensive overview the latest progress of chemometric methods including recent scientific research and practical applications are presented. In addition the book also highlights the improvement of classical algorithms and the extension of common strategies. It is therefore useful as a reference book for researchers engaged in analytical spectroscopy technology, chemometrics, analytical instruments and other related fields.
This book describes the history of and recent developments in cobaltite and the spin-crossover (SC) phenomena. It offers readers an overview of essential research conducted on cobaltite and introduces them to the fundamentals of condensed matter physics research. The book consists of two parts. The first part reviews SC phenomena, covering the fundamental physics of SC phenomena and basic material properties of cobaltite. The second part focuses on recent topics in SC cobaltite, including the optical and dynamical features of cobaltite, thin material fabrication, and thermoelectric properties. The comprehensive coverage and clearly structured topics will especially appeal to newcomers to the field of state-of-the-art research on cobaltite and SC physics.
Leading experts discuss the characteristics, advantages, limitations and future aspects of modern spectroscopic techniques for environmental analysis. Demonstrates how these methods can be applied to trace gas detection and assessment. Concentrates on the latest techniques—both laser and non-laser based—which offer advantages for air pollution and gas monitoring as opposed to more conventional methods. Numerous examples of applications illustrate the potential of the techniques backed up by cutting-edge information and representative data. |
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