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Books > Science & Mathematics > Chemistry > Analytical chemistry > Qualitative analytical chemistry

Auger- and X-Ray Photoelectron Spectroscopy in Materials Science - A User-Oriented Guide (Paperback, 2013 ed.): Siegfried... Auger- and X-Ray Photoelectron Spectroscopy in Materials Science - A User-Oriented Guide (Paperback, 2013 ed.)
Siegfried Hofmann
R8,639 Discovery Miles 86 390 Ships in 10 - 15 working days

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.

Handbook of the Band Structure of Elemental Solids - From Z = 1 To Z = 112 (Hardcover, 2nd ed. 2015): Dimitris A.... Handbook of the Band Structure of Elemental Solids - From Z = 1 To Z = 112 (Hardcover, 2nd ed. 2015)
Dimitris A. Papaconstantopoulos
R7,415 Discovery Miles 74 150 Ships in 10 - 15 working days

This handbook presents electronic structure data and tabulations of Slater-Koster parameters for the whole periodic table. This second edition presents data sets for all elements up to Z = 112, Copernicium, whereas the first edition contained only 53 elements.

In this new edition, results are given for the equation of state of the elements together with the parameters of a Birch fit, so that the reader can regenerate the results and derive additional information, such as Pressure-Volume relations and variation of Bulk Modulus with Pressure. For each element, in addition to the equation of state, the energy bands, densities of states and a set of tight-binding parameters is provided.

For a majority of elements, the tight-binding parameters are presented for both a two- and three-center approximation. For the hcp structure, new three-center tight-binding results are given. Other new material in this edition include: energy bands and densities of states of all rare-earth metals, a discussion of the McMillan-Gaspari-Gyorffy theories and a tabulation of the electron-ion interaction matrix elements. The evaluation of the Stoner criterion for ferromagnetism is examined and results are tabulated. This edition also contains two new appendices discussing the effects of spin-orbit interaction and a modified version of Harrison's tight-binding theory for metals which puts the theory on a quantitative basis.

Studying Cell Metabolism and Cell Interactions Using Microfluidic Devices Coupled with Mass Spectrometry (Paperback): Huibin Wei Studying Cell Metabolism and Cell Interactions Using Microfluidic Devices Coupled with Mass Spectrometry (Paperback)
Huibin Wei
R3,273 Discovery Miles 32 730 Ships in 10 - 15 working days

This thesis describes a new approach for cell analysis by the rapid developing microfluidic technology. The nominee has made great contributions to develop a new analysis platform which combined microfluidic devices with mass spectrometry to determine the trace compounds secreted by cells. Based on this analysis platform, she studied the specific cell secreting behaviors under controlled microenvironment, of which the secretion compounds were qualified and semi-quantified by mass spectrometry. A novel cell sorting device integrated homogenous porous PDMS membrane was invented to classify cells from real samples based on the size difference. The nominee further studied the signal transmission between different cells, and the signal chemicals were qualitative and quantitative monitored by the analysis platform. This indicates the potential significant application of the new cell analysis platform in medicine screening and early diagnosis.

Transmission Electron Microscopy and Diffractometry of Materials (Paperback, 4th ed. 2013): Brent Fultz, James Howe Transmission Electron Microscopy and Diffractometry of Materials (Paperback, 4th ed. 2013)
Brent Fultz, James Howe
R2,851 Discovery Miles 28 510 Ships in 10 - 15 working days

This book explains concepts of transmission electron microscopy (TEM) and x-ray diffractometry (XRD) that are important for the characterization of materials. The fourth edition adds important new techniques of TEM such as electron tomography, nanobeam diffraction, and geometric phase analysis. A new chapter on neutron scattering completes the trio of x-ray, electron and neutron diffraction. All chapters were updated and revised for clarity. The book explains the fundamentals of how waves and wavefunctions interact with atoms in solids, and the similarities and differences of using x-rays, electrons, or neutrons for diffraction measurements. Diffraction effects of crystalline order, defects, and disorder in materials are explained in detail. Both practical and theoretical issues are covered. The book can be used in an introductory-level or advanced-level course, since sections are identified by difficulty. Each chapter includes a set of problems to illustrate principles, and the extensive Appendix includes laboratory exercises.

Derivative Spectrophotometry and Electron Spin Resonance (ESR) Spectroscopy for Ecological and Biological Questions (Paperback,... Derivative Spectrophotometry and Electron Spin Resonance (ESR) Spectroscopy for Ecological and Biological Questions (Paperback, 2013 ed.)
Vladimir S. Saakov, Valery Z. Drapkin, Alexander I. Krivchenko, Eugene V. Rozengart, Yuri V. Bogachev, …
R5,593 Discovery Miles 55 930 Ships in 10 - 15 working days

This book provides a multidisciplinary overview to the application of high order derivative spectrophotometry and Electron Spin Resonance (ESR) spectroscopy in biology and ecology. The characteristics of the principle methods as well as the generation of reliable spectra are discussed in general terms allowing the reader to gain an idea of these methods' potentials. Furthermore the authors give an extended overview to the spectroscopic and spectro-photometric analysis of specific biological materials. This volume is a well condensed description of an analytical method and a clear review to its application in biology and related fields and an essential tool for researchers who are new in the field of spectroscopic methods and their applications in the life sciences.

Terahertz Spectroscopy and Imaging (Paperback, 2013 ed.): Kai-Erik Peiponen, Axel Zeitler, Makoto Kuwata-Gonokami Terahertz Spectroscopy and Imaging (Paperback, 2013 ed.)
Kai-Erik Peiponen, Axel Zeitler, Makoto Kuwata-Gonokami
R7,918 Discovery Miles 79 180 Ships in 10 - 15 working days

This book presents the state-of-the-art of Terahertz spectroscopy. It is a modern source for a beginners and researcher interested in THz spectroscopy. The basics and physical background of THz spectroscopy and technology are explained, and important applications are described. The book presents the highlights of scientific research in the field of THz science and provides an excellent overview of the field and future directions of research. Over the last decade the field of terahertz spectroscopy has developed into one of the most rapidly growing fields of spectroscopy with large impact across a wide range of scientific disciplines. Due to substantial advances in femtosecond laser technology, terahertz time-domain spectroscopy (THz-TDS) has established itself as the dominant spectroscopic technique for experimental scientists interested in measurements in this frequency range. In solids and liquids terahertz radiation is at resonance with both phonon modes and hydrogen bonding modes which makes it an ideal tool to study the interaction between molecules in a unique way, thus opening a wealth of opportunities for research in physics, chemistry, biology, materials science and pharmaceuticals. This book provides an easy access to scientists, engineers and students alike who want to understand the theory and applications of modern terahertz spectroscopy.

NMR Spectroscopy in Liquids and Solids (Paperback): Vladimir I. Bakhmutov NMR Spectroscopy in Liquids and Solids (Paperback)
Vladimir I. Bakhmutov
R1,968 Discovery Miles 19 680 Ships in 12 - 17 working days

NMR Spectroscopy in Liquids and Solids provides an introduction of the general concepts behind Nuclear Magnetic Resonance (NMR) and its applications, including how to perform adequate NMR experiments and interpret data collected in liquids and solids to characterize molecule systems in terms of their structure and dynamics. The book is composed of ten chapters. The first three chapters consider the theoretical basis of NMR spectroscopy, the theory of NMR relaxation, and the practice of relaxation measurements. The middle chapters discuss the general aspects of molecular dynamics and their relationships to NMR, NMR spectroscopy and relaxation studies in solutions, and special issues related to NMR in solutions. The remaining chapters introduce general principles and strategies involved in solid-state NMR studies, provide examples of applications of relaxation for the determination of molecular dynamics in diamagnetic solids, and discuss special issues related to solid state NMR- including NMR relaxation in paramagnetic solids. All chapters are accompanied by references and recommended literature for further reading. Many practical examples of multinuclear NMR and relaxation experiments and their interpretations are also presented. The book is ideal for scientists new to NMR, students, and investigators working in the areas of chemistry, biochemistry, biology, pharmaceutical sciences, or materials science.

Mass Spectrometry Imaging of Small Molecules (Hardcover, 2015 ed.): Lin He Mass Spectrometry Imaging of Small Molecules (Hardcover, 2015 ed.)
Lin He
R4,197 Discovery Miles 41 970 Ships in 10 - 15 working days

Mass Spectroscopy Imaging (MSI) has emerged as an enabling technique to provide insight into the molecular entities within cells, tissues and whole-body samples and to understand inherent complexities within biological metabolomes. In "Mass ""Spectrometry"" Imaging of Small Molecules"" Methods and Protocols," experts in the MSI field present techniques for 2D and 3D visualization and quantification of a wide array of small molecular species present in biologically relevant samples. Chapters provide detailed operational instructions from sample preparation to method selection, from comparative quantification to structural identification and from data collection to visualization of small molecule mapping in complex samples. Written in the 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 protocols and notes on troubleshooting and avoiding known pitfalls.

Authoritative and easily accessible, "Mass ""Spectrometry"" Imaging of Small Molecules"" Methods and Protocols" aims to bring the rapidly maturing methods of metabolic imaging to life science researchers and to minimize technical intimidation in adapting new technological platforms in biological research.

Vacuum Technology - Practice for Scientific Instruments (Paperback, 2008 ed.): Nagamitsu Yoshimura Vacuum Technology - Practice for Scientific Instruments (Paperback, 2008 ed.)
Nagamitsu Yoshimura
R5,780 Discovery Miles 57 800 Ships in 10 - 15 working days

In this book, Yoshimura provides a review of the UHV related development during the last decades. His very broad experience in the design enables him to present us this detailed reference. After a general description how to design UHV systems, he covers all important issue in detail, like pumps, outgasing, Gauges, and Electrodes for high voltages. Thus, this book serves as reference for everybody using UVH in scientific equipment.

LACAME 2008 - Proceedings of the 11th Latin American Conference on the Applications of the Moessbauer Effect, (LACAME 2008)... LACAME 2008 - Proceedings of the 11th Latin American Conference on the Applications of the Moessbauer Effect, (LACAME 2008) held in La Plata, 9-14 November 2008 (Paperback, 2009 ed.)
J. Desimoni, C.P. Ramos, Bibiana Arcondo, F.D. Saccone, R.C. Mercader
R4,485 Discovery Miles 44 850 Ships in 10 - 15 working days

Proceedings of the Eleventh Latin American Conference on the Applications of the Moessbauer Effect, La Plata, Argentina, 9-14 November 2008. The broad scope of the Applications of the Moessbauer Effect to interdisciplinary subjects makes this volume an outstanding source of information to researchers and graduate students, who will find the unique results of Moessbauer spectroscopy a valuable aid and complement to their research in conjunction with other techniques. In this volume, applications to mineralogy, catalysis, soil science, amorphous materials, nanoparticles, magnetic materials, nanotechnology, metallurgy, corrosion, and magnetism, have been put together in original works produced by invited speakers and different research teams across the continent.

LACAME 2004 - Proceedings of the 9th Latin American Conference on the Applications of the Moessbauer Effect, (LACAME 2004) held... LACAME 2004 - Proceedings of the 9th Latin American Conference on the Applications of the Moessbauer Effect, (LACAME 2004) held in Mexico City, Mexico, 19-24 September 2004 (Paperback, 2005 ed.)
R.C. Mercader, J. R. Gancedo, A. Cabral Prieto, E.Baggio Saitovitch
R2,957 Discovery Miles 29 570 Ships in 10 - 15 working days

Proceedings of the 9th Latin American Conference on the Applications of the Moessbauer Effect, LACAME 2004, held in Mexico City, Mexico, 19-24 September 2004. This volume demonstrates the way in which researchers, on a wide range of topics, many interdisciplinary, find the applications of the Moessbauer Effect an outstanding method whose results, sometimes unique, complements and improves the information obtained by other techniques to deepen the understanding of the matter under research. This volume comprises research papers, reviews, and short communications recording original investigations on applications to diverse areas like archaeology, metallurgy, soil science, geology, industrial applications, new instrumentation, corrosion, and chemical applications. The papers present the latest scientific work of various regional investigators and of the invited speakers from abroad that have brought their perspectives to the meeting.

Theoretical Surface Science - A Microscopic Perspective (Paperback, 2nd ed. 2009): Axel Gross Theoretical Surface Science - A Microscopic Perspective (Paperback, 2nd ed. 2009)
Axel Gross
R2,467 Discovery Miles 24 670 Ships in 10 - 15 working days

Progress continues in the theoretical treatment of surfaces and processes on surfaces based on first-principles methods, i.e. without invoking any empirical parameters. In this book, the theoretical concepts and computational tools necessary and relevant for a microscopic approach to the theoretical description of surface science is presented, together with a detailed discussion of surface phenomena. This makes the book suitable for both graduate students and for experimentalists seeking an overview of the theoretical concepts in surface science. This second enlarged edition has been carefully revised and updated, a new chapter on surface magnetism is included, and novel developments in theoretical surface science are addressed.

60-GHz CMOS Phase-Locked Loops (Paperback, 2010 ed.): Hammad M Cheema, Reza Mahmoudi, Arthur H. M. van Roermund 60-GHz CMOS Phase-Locked Loops (Paperback, 2010 ed.)
Hammad M Cheema, Reza Mahmoudi, Arthur H. M. van Roermund
R2,957 Discovery Miles 29 570 Ships in 10 - 15 working days

Abstract This chapter lays the foundation for the work presented in latter chapters. The potential of 60 GHz frequency bands for high data rate wireless transfer is discussed and promising applications are enlisted. Furthermore, the challenges related to 60 GHz IC design are presented and the chapter concludes with an outline of the book. Keywords Wireless communication 60 GHz Millimeter wave integrated circuit design Phase-locked loop CMOS Communication technology has revolutionized our way of living over the last century. Since Marconi's transatlantic wireless experiment in 1901, there has been tremendous growth in wireless communication evolving from spark-gap telegraphy to today's mobile phones equipped with Internet access and multimedia capabilities. The omnipresence of wireless communication can be observed in widespread use of cellular telephony, short-range communication through wireless local area networks and personal area networks, wireless sensors and many others. The frequency spectrum from 1 to 6 GHz accommodates the vast majority of current wireless standards and applications. Coupled with the availability of low cost radio frequency (RF) components and mature integrated circuit (IC) techn- ogies, rapid expansion and implementation of these systems is witnessed. The downside of this expansion is the resulting scarcity of available bandwidth and allowable transmit powers. In addition, stringent limitations on spectrum and energy emissions have been enforced by regulatory bodies to avoid interference between different wireless systems.

Initial Results from the Fast Imaging Solar Spectrograph (FISS) (Hardcover, 2015 ed.): Jongchul Chae Initial Results from the Fast Imaging Solar Spectrograph (FISS) (Hardcover, 2015 ed.)
Jongchul Chae
R3,645 Discovery Miles 36 450 Ships in 10 - 15 working days

Describes the instruments and initial results of the Fast Imaging Solar Spectrograph (FISS) at the Big Bear Solar Observatory. This collection of papers describes the instrument and initial results obtained from the Fast Imaging Solar Spectrograph (FISS), one of the post-focus instruments of the 1.6 meter New Solar Telescope at the Big Bear Solar Observatory. The FISS primarily aims at investigating structures and dynamics of chromospheric features. This instrument is a dual-band Echelle spectrograph optimized for the simultaneous recording of the H I 656.3 nm band and the Ca II 854.2 nm band. The imaging is done with the fast raster scan realized by the linear motion of a two-mirror scanner, and its quality is determined by the performance of the adaptive optics of the telescope. These papers illustrate the capability of the early FISS observations in the study of chromospheric features. Since the imaging quality has been improved a lot with the advance of the adaptive optics, one can obtain much better data with the current FISS observations. This volume is aimed at graduate students and researchers working in the field of solar physics and space sciences. Originally published in Solar Physics, Vol. 288, Issue 1, 2013, and Vol. 289, Issue 11, 2014.

Spin Dynamics in Confined Magnetic Structures III (Paperback, 2006 ed.): Burkard Hillebrands, Andre Thiaville Spin Dynamics in Confined Magnetic Structures III (Paperback, 2006 ed.)
Burkard Hillebrands, Andre Thiaville
R5,780 Discovery Miles 57 800 Ships in 10 - 15 working days

The third volume of this book addresses central aspects of spin-dynamic phenomena on a tutorial level. This volume concentrates on new experimental techniques such as ferromagnetic-resonance-force microscopy and two-photon photoemission. There is a chapter devoted to the hot subject of spin-transfer torque. The comprehensive presentation makes this a timely and valuable resource for every researcher working in the field of magnetism.

Inside NAND Flash Memories (Paperback, 2010 ed.): Rino Micheloni, Luca Crippa, Alessia Marelli Inside NAND Flash Memories (Paperback, 2010 ed.)
Rino Micheloni, Luca Crippa, Alessia Marelli
R6,616 Discovery Miles 66 160 Ships in 10 - 15 working days

Digital photography, MP3, digital video, etc. make extensive use of NAND-based Flash cards as storage media. To realize how much NAND Flash memories pervade every aspect of our life, just imagine how our recent habits would change if the NAND memories suddenly disappeared. To take a picture it would be necessary to find a film (as well as a traditional camera...), disks or even magnetic tapes would be used to record a video or to listen a song, and a cellular phone would return to be a simple mean of communication rather than a multimedia console. The development of NAND Flash memories will not be set down on the mere evolution of personal entertainment systems since a new killer application can trigger a further success: the replacement of Hard Disk Drives (HDDs) with Solid State Drives (SSDs). SSD is made up by a microcontroller and several NANDs. As NAND is the technology driver for IC circuits, Flash designers and technologists have to deal with a lot of challenges. Therefore, SSD (system) developers must understand Flash technology in order to exploit its benefits and countermeasure its weaknesses. Inside NAND Flash Memories is a comprehensive guide of the NAND world: from circuits design (analog and digital) to Flash reliability (including radiation effects), from testing issues to high-performance (DDR) interface, from error correction codes to NAND applications like Flash cards and SSDs.

Advanced Computing in Electron Microscopy (Paperback, 2nd ed. 2010): Earl J. Kirkland Advanced Computing in Electron Microscopy (Paperback, 2nd ed. 2010)
Earl J. Kirkland
R3,213 Discovery Miles 32 130 Ships in 10 - 15 working days

Preface to Second Edition Several new topics have been added, some small errors have been corrected and some new references have been added in this edition. New topics include aberration corrected instruments, scanning confocal mode of operations, Bloch wave eigenvalue methods and parallel computing techniques. The ?rst edition - cluded a CD with computer programs, which is not included in this edition. - stead the associated programs will be available on an associated web site (currently people.ccmr.cornell.edu/~kirkland,but may move as time goes on). I wish to thank Mick Thomas for preparing the specimen used to record the image in Fig.5.26 and to thank Stephen P. Meisburger for suggesting an interesting biological specimen to use in Fig.7.24. Again, I apologize in advance for leaving out some undoubtedlyoutstanding r- erences. I also apologize for the as yet undiscovered errors that remain in the text. Earl J. Kirkland, December 2009 Preface to First Edition Image simulation has become a common tool in HREM (High Resolution El- tron Microscopy) in recent years. However, the literature on the subject is scattered among many different journals and conference proceedings that have occurred in the last two or three decades. It is dif?cult for beginners to get started in this ?eld.

Chiral Recognition in Separation Methods - Mechanisms and Applications (Paperback, 2010 ed.): Alain Berthod Chiral Recognition in Separation Methods - Mechanisms and Applications (Paperback, 2010 ed.)
Alain Berthod
R5,776 Discovery Miles 57 760 Ships in 10 - 15 working days

What drives a scientist to edit a book on a speci c scienti c subject such as chiral mechanisms in separation methods? Until December 2005, the journal Analytical Chemistry of the American Chemical Society (Washington, DC) had an A-page section that was dedicated to simple and clear presentations of the most recent te- niques or the state of the art in a particular eld or topic. The "A-page" section was prepared for a broad audience of chemists including industrial professionals, s- dents as well as academics looking for information outside their eld of expertise. 1 Daniel W. Armstrong, one of the editors of this journal and a twenty-year+ long friend, invited me to present my view on chiral recognition mechanisms in a simple and clear way in an "A-page" article. In 2006, the "A-page" section was maintained as the rst articles at the beginning of each rst bi-monthly issue but the pagination was no longer page distinguished from the regular research articles published by the journal. During the time between the invitation and the submission, the A-page section was integrated into the rest of the journal and the article appeared as (2006) Anal Chem (78):2093-2099.

Innovative Technological Materials - Structural Properties by Neutron Scattering, Synchrotron Radiation and Modeling... Innovative Technological Materials - Structural Properties by Neutron Scattering, Synchrotron Radiation and Modeling (Paperback, 2010 ed.)
Jacek J. Skrzypek, Franco Rustichelli
R2,960 Discovery Miles 29 600 Ships in 10 - 15 working days

arranged. Among them the following types are met: nanotubes, nanop- ticles, nanopowders, nano?bers, nanowires, nanocomposites, etc. * At the microscale - Microcomposites, such as metal matrix composites (MMCs), ceramic matrix composites (CMCs), alloys or superalloys, s- tered powders, ceramic materials, magnetorheological ?uids (MRFs), etc. * At the macroscale - Macrocomposites, such as functionally graded ma- rials (FGMs), thin layers or ?lms, thermal or oxidation or wear resistant coatings, multilayered structures, long ?ber composites, etc. At each level of analysis a response of the material to any physical excitation may be observed, measured and analyzed. In the sense of innovation of a material, the changes or new ideas can be introduced on the same scale of control (say, atomic or nano) in order to achieve fundamentally new behavior on the other scale of observation (say, micro or macro). For instance, by replacing some similar atoms in the metal crystal str- ture (e. g. Ti-Ti or Al-Al), by unlike atoms in the crystal (e. g. Ti-Al), wi- out the lattice symmetry of the original material changing, new improved properties and characteristics may be observed in intermetallics at the - cro or macroscale (higher speci?c strength, better creep resistance at elevated temperatures, better corrosion resistance, to mention only some properties observed at the macroscale). Similarly, changing material characteristics at the nanoscale, enables creation of completely new material functionality at micro or macroscales (e. g.

Strongly Correlated Systems - Experimental Techniques (Hardcover, 2015 ed.): Adolfo Avella, Ferdinando Mancini Strongly Correlated Systems - Experimental Techniques (Hardcover, 2015 ed.)
Adolfo Avella, Ferdinando Mancini
R4,191 Discovery Miles 41 910 Ships in 10 - 15 working days

The continuous evolution and development of experimental techniques is at the basis of any fundamental achievement in modern physics. Strongly correlated systems (SCS), more than any other, need to be investigated through the greatest variety of experimental techniques in order to unveil and crosscheck the numerous and puzzling anomalous behaviors characterizing them. The study of SCS fostered the improvement of many old experimental techniques, but also the advent of many new ones just invented in order to analyze the complex behaviors of these systems. Many novel materials, with functional properties emerging from macroscopic quantum behaviors at the frontier of modern research in physics, chemistry and materials science, belong to this class of systems. The volume presents a representative collection of the modern experimental techniques specifically tailored for the analysis of strongly correlated systems. Any technique is presented in great detail by its own inventor or by one of the world-wide recognized main contributors. The exposition has a clear pedagogical cut and fully reports on the most relevant case study where the specific technique showed to be very successful in describing and enlightening the puzzling physics of a particular strongly correlated system. The book is intended for advanced graduate students and post-docs in the field as textbook and/or main reference, but also for any other researcher in the field who appreciates consulting a single, but comprehensive, source or wishes to get acquainted, in a as painless as possible way, with the working details of a specific technique.

Device Architecture and Materials for Organic Light-Emitting Devices - Targeting High Current Densities and Control of the... Device Architecture and Materials for Organic Light-Emitting Devices - Targeting High Current Densities and Control of the Triplet Concentration (Paperback, 2011 ed.)
Sarah Schols
R2,957 Discovery Miles 29 570 Ships in 10 - 15 working days

Device Architecture and Materials for Organic Light-Emitting Devices focuses on the design of new device and material concepts for organic light-emitting devices, thereby targeting high current densities and an improved control of the triplet concentration. A new light-emitting device architecture, the OLED with field-effect electron transport, is demonstrated. This device is a hybrid between a diode and a field-effect transistor. Compared to conventional OLEDs, the metallic cathode is displaced by one to several micrometers from the light-emitting zone, reducing optical absorption losses. The electrons injected by the cathode accumulate at an organic heterojunction and are transported to the light-emission zone by field-effect. High mobilities for charge carriers are achieved in this way, enabling a high current density and a reduced number of charge carriers in the device. Pulsed excitation experiments show that pulses down to 1 s can be applied to this structure without affecting the light intensity, suggesting that pulsed excitation might be useful to reduce the accumulation of triplets in the device. The combination of all these properties makes the OLED with field-effect electron transport particularly interesting for waveguide devices and future electrically pumped lasers. In addition, triplet-emitter doped organic materials, as well as the use of triplet scavengers in conjugated polymers are investigated.

Supramolecular Structure and Function 10 (Paperback, 2011 ed.): Jasminka Brnjas-Kraljevic, Greta Pifat-Mrzljak Supramolecular Structure and Function 10 (Paperback, 2011 ed.)
Jasminka Brnjas-Kraljevic, Greta Pifat-Mrzljak
R4,444 Discovery Miles 44 440 Ships in 10 - 15 working days

The book is based on lectures presented on the International Summer School on Biophysics held in Croatia in September 2009. The advantage of the School is that it provides advanced training in very broad scope of areas related to biophysics contrary to other similar schools or workshops that are centered mainly on one topic or technique. In this volume, tenth in the row, the papers in the field of biophysics are presented. The topics are biological phenomena from single protein to macromolecular aggregations structure by using variant physical methods (NMR, EPR, FTIR, Mass Spectrometry, etc.). The interrelationship of supramolecular structures and their functions is enlightened by applications of principals of these physical methods in the biophysical and molecular biology context.

Theory of Bilayer Graphene Spectroscopy (Paperback, 2013 ed.): Marcin Mucha-Kruczynski Theory of Bilayer Graphene Spectroscopy (Paperback, 2013 ed.)
Marcin Mucha-Kruczynski
R3,198 Discovery Miles 31 980 Ships in 10 - 15 working days

This thesis presents the theory of three key elements of optical spectroscopy of the electronic excitations in bilayer graphene: angle-resolved photoemission spectroscopy (ARPES), visible range Raman spectroscopy, and far-infrared (FIR) magneto-spectroscopy. Bilayer graphene (BLG) is an atomic two-dimensional crystal consisting of two honeycomb monolayers of carbon, arranged according to Bernal stacking. The unperturbed BLG has a unique band structure, which features chiral states of electrons with a characteristic Berry phase of 2$\pi$, and it has versatile properties which can be controlled by an externally applied transverse electric field and strain. It is shown in this work how ARPES of BLG can be used to obtain direct information about the chirality of electron states in the crystal. The author goes on to describe the influence of the interlayer asymmetry, which opens a gap in BLG, on ARPES and on FIR spectra in a strong magnetic field. Finally, he presents a comprehensive theory of inelastic Raman scattering resulting in the electron-hole excitations in bilayer graphene, at zero and quantizing magnetic fields. This predicts their polarization properties and peculiar selection rules in terms of the inter-Landau-level transitions.

Radiometry in Modern Scientific Experiments (Paperback, 2011 ed.): Pravilov Anatoly Radiometry in Modern Scientific Experiments (Paperback, 2011 ed.)
Pravilov Anatoly
R2,957 Discovery Miles 29 570 Ships in 10 - 15 working days

The reader is provided with information about methods of calibration of light sources and photodetectors as well as responsiveness of spectral instruments ranging from near infrared to vacuum UV spectral, 1200 - 100 nm, and radiation intensities of up to several quanta per second in absolute and arbitrary units. The author describes for the first time original methods of measurements they created and draws upon over 40 years of experience in working with light sources and detectors to provide accurate and precise measurements. This book is the first to cover these aspects of radiometry and is divided into seven chapters that examine information about terminology, units, light sources and detectors, methods, including author's original ones, of absolute calibration of detectors, spectral instruments responsiveness, absolute measurements of radiation intensity of photoprocesses, and original methods of their study. Of interest to researchers measuring; luminescence spectra, light intensities from IR to vacuum UV, spectral range in wide-light intensity ranges, calibrate light sources and detectors, absolute or relative quantum yields of photoprocess determination.

Nonlinear Hamiltonian Mechanics Applied to Molecular Dynamics - Theory and Computational Methods for Understanding Molecular... Nonlinear Hamiltonian Mechanics Applied to Molecular Dynamics - Theory and Computational Methods for Understanding Molecular Spectroscopy and Chemical Reactions (Paperback, 2014 ed.)
Stavros C. Farantos
R2,100 Discovery Miles 21 000 Ships in 10 - 15 working days

This brief presents numerical methods for describing and calculating invariant phase space structures, as well as solving the classical and quantum equations of motion for polyatomic molecules. Examples covered include simple model systems to realistic cases of molecules spectroscopically studied. Vibrationally excited and reacting molecules are nonlinear dynamical systems, and thus, nonlinear mechanics is the proper theory to elucidate molecular dynamics by investigating invariant structures in phase space. Intramolecular energy transfer, and the breaking and forming of a chemical bond have now found a rigorous explanation by studying phase space structures.

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