Studies in Luminescence

Author: Edward L. Nichols,Ernest Merritt

Publisher: CreateSpace

ISBN: 9781500620134

Category: Science

Page: 234

View: 8871

DOWNLOAD NOW »
From the PREFACE: THE series of investigations described in this memoir was begun in 1903. The authors believed that by the use of quantitative methods and particularly by the application of the spectrophotometer to the study of the spectra of fluorescent and phosphorescent substances, something of definite value might be added to the existing information concerning luminescence. Spectroscopy, whether visual or photographic, is a method of high precision where applied to line spectra, but in the case of the broad bands of the spectra of fluorescent solids and liquids it affords but little information beyond the approximate width and general location of the bands. The spectrophotometer, on the other hand, enables the observer to determine the distribution of intensities throughout the emission bands and the coefficients of absorption for the various wave-lengths of the corresponding absorption bands. From the curves expressing the results of such measurements, moreover, it is possible to locate with considerable accuracy the crests of the bands. One may thus attain some detailed knowledge of the laws of the radiation of luminescence, compare luminescence with the radiation due to temperature, and obtain a basis for theoretical discussion. A number of important portions of the work described in this volume have been carried out at our suggestion by Doctors Frances G. Wick, C. A. Pierce, Percy Hodge, and C. W. Waggoner, and by Messrs. H. E. Howe and Carl Zeller. To these investigators and also to Prof. W. R. Orndorff, who has repeatedly aided us by undertaking the preparation of fluorescent compounds and by suggestions concerning the chemical aspects of the problem, we desire to express our indebtedness. The recent exhaustive, thorough, and discriminating review of the very large literature relating to luminescence published by Professor Kayser (H. Kayser, Handbuch der Spektroskopie, Bd. iv, Kap. v and vi) in his Handbook of Spectroscopy, makes any extended bibliographic or historic treatment here unnecessary and we have therefore given only such references to previous researches as bear directly upon the subjects under consideration. The subject-matter contained in the several chapters appeared from time to time, as each portion of the work reached completion, in a series of papers hi the Physical Review. In gathering this material together in a single treatise we have recast and rearranged it, but have preserved the original form of presentation in so far as it was found to be consistent with our views after the completion of the work. Grants which were received from the Carnegie Institution of Washington in 1905, 1909, and 1910 have greatly facilitated the prosecution of the experiments described in this memoir and of others now in progress and have furthered the preparation for investigations which it is proposed to undertake in the near future.

Optical Studies in Liquids and Solids

Author: D. V. Skobel tsyn

Publisher: Springer Science & Business Media

ISBN: 1468487248

Category: Science

Page: 266

View: 2232

DOWNLOAD NOW »
The study of the vibrations of polyatomic molecules has recently turned into one of the most widespread and powerful methods of studying molecular structure. These vibrations ap pear directly in the infrared absorption spectra and Raman spectra of gases, liquids, and solids. A measurement of the number of bands in addition to their positions (frequencies or wavelengths) offers the possibility of obtaining a great deal of important information regarding the geometric and mechanical properties of the molecules, the types of chemical bonds, and so forth. It is now quite difficult to list the vast number of specific problems solved by measuring vibrational fre quencies. As a result of the successful development of research methods and the widespread applica tion of vibrational spectra in analyzing the structures of molecules and the constitution of ma terials, it now becomes necessary to develop the theory of molecular vibrations further. Existing theory, of course, is based on the assumption of the harmonicity of molecular vi brations, which, strictly speaking, is not justified experimentally. The anharmonicity of the molecular vibrations has therefore to be taken into account by introducing appropriate approxi mations. Thus, in carrying out calculations on the vibrations of polyatomic molecules, one uses the force constants calculated from the observed frequency values. However, as a result of the anharmonicity of the vibrations, the values of the observed frequencies differ from the harmonic values, and the force constants used therefore differ from the true ones, i. e.

Micro-Raman Spectroscopy and Luminescence Studies in the Earth and Planetary Sciences

Proceedings of the International Conference Spectroscopy 2009

Author: Arnold Gucsik

Publisher: American Inst. of Physics

ISBN: N.A

Category: Science

Page: 250

View: 2637

DOWNLOAD NOW »
This volume provides an overview of luminescence and micro-Raman properties, respectively, of the earth and planetary materials. It is unique in that it is the first proceedings volume of its kind presenting new important data on micro-Raman and luminescence spectroscopy and microscopy on samples of impactites, meteorites, shock recovery experiences, minerals as well as sediments. Each chapter is written by a well-known specialist and covers new fields such as shock-induced microdeformations in minerals, astrobiology and the cosmochemistry of meteorites, in-situ planetary explorations.

Luminescence and Its Applications 97

Proceedings of the National Conference on Luminescence and Its Applications 97 (NCLA-97), October 13 - 15, 1997

Author: S. Bhushan

Publisher: Allied Publishers

ISBN: 9788170237082

Category:

Page: 426

View: 9233

DOWNLOAD NOW »

Studies in Thermo-luminescence

Variations in the Decay of Phosphorescence in Sidot Blende and in Balmain's Paint Produced by Heating ...

Author: Clarence Albert Pierce

Publisher: N.A

ISBN: N.A

Category: Phosphorescence

Page: 469

View: 2523

DOWNLOAD NOW »

Luminescence Techniques in Chemical and Biochemical Analysis

Author: Willy R. G. Baeyens

Publisher: CRC Press

ISBN: 9780824783693

Category: Medical

Page: 664

View: 7025

DOWNLOAD NOW »
Provides information on modern luminescence techniques, beginning with a general introduction to luminescence spectroscopy. Divided into two basic sections, the first dealing with fluorescence and the latter part on chemiluminescence. Topics include immunoassays, the use of chemiluminescence in flow

Defects and Surface-Induced Effects in Advanced Perovskites

Author: Gunnar Borstel,Andris Krumins,Donats Millers

Publisher: Springer Science & Business Media

ISBN: 9780792362166

Category: Science

Page: 492

View: 774

DOWNLOAD NOW »
Complex oxide materials, especially the ABO3-type perovskite materials, have been attracting growing scientific interest due to their unique electro-optical properties, leading to photorefractive effects that form the basis for such devices as holographic storage, optical data processing and phase conjugation. The optical and mechanical properties of non-metals are strongly affected by the defects and impurities that are unavoidable in any real material. Nanoscopically sized surface effects play an important role, especially in multi-layered ABO3 structures, which are good candidates for high capacity memory cells. The 51 papers presented here report the latest developments and new results and will greatly stimulate progress in high-tech technologies using perovskite materials.

Emerging Synthesis Techniques for Luminescent Materials

Author: Tiwari, Ratnesh,Dubey, Vikas,Dhoble, Sanjay J.

Publisher: IGI Global

ISBN: 1522551719

Category: Technology & Engineering

Page: 505

View: 7699

DOWNLOAD NOW »
The design and study of materials is a pivotal component to new discoveries in the various fields of science and technology. By better understanding the components and structures of materials, researchers can increase their applications across different industries. Emerging Synthesis Techniques for Luminescent Materials is a critical scholarly resource that explores the important field of emerging synthesis techniques of luminescent materials and its practical applications. Featuring coverage on a broad range of topics such as electroluminescence, glow curve analysis, and upconversion, this book is geared towards engineers, academics, researchers, students, professionals, and practitioners seeking current research on photoluminescence and the study of rare earth doped phosphors.

Handbook of Polymers in Electronics

Author: Bansi D. Malhotra

Publisher: iSmithers Rapra Publishing

ISBN: 9781859572863

Category: Electronics

Page: 474

View: 8084

DOWNLOAD NOW »
The Handbook of Polymers in Electronics has been designed to discuss the novel ways in which polymers can be used in the rapidly growing electronics industry. It provides discussion of the preparation and characterisation of suitable polymeric materials and their current and potential applications coupled with the fundamentals of electrical, optical and photophysical properties. It will thus serve the needs of those already active in the electronics field as well as new entrants to the industry.

Lasers in Polymer Science and Technology

Applications

Author: Jan F. Rabek,Jean-Pierre Fouassier

Publisher: CRC Press

ISBN: 9780849348440

Category: Science

Page: 328

View: 5884

DOWNLOAD NOW »
The purpose of this 4-volume book is to examine some of the applications of lasers in polymer science and technology. Now available for the first time, up-to-date information on this fascinating subject is compiled and presented in compact form. This book focuses on current research and developments in the application of lasers in polymer and biopolymer chemistry. It includes experimental and theoretical details, apparatus, techniques, and applications. This book is a useful source for researchers, students, polymer chemists, and physicists involved in this astonishing field of high technology.

Who’s Who in Fluorescence 2003

Author: Chris D. Geddes,Joseph R. Lakowicz

Publisher: Springer Science & Business Media

ISBN: 9780306476891

Category: Biography & Autobiography

Page: 175

View: 9178

DOWNLOAD NOW »
The Journal of Fluorescence's first Who's Who directory is to publish the names, contact details, specialty keywords and a brief description of scientists employing fluorescence methodology and instrumentation in their working lives. In addition the directory will provide company contact details with a brief list of fluorescence related products. Nothing like this has been published before for the Fluorescence field.

The Collector’s Book of Fluorescent Minerals

Author: Manuel A. Robbins

Publisher: Springer Science & Business Media

ISBN: 1475747926

Category: Science

Page: 289

View: 1582

DOWNLOAD NOW »
Over the last several decades, the number of people who are actively involved in the hobby or science of mineral collecting has grown at an increasing pace. In response to the growing demand for informa tion which this large and active group has created, a number of books have been published dealing with mineralogy. As a result, the reader now has a choice among mineral locality guides, field handbooks, photo collections, or books dedicated to the systematic description of minerals. However, as interest in mineralogy has grown, as collectors have become increasingly knowledgeable and aware of mineralogy in its many facets, the need for more specialized information has also grown. Nowhere is this need greater than in the subject of the fluorescence of minerals. The number of collectors who now main tain a fluorescent collection is substantial, interest is constantly increasing, and manufacturers have recently responded by the intro duction of new ultraviolet equipment with major improvements in utility and performance. Yet when the collector searches for any information on this subject, little will be found. He or she will seek in vain for the answers to questions which present themselves as in terest in fluorescent minerals grows and matures. Which minerals fluoresce? Where are fluorescent minerals found? What makes a mineral fluoresce? Why does ultraviolet light produce fluorescence? What is an activator, and how does it contribute to fluorescence? On these matters, the available mineralogy books are largely silent.

Comprehensive Nanoscience and Technology

Author: N.A

Publisher: Academic Press

ISBN: 9780123743961

Category: Science

Page: 2774

View: 3465

DOWNLOAD NOW »
From the Introduction: Nanotechnology and its underpinning sciences are progressing with unprecedented rapidity. With technical advances in a variety of nanoscale fabrication and manipulation technologies, the whole topical area is maturing into a vibrant field that is generating new scientific research and a burgeoning range of commercial applications, with an annual market already at the trillion dollar threshold. The means of fabricating and controlling matter on the nanoscale afford striking and unprecedented opportunities to exploit a variety of exotic phenomena such as quantum, nanophotonic and nanoelectromechanical effects. Moreover, researchers are elucidating new perspectives on the electronic and optical properties of matter because of the way that nanoscale materials bridge the disparate theories describing molecules and bulk matter. Surface phenomena also gain a greatly increased significance; even the well-known link between chemical reactivity and surface-to-volume ratio becomes a major determinant of physical properties, when it operates over nanoscale dimensions. Against this background, this comprehensive work is designed to address the need for a dynamic, authoritative and readily accessible source of information, capturing the full breadth of the subject. Its six volumes, covering a broad spectrum of disciplines including material sciences, chemistry, physics and life sciences, have been written and edited by an outstanding team of international experts. Addressing an extensive, cross-disciplinary audience, each chapter aims to cover key developments in a scholarly, readable and critical style, providing an indispensible first point of entry to the literature for scientists and technologists from interdisciplinary fields. The work focuses on the major classes of nanomaterials in terms of their synthesis, structure and applications, reviewing nanomaterials and their respective technologies in well-structured and comprehensive articles with extensive cross-references. It has been a constant surprise and delight to have found, amongst the rapidly escalating number who work in nanoscience and technology, so many highly esteemed authors willing to contribute. Sharing our anticipation of a major addition to the literature, they have also captured the excitement of the field itself in each carefully crafted chapter. Along with our painstaking and meticulous volume editors, full credit for the success of this enterprise must go to these individuals, together with our thanks for (largely) adhering to the given deadlines. Lastly, we record our sincere thanks and appreciation for the skills and professionalism of the numerous Elsevier staff who have been involved in this project, notably Fiona Geraghty, Megan Palmer and Greg Harris, and especially Donna De Weerd-Wilson who has steered it through from its inception. We have greatly enjoyed working with them all, as we have with each other.

Handbook of Sea-Level Research

Author: Ian Shennan,Antony J. Long,Benjamin P. Horton

Publisher: John Wiley & Sons

ISBN: 1118452585

Category: Science

Page: 600

View: 1110

DOWNLOAD NOW »
"This book will cover all aspects of modern sea-level studies, with a focus on the most robust scientific approaches and techniques"--

Hertha Sponer: a Woman’S Life as a Physicist in the 20Th Century ''So You Won't Forget Me''

Author: Marie-Ann Maushart

Publisher: Xlibris Corporation

ISBN: 1465338063

Category: Biography & Autobiography

Page: 288

View: 7642

DOWNLOAD NOW »
Just three women qualified for a professorship in physics in Germany before the Second World War. All three began their careers with great promise; all three had to leave Hitlers Germany, among them Hertha Sponer. An ambitious girl, she had to struggle to achieve the education she craved, culminating in a Ph.D. at the University of Gttingen. There followed an apprenticeship in Berlin, and work under the aegis of James Franck, around the time he received the Nobel Prize. Their academic world was shattered by the Nazis. Sponer reluctantly embarked on a new life in North Carolina. She succeeded as Professor of Physics at Duke University. She became a recognized authority on the electronic spectra of aromatic molecules (benzene and derivatives). Late in life, she became the second wife of James Franck.

Molecular Materials

Author: Duncan W. Bruce,Dermot O'Hare,Richard I. Walton

Publisher: John Wiley & Sons

ISBN: 9781119972952

Category: Technology & Engineering

Page: 374

View: 9291

DOWNLOAD NOW »
“... the book does an excellent job of putting together several different classes of materials. Many common points emerge, and the book may facilitate the development of hybrids in which the qualities of the “parents” are enhanced.” –Angew. Chem. Int. Ed. 2011 With applications in optoelectronics and photonics, quantum information processing, nanotechnology and data storage, molecular materials enrich our daily lives in countless ways. These materials have properties that depend on their exact structure, the degree of order in the way the molecules are aligned and their crystalline nature. Small, delicate changes in molecular structure can totally alter the properties of the material in bulk. There has been increasing emphasis on functional metal complexes that demonstrate a wide range of physical phenomena. Molecular Materials represents the diversity of the area, encapsulating magnetic, optical and electrical properties, with chapters on: Metal-Based Quadratic Nonlinear Optical Materials Physical Properties of Metallomesogens Molecular Magnetic Materials Molecular Inorganic Conductors and Superconductors Molecular Nanomagnets Structured to include a clear introduction, a discussion of the basic concepts and up-to-date coverage of key aspects, each chapter provides a detailed review which conveys the excitement of work in that field. Additional volumes in the Inorganic Materials Series: Low-Dimensional Solids | Molecular Materials | Porous Materials | Energy Materials

Sulfoxides—Advances in Research and Application: 2012 Edition

ScholarlyBrief

Author: N.A

Publisher: ScholarlyEditions

ISBN: 1481609254

Category: Science

Page: 66

View: 7821

DOWNLOAD NOW »
Sulfoxides—Advances in Research and Application: 2012 Edition is a ScholarlyBrief™ that delivers timely, authoritative, comprehensive, and specialized information about Sulfoxides in a concise format. The editors have built Sulfoxides—Advances in Research and Application: 2012 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Sulfoxides in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Sulfoxides—Advances in Research and Application: 2012 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Advances in Molecular Nanotechnology Research and Application: 2012 Edition

Author: N.A

Publisher: ScholarlyEditions

ISBN: 1464990751

Category: Technology & Engineering

Page: 1622

View: 7561

DOWNLOAD NOW »
Advances in Molecular Nanotechnology Research and Application / 2012 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Molecular Nanotechnology. The editors have built Advances in Molecular Nanotechnology Research and Application / 2012 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Molecular Nanotechnology in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Advances in Molecular Nanotechnology Research and Application / 2012 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.