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Laser Based Approaches To Increase Fiber Optic Based Selectivity
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Book Synopsis Laser Based Approaches to Increase Fiber-Optic-Based Selectivity by : TA. Betts
Download or read book Laser Based Approaches to Increase Fiber-Optic-Based Selectivity written by TA. Betts and published by . This book was released on 1990 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last several decades the communications industry has developed small, high-light transmitting fiber-optic materials. Because of their inherently non-perturbing nature fiber optics have found wide spread use in many diverse areas of analytical spectroscopy. Of all the spectroscopic techniques, fiber-optic-based fluorescence has probably enjoyed the greatest popularity. Unfortunately, while successful analyses have been achieved via fiber-optic probes, only a fraction (that is, spectral information) of the total information content from the fluorescence process has been utilized. In this paper, recent results from our laboratory are presented for the successful implementation of the remaining dynamic and steady-state fluorimetric measurements in conjunction with fiber-optic sensing.
Book Synopsis Laser Techniques in Luminescence Spectroscopy by : Tuan Vo-Dinh
Download or read book Laser Techniques in Luminescence Spectroscopy written by Tuan Vo-Dinh and published by ASTM International. This book was released on 1990 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluorescence Spectroscopy written by and published by Academic Press. This book was released on 2011-09-06 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluorescence spectroscopy is a type of electromagnetic spectroscopy, using a beam of light, which analyzes fluorescence from a sample. Given its extremely high sensitivity and selectivity, it is an important investigational tool in many areas including material sciences, analytical sciences, and across a broad range of chemical, biochemical and medical research. It has become an essential investigational technique allowing detailed, real-time observation of the structure and dynamics of intact biological systems. The pharmaceutical industry uses it heavily and it has become a dominating technique in biochemistry and molecular genetics. - Keeps MIE buyers and online subscribers up-to-date with the latest research with this highly used technique - Provides tried and tested techniques which eliminate searching through many different sources
Download or read book Fiber Lasers written by Liang Dong and published by CRC Press. This book was released on 2016-09-19 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fiber laser, with its humble beginning in the late 1980s, has undergone tremendous development in the past decade or so, transforming itself from a research curiosity to a major force in modern manufacturing. Today, it is revolutionizing our economy by fundamentally changing the way we mark, machine, and process materials on an industrial scale. The recent development of high-power fiber lasers is also fundamentally shaping a wide range of other areas from physical sciences and medicine to geology and space exploration. In the past few years, the tactical deployment of direct energy weapons based on fiber lasers has become a reality. The development of fiber lasers is rooted in a number of technical areas including optical materials, optical waveguide design, nonlinear optics, optical fiber fabrication, and optical characterization, in addition to optical fiber components, and fiber laser design and architecture. No comprehensive in-depth coverage of such diverse topical areas has appeared in a single book. Many important developments have taken place in the past decade in both academia and industry. This book comprehensively covers the basics, technology and applications of fiber lasers including up-to-date developments in both academia and industry and is aimed to serve as both an introduction and research aid for graduate students, engineers, and scientists who are new to this field and also for veterans in the field
Book Synopsis Development of Optical Fiber-based Sensing Devices Using Laser Microfabrication Methods by : Seyed Hamidreza Alemohammad
Download or read book Development of Optical Fiber-based Sensing Devices Using Laser Microfabrication Methods written by Seyed Hamidreza Alemohammad and published by . This book was released on 2010 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this thesis is on the development of sensing devices based on optical fiber sensors, specifically optical Fiber Bragg Gratings (FBG), using laser microfabrication methods. FBG is a type of optical fibers whose spectral response is affected by applied strain and temperature. As a result, it can be calibrated for the measurement of physical parameters manifesting themselves in the changes of strain or temperature. The unique features of optical fiber sensors such as FBGs have encouraged the widespread use of the sensor and the development of optical fiber-based sensing devices for structural measurements, failure diagnostics, thermal measurements, pressure monitoring, etc. These features include light weight, small size, long-term durability, robustness to electromagnetic disturbances, and resistance to corrosion. Despite the encouraging features, there are some limitations and challenges associated with FBGs and their applications. One of the challenges associated with FBGs is the coupling of the effects of strain and temperature in the optical response of the sensors which affects the reliability and accuracy of the measurements. Another limitation of FBGs is insensitivity to the index of refraction of their surrounding medium. In liquids, the index of refraction is a function of concentration. Making FBGs sensitive to the index of refraction and keeping their thermal sensitivity intact enable optical sensors with the capability of the simultaneous measurement of concentration and temperature in liquids. Considering the unique features of FBGs, embedding of the sensors in metal parts for in-situ load monitoring is a cutting-edge research topic. Several industries such as machining tools, aerospace, and automotive industries can benefit from this technology. The metal embedding process is a challenging task, as the thermal decay of UV-written gratings can starts at a temperature of ~200 oC and accelerates at higher temperatures. As a result, the embedding process needs to be performed at low temperatures. The objective of the current thesis is to move forward the existing research front in the area of optical fiber sensors by finding effective solutions to the aforementioned limitations. The approaches consist of modeling, design, and fabrication of new FBG-based sensing devices. State-of-the-art laser microfabrication methods are proposed and implemented for the fabrication of the devices. Two approaches are adopted for the development of the FBG-based sensing devices: the additive method and the subtractive method. In both methods, laser direct microfabrication techniques are utilized. The additive method deals with the deposition of on-fiber metal thin films, and the subtractive method is based on the selective removal of materials from the periphery of optical fibers. To design the sensing devices and analyze the performance of the sensors, an opto-mechanical model of FBGs for thermal and structural monitoring is developed. The model is derived from the photo-elastic and thermo-optic properties of optical fibers. The developed model can be applied to predict the optical responses of a FBG exposed to structural loads and temperature variations with uniform and non-uniform distributions. The model is also extended to obtain optical responses of superstructure FBGs in which a secondary periodicity is induced in the index of refraction along the optical fiber. To address the temperature-strain coupling in FBGs, Superstructure FBGs (SFBG) with on-fiber metal thin films are designed and fabricated. It is shown that SFBGs have the capability of measuring strain and temperature simultaneously. The design of the sensor with on-fiber thin films is carried out by using the developed opto-mechanical model of FBGs. The performance of the sensor in concurrent measurement of strain and temperature is investigated by using a customized test rig. A laser-based Direct Write (DW) method, called Laser-Assisted Maskless Microdeposition (LAMM), is implemented to selectively deposit silver thin films on optical fibers and fabricate the superstructure FBGs. To attain thin films with premium quality, a characterization scheme is designed to study the geometrical, mechanical, and microstructural properties of the thin films in terms of the LAMM process parameters. A FBG, capable of measuring concentration and temperature of liquids is developed, and its performance is tested. Femtosecond laser micromachining is successfully implemented as a subtractive method for the sensor fabrication. For this purpose, periodic micro-grooves are inscribed in the cladding of regular FBGs so as to increase their sensitivity to the concentration of their surrounding liquid while keeping their thermal sensitivity intact. This type of sensors has the potential for applications in biomedical research, in which the in-situ measurement of the properties of biological analytes is required. Another accomplishment of this thesis is the development of FBG sensors embedded in metal parts for structural health monitoring using low temperature embedding processes. In this regard, the opto-mechanical model is extended to predict the optical response of the embedded FBGs. The embedding process involves low temperature casting, on-fiber thin film deposition, and electroplating methods. The performance of the embedded sensors is evaluated in structural loading and thermal cycling.
Book Synopsis Enabling Biomaterials for New Biomedical Technologies and Clinical Therapies by : Hasan Uludag
Download or read book Enabling Biomaterials for New Biomedical Technologies and Clinical Therapies written by Hasan Uludag and published by Frontiers Media SA. This book was released on 2020-07-14 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Novel Optical Instrumentation for Increased Selectivity in Molecular Spectroscopy by : Mary Katherine Carroll Mahony
Download or read book Novel Optical Instrumentation for Increased Selectivity in Molecular Spectroscopy written by Mary Katherine Carroll Mahony and published by . This book was released on 1991 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser-based Mid-infrared Sources and Applications by : Konstantin L. Vodopyanov
Download or read book Laser-based Mid-infrared Sources and Applications written by Konstantin L. Vodopyanov and published by John Wiley & Sons. This book was released on 2020-06-25 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important guide to the major techniques for generating coherent light in the mid-infrared region of the spectrum Laser-based Mid-infrared Sources and Applications gives a comprehensive overview of the existing methods for generating coherent light in the important yet difficult-to-reach mid-infrared region of the spectrum (2–20 μm) and their applications. The book describes major approaches for mid-infrared light generation including ion-doped solid-state lasers, fiber lasers, semiconductor lasers, and laser sources based on nonlinear optical frequency conversion, and reviews a range of applications: spectral recognition of molecules and trace gas sensing, biomedical and military applications, high-field physics and attoscience, and others. Every chapter starts with the fundamentals for a given technique that enables self-directed study, while extensive references help conduct deeper research. Laser-based Mid-infrared Sources and Applications provides up-to-date information on the state-of the art mid-infrared sources, discusses in detail the advancements made over the last two decades such as microresonators and interband cascade lasers, and explores novel approaches that are currently subjects of intense research such as supercontinuum and frequency combs generation. This important book: • Explains the fundamental principles and major techniques for coherent mid-infrared light generation • Discusses recent advancements and current cutting-edge research in the field • Highlights important biomedical, environmental, and military applications Written for researchers, academics, students, and engineers from different disciplines, the book helps navigate the rapidly expanding field of mid-infrared laser-based technologies.
Book Synopsis Innovations in Additive Manufacturing by : M. Adam Khan
Download or read book Innovations in Additive Manufacturing written by M. Adam Khan and published by Springer Nature. This book was released on 2022-01-31 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the history, fundamentals, process development, applications, post-processing, and experimental results from additive manufacturing. The chapters cover surface treatments, modification, advancements in heat treatment, mechanical hardening and its effect on the material properties. This book also presents content on simulation, modeling, and optimization of materials processing and surface engineering techniques.
Download or read book Fiber Optic Sensors written by Eric Udd and published by John Wiley & Sons. This book was released on 2024-03-28 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: FIBER OPTIC SENSORS Discover the latest in fiber optic sensors and their applications in this new edition Fiber-optic sensors are a powerful class of sensor that uses high-bandwidth optical fibers to convey a large amount of measured information through a single fiber. The advantages of such a mode of measurement are clear: they are intrinsically safe in explosive environments (no sparks), lightweight, compact, robust, and potentially inexpensive. As a result, their uses are manifold for a wide range of physical and chemical phenomena including temperature, strain, pressure, acoustic fields, position, velocity, rotation, acceleration, electrical current, liquid level, biochemical composition, and chemical concentration. Fiber Optic Sensors introduces and familiarizes the reader with a broad range of fiber optic sensor techniques and applications. The latest edition of this popular text builds upon the sound introductions to the fundamentals of the topic provided by earlier editions by introducing the latest technologies that have been developed in recent years. Gathering the latest research and publications on the subject in one place, the book provides a comprehensive look at fiber optic sensors with an eye to what’s new in the field. Readers of Fiber Optic Sensors’ third edition will also find: An exploration of the technology within new applications in areas such as aerospace, defense, oil and gas, medical, electric power, manufacturing, environmental, and robotics Updated chapters on the emergency of interferometric sensors, distributed sensing, and critical components A new and fully-updated comprehensive index Fiber Optic Sensors is a useful reference for engineers, scientists, technical managers, as well as advanced undergraduate and graduate students.
Book Synopsis Biosensors for Direct Monitoring of Environmental Pollutants in Field by : D.P. Nikolelis
Download or read book Biosensors for Direct Monitoring of Environmental Pollutants in Field written by D.P. Nikolelis and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biosensors offer clear and distinct advantages over standard analytical methods for the direct monitoring of environmental pollutants in the field, such as real-time detection with minimum sample preparation and handling. The present book highlights recent advantages that will be of great value to a range of scientists, researchers and students dealing with analytical and environmental chemistry and biosensor technology. It presents recent trends in analytical methodology for the determination of indoor and outdoor pollutants, advances in DNA, biological and recognition-based sensors, examples of biosensors for use in field and water analysis, biosensors based on non-aqueous systems, and recent advances in the miniaturisation and micromachining of biosensors.
Book Synopsis Metal Additive Manufacturing by : Dyuti Sarker
Download or read book Metal Additive Manufacturing written by Dyuti Sarker and published by John Wiley & Sons. This book was released on 2021-10-26 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: METAL ADDITIVE MANUFACTURING A comprehensive review of additive manufacturing processes for metallic structures Additive Manufacturing (AM)—also commonly referred to as 3D printing—builds three-dimensional objects by adding materials layer by layer. Recent years have seen unprecedented investment in additive manufacturing research and development by governments and corporations worldwide. This technology has the potential to replace many conventional manufacturing processes, enable the development of new industry practices, and transform the entire manufacturing enterprise. Metal Additive Manufacturing provides an up-to-date review of all essential physics of metal additive manufacturing techniques with emphasis on both laser-based and non-laser-based additive manufacturing processes. This comprehensive volume covers fundamental processes and equipment, governing physics and modelling, design and topology optimization, and more. The text adresses introductory, intermediate, and advanced topics ranging from basic additive manufacturing process classification to practical and material design aspects of additive manufacturability. Written by a panel of expert authors in the field, this authoritative resource: Provides a thorough analysis of AM processes and their theoretical foundations Explains the classification, advantages, and applications of AM processes Describes the equipment required for different AM processes for metallic structures, including laser technologies, positioning devices, feeder and spreader mechanisms, and CAD software Discusses the opportunities, challenges, and current and emerging trends within the field Covers practical considerations, including design for AM, safety, quality assurance, automation, and real-time control of AM processes Includes illustrative cases studies and numerous figures and tables Featuring material drawn from the lead author’s research and professional experience on laser additive manufacturing, Metal Additive Manufacturing is an important source for manufacturing professionals, research and development engineers in the additive industry, and students and researchers involved in mechanical, mechatronics, automatic control, and materials engineering and science.
Book Synopsis Optical Chemical Sensors by : F. Baldini
Download or read book Optical Chemical Sensors written by F. Baldini and published by Springer Science & Business Media. This book was released on 2006-05-03 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers optical chemical sensing by means of optical waveguides, from the fundamentals to the most recent applications. The book includes a historical review of the development of these sensors, from the earliest laboratory prototypes to the first commercial instrumentations. The book reprints a lecture by the Nobel Laureate Charles Townes on the birth of maser and laser, which lucidly illustrates the development of new science and new technology.
Book Synopsis Optical Fiber Sensors by : Arthur N. Chester
Download or read book Optical Fiber Sensors written by Arthur N. Chester and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Study Institute, Erice, Italy, May 10-20, 1986
Book Synopsis Resonance Ionization Spectroscopy 1992, Proceedings of the Sixth INT Symposium on Resonance Ionization Spectroscopy and its Applications, Santa Fe, New Mexico, 24-29 May 1992 by : Charles M. Miller
Download or read book Resonance Ionization Spectroscopy 1992, Proceedings of the Sixth INT Symposium on Resonance Ionization Spectroscopy and its Applications, Santa Fe, New Mexico, 24-29 May 1992 written by Charles M. Miller and published by CRC Press. This book was released on 1992-11-01 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resonance Ionization Spectroscopy 1992 brings together developments in resonance ionization spectroscopy (RIS), an ultrasensitive analytical technique for elemental or isotopic analysis. The development of RIS in this book is of great interest to researchers in laboratories working in physics, chemistry, materials science, and earth and environmental sciences.
Book Synopsis Time-resolved Laser Spectroscopy in Biochemistry by : Joseph R. Lakowicz
Download or read book Time-resolved Laser Spectroscopy in Biochemistry written by Joseph R. Lakowicz and published by . This book was released on 1988 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:
