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Author: Vidhu S. Tiwari Publisher: ISBN: Category : Chemical detectors Languages : en Pages :
Book Description
Laser Raman Spectroscopy (LRS) has received worldwide acknowledgement as a powerful molecular"'finger print" technique. The Raman spectrum of sample contains useful information such as molecular identity, composition, constituent's concentration ratio etc. These information are manifested in the Raman spectrum in band heights, peak wavelength, band areas etc. The basis of quantitative analysis in Raman spectroscopy lies in the measurement of Raman band intensity, which is linearly dependent upon the sample concentration. On the other hand, Raman spectroscopy can also yield the qualitative information of samples by exhibiting bands corresponding to various chemical constituents in the sample mixture. The potentiality of Raman spectroscopy to perform quantitative as well as qualitative analysis of samples has been exploited in the development of Raman sensors in conjugation with the techniques of fiber optics. The main focus of the presented doctoral work is to realize a fiber optic Raman sensor to monitor the quality of liquid oxygen (LO2) in a rocket engine feed line. In this research investigation, I have shown how a bulk experimental configuration can be transformed to miniaturized prototype sensor, which is equally capable to determine the ratio of liquid oxygen and liquid nitrogen in their cryogenic mixture. This research was extended to monitor the concentration of oxygen and nitrogen in their gaseous mixture. Further, I have demonstrated that the Raman spectroscopy has the potentiality to measure the temperature of hydrogen in a laboratory environment by monitoring the variation in Raman rotation-vibrational line of hydrogen gas with temperature. Finally, I have experimentally studied the surface enhanced Raman spectroscopy (SERS) of silver colloidal solution, which is another interesting branch of Raman spectroscopy that has transcended the limitation of very low Raman cross-section to offer more insight to the chemical properties of samples.
Author: Vidhu S. Tiwari Publisher: ISBN: Category : Chemical detectors Languages : en Pages :
Book Description
Laser Raman Spectroscopy (LRS) has received worldwide acknowledgement as a powerful molecular"'finger print" technique. The Raman spectrum of sample contains useful information such as molecular identity, composition, constituent's concentration ratio etc. These information are manifested in the Raman spectrum in band heights, peak wavelength, band areas etc. The basis of quantitative analysis in Raman spectroscopy lies in the measurement of Raman band intensity, which is linearly dependent upon the sample concentration. On the other hand, Raman spectroscopy can also yield the qualitative information of samples by exhibiting bands corresponding to various chemical constituents in the sample mixture. The potentiality of Raman spectroscopy to perform quantitative as well as qualitative analysis of samples has been exploited in the development of Raman sensors in conjugation with the techniques of fiber optics. The main focus of the presented doctoral work is to realize a fiber optic Raman sensor to monitor the quality of liquid oxygen (LO2) in a rocket engine feed line. In this research investigation, I have shown how a bulk experimental configuration can be transformed to miniaturized prototype sensor, which is equally capable to determine the ratio of liquid oxygen and liquid nitrogen in their cryogenic mixture. This research was extended to monitor the concentration of oxygen and nitrogen in their gaseous mixture. Further, I have demonstrated that the Raman spectroscopy has the potentiality to measure the temperature of hydrogen in a laboratory environment by monitoring the variation in Raman rotation-vibrational line of hydrogen gas with temperature. Finally, I have experimentally studied the surface enhanced Raman spectroscopy (SERS) of silver colloidal solution, which is another interesting branch of Raman spectroscopy that has transcended the limitation of very low Raman cross-section to offer more insight to the chemical properties of samples.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Laser Raman Spectroscopy (LRS) has received worldwide acknowledgement as a powerful molecular finger print technique. The Raman spectrum of sample contains useful information such as molecular identity, composition, constituents concentration ratio etc. These information are manifested in the Raman spectrum in band heights, peak wavelength, band areas etc. The basis of quantitative analysis in Raman spectroscopy lies in the measurement of Raman band intensity, which is linearly dependent upon the sample concentration. On the other hand, Raman spectroscopy can also yield the qualitative information of samples by exhibiting bands corresponding to various chemical constituents in the sample mixture. The potentiality of Raman spectroscopy to perform quantitative as well as qualitative analysis of samples has been exploited in the development of Raman sensors in conjugation with the techniques of fiber optics. The main focus of the presented doctoral work is to realize a fiber optic Raman sensor to monitor the quality of liquid oxygen (LO2) in a rocket engine feed line. In this research investigation, I have shown how a bulk experimental configuration can be transformed to miniaturized prototype sensor, which is equally capable to determine the ratio of liquid oxygen and liquid nitrogen in their cryogenic mixture. This research was extended to monitor the concentration of oxygen and nitrogen in their gaseous mixture. Further, I have demonstrated that the Raman spectroscopy has the potentiality to measure the temperature of hydrogen in a laboratory environment by monitoring the variation in Raman rotation-vibrational line of hydrogen gas with temperature. Finally, I have experimentally studied the surface enhanced Raman spectroscopy (SERS) of silver colloidal solution, which is another interesting branch of Raman spectroscopy that has transcended the limitation of very low Raman cross-section to offer more insight to the chemical properties of samples.
Author: Zujie Fang Publisher: John Wiley & Sons ISBN: 0470575409 Category : Technology & Engineering Languages : en Pages : 494
Book Description
This book describes the latest development in optical fiber devices, and their applications to sensor technology. Optical fiber sensors, an important application of the optical fiber, have experienced fast development, and attracted wide attentions in basic science as well as in practical applications. Sensing is often likened to human sense organs. Optical fiber can not only transport information acquired by sensors at high speed and large volume, but also can play the roles of sensing element itself. Compared with electric and other types of sensors, fiber sensor technology has unique merits. It has advantages over conventional bulky optic sensors, such as combination of sensing and signal transportation, smaller size, and possibility of building distributed systems. Fiber sensor technology has been used in various areas of industry, transportation, communication, security and defense, as well as daily life. Its importance has been growing with the advancement of the technology and the expansion of the scope of its application, a growth this book fully describes.
Author: Eric Udd Publisher: John Wiley & Sons ISBN: 1119678862 Category : Science Languages : en Pages : 628
Book Description
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.
Author: Ignacio Del Villar Publisher: John Wiley & Sons ISBN: 1119534771 Category : Technology & Engineering Languages : en Pages : 544
Book Description
The most complete, one-stop reference for fiber optic sensor theory and application Optical Fiber Sensors: Fundamentals for Development of Optimized Devices constitutes the most complete, comprehensive, and up-to-date reference on the development of optical fiber sensors. Edited by two respected experts in the field and authored by experienced engineers and scientists, the book acts as a guide and a reference for an audience ranging from graduate students to researchers and engineers in the field of fiber optic sensors. The book discusses the fundamentals and foundations of fiber optic sensor technology and provides real-world examples to illuminate and illustrate the concepts found within. In addition to the basic concepts necessary to understand this technology, Optical Fiber Sensors includes chapters on: Distributed sensing with Rayleigh, Raman and Brillouin scattering methods Biomechanical sensing Gas and volatile organic compound sensors Application of nanotechnology to optical fiber sensors Health care and clinical diagnosis And others Graduate students as well as professionals who work with optical fiber sensors will find this volume to be an indispensable resource and reference.
Author: David A. Krohn Publisher: Isa ISBN: 9781556170102 Category : Technology & Engineering Languages : en Pages : 270
Book Description
Aims to provide a solid overall background in fibre optic sensors and discusses mechanisms and configurations for a wide range of applications for measurement and analysis. The author also discusses both sides of the case for fibre optic sensors, including sensitivity and dynamic response.
Author: L.S. Grattan Publisher: Springer Science & Business Media ISBN: 9401724849 Category : Technology & Engineering Languages : en Pages : 340
Book Description
Environmental and chemical sensors in optical fiber sensor technology The nature of the environment in which we live and work, and the precarious state of many aspects of the natural environment, has been a major lesson for scientists over the last few decades. Public awareness of the issues involved is high, and often coupled with a scepticism of the ability of the scientist and engineer to provide an adequate, or even rapid solution to the preservation of the environment before further damage is done, and to achieve this with a mini mum of expenditure. Monitoring of the various aspects of the environment, whether it be external or internal to ourselves and involving chemical, physical or biomedical parameters is an essential process for the well-being of mankind and of the individual. Legis lative requirements set new standards for measurement and control all around us, which must be met by the most appropriate of the technologies available, commensurate with the costs involved. Optical fiber sensor technology has a major part to play in this process, both to complement existing technologies and to promote new solutions to difficult measurement issues. The developments in new sources and detectors covering wider ranges of the electromagnetic spectrum, with higher sensitivity, allow the use of techniques that some time ago would have been considered inappropriate or lacking in sufficient sensitivity.
Author: Ignacio R. Matias Publisher: Springer ISBN: 3319426257 Category : Technology & Engineering Languages : en Pages : 379
Book Description
This book describes important recent developments in fiber optic sensor technology and examines established and emerging applications in a broad range of fields and markets, including power engineering, chemical engineering, bioengineering, biomedical engineering, and environmental monitoring. Particular attention is devoted to niche applications where fiber optic sensors are or soon will be able to compete with conventional approaches. Beyond novel methods for the sensing of traditional parameters such as strain, temperature, and pressure, a variety of new ideas and concepts are proposed and explored. The significance of the advent of extended infrared sensors is discussed, and individual chapters focus on sensing at THz frequencies and optical sensing based on photonic crystal structures. Another important topic is the resonances generated when using thin films in conjunction with optical fibers, and the enormous potential of sensors based on lossy mode resonances, surface plasmon resonances, and long-range surface exciton polaritons. Detailed attention is also paid to fiber Bragg grating sensors and multimode interference sensors. Each chapter is written by an acknowledged expert in the subject under discussion.
Author: Publisher: ISBN: Category : Languages : en Pages : 7
Book Description
The goal of this program was to develop techniques and instrumentation for the implementation of Raman spectroscopy as a chemical sensor for both gas and liquid phase samples. Surface enhanced Raman techniques have been employed for low level detection. Novel SERS substrates have been demonstrated which enable complexation and preconcentration of gas phase species, a new development since SERS had previously been associated only with the liquid phase. 'ne substrates were demonstrated for Raman sensing of hydrazine, ethanol, dimethyl methylphosphonate (DMMP), and other vapor species. in order to conduct remote sensing using Raman, a fiber optic probe, was developed. lie probe permits the excitation and collection of Raman spectra over>50 m of optical fiber without interference from scattering originating within the fibers themselves, previously a serious problem with this approach. Spectral analysis has been conducted with small spectrographs, some of them palm-sized. Special Raman filters based on holographic optical elements were developed for this purpose, removing all vestiges of the primary Raman excitation light before introducing the scattered Raman light into the spectrograph. Several spectrograph configurations were examined, including a novel Echelle design which enables better than 1 cm-1 spectral resolution in a compact package (e.g., - 10(3) cm3, including CCD detector). Raman, SERS, Fiber Optic, Laser, Sensor.
Author: L.S. Grattan Publisher: Springer Science & Business Media ISBN: 1475760779 Category : Technology & Engineering Languages : en Pages : 330
Book Description
Systems and Applications in Optical Fiber Sensor Technology The essential technology which underpins developments in optical fiber sensors continues to expand, and continues to be driven to a very large extent by advances in optoelectronics which have been produced for the ever-expanding optical com munications systems and networks of the world. The steps forward in the technol ogy, often accompanied by a reduction in the price of associated components, have been, and continue to be, adapted for use in a wide variety of optical fiber sensor systems. These include, for example, the use of photoinduced gratings as fiber sensor components, coupled with the wider availability of shorter wavelength lasers, bright luminescent sources and high-sensitivity detectors which have opened up new possibilities for both novel fiber optic sensor applications and new sensing systems. This is to be welcomed at a time when, coupled with integrated optic miniaturized devices and detectors, real possibilities of systems integration, at lower cost and increased utility, can be offered. The fiber laser, and the expansions of the types and availability of the doped fiber on which it is based, offer further examples of the integration of the essential components of advanced optical sensor systems, fitted for a new range of applications.
Author: Vidhu S. Tiwari
Author: Vidhu S. Tiwari
Author: 
Author: Zujie Fang
Author: Eric Udd
Author: Ignacio Del Villar
Author: David A. Krohn
Author: L.S. Grattan
Author: Ignacio R. Matias
Author: 
Author: L.S. Grattan