Products related to Contrast:
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Raman Scattering on Emerging Semiconductors and Oxides
Raman Scattering on Emerging Semiconductors and Oxides presents Raman scattering studies.It describes the key fundamental elements in applying Raman spectroscopies to various semiconductors and oxides without complicated and deep Raman theories. Across nine chapters, it covers:• SiC and IV-IV semiconductors,• III-GaN and nitride semiconductors,• III-V and II-VI semiconductors,• ZnO-based and GaO-based semiconducting oxides,• Graphene, ferroelectric oxides, and other emerging materials,• Wide-bandgap semiconductors of SiC, GaN, and ZnO, and• Ultra-wide gap semiconductors of AlN, Ga2O3, and graphene. Key achievements from the author and collaborators in the above fields are referred to and cited with typical Raman spectral graphs and analyses.Written for engineers, scientists, and academics, this comprehensive book will be fundamental for newcomers in Raman spectroscopy. Zhe Chuan Feng has had an impressive career spanning many years of important work in engineering and tech, including as a professor at the Graduate Institute of Photonics & Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei; establishing the Science Exploring Lab; joining Kennesaw State University as an adjunct professor, part-time; and at the Department of Electrical and Computer Engineering, Southern Polytechnic College of Engineering and Engineering Technology.Currently, he is focusing on materials research for LED, III-nitrides, SiC, ZnO, other semiconductors/oxides, and nanostructures and has devoted time to materials research and growth of III-V and II-VI compounds, LED, III nitrides, SiC, ZnO, GaO, and other semiconductors/oxides. Professor Feng has also edited and published multiple review books in his field, alongside authoring scientific journal papers and conference/proceeding papers.He has organized symposiums and been an invited speaker at different international conferences and universities.He has also served as a guest editor for special journal issues.
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Applied Raman Spectroscopy : Concepts, Instrumentation, Chemometrics, and Life Science Applications
Applied Raman Spectroscopy: Concepts, Instrumentation, Chemometrics, and Life Science Applications synthesizes recent developments in the field, providing an updated overview.The book focuses on the modern concepts of Raman spectroscopy techniques, recent technological innovations, data analysis using chemometric methods, along with the latest examples of life science applications relevant in academia and industries.It will be beneficial to researchers from various branches of science and technology, and it will point them to modern techniques coupled with data analysis methods.In addition, it will help instruct new readers on Raman spectroscopy and hyphenated Raman spectroscopic techniques. The book is primarily written for analytical and physical chemistry students and researchers at a more advanced level who require a broad introductory overview of the applications of Raman spectroscopy, as well as those working in applied industry and clinical laboratories.Students, researchers, and industry workers in related fields, including X-ray and materials science, agriculture, botany, molecular biology and biotechnology, mineralogy, and environmental science will also find it very useful.
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Magneto-Optics and Spectroscopy of Antiferromagnets
Certain magnetic materials have optical properties that make them attractive for a wide variety of applications such as optical switches.This book describes the physics of one class of such magnetooptic materials, the insulating antiferromagnets.The authors summarize recent results concerning the structure, optical properties, spectroscopy, and magnetooptical properties of these materials.In particular, they consider magnetic phase transitions, symmetry effects, the linear magnetooptical effect, magnons, spectroscopic study of spin waves, photoinduced magnetic effects, and the effects of impurities.
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Nanotechnology in Electronics : Materials, Properties, Devices
Nanotechnology in Electronics Enables readers to understand and apply state-of-the-art concepts surrounding modern nanotechnology in electronics Nanotechnology in Electronics summarizes numerous research accomplishments in the field, covering novel materials for electronic applications (such as graphene, nanowires, and carbon nanotubes) and modern nanoelectronic devices (such as biosensors, optoelectronic devices, flexible electronics, nanoscale batteries, and nanogenerators) that are used in many different fields (such as sensor technology, energy generation, data storage and biomedicine). Edited by four highly qualified researchers and professionals in the field, other specific sample topics covered in Nanotechnology in Electronics include: Graphene-based nanoelectronics biosensors, including the history, properties, and fundamentals of graphene, plus fundamentals of graphene derivatives and the synthesis of graphene Zinc oxide piezoelectronic nanogenerators for low frequency applications, with an introduction to zinc oxide and zinc oxide piezoelectric nanogenerators Investigation of the hot junctionless mosfets, including an overview of the junctionless paradigm and a simulation framework of the hot carrier degradation Conductive nanomaterials for printed/flexible electronics application and metal oxide semiconductors for non-invasive diagnosis of breast cancer The fundamental aspects and applications of multiferroic-based spintronic devices and quartz tuning fork based nanosensors. Containing in-depth information on the topic and written intentionally to help with the practical application of concepts described within, Nanotechnology in Electronics is a must-have reference for materials scientists, electronics engineers, and engineering scientists who wish to understand and harness the state of the art in the field.
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Can you explain phase contrast microscopy simply?
Phase contrast microscopy is a technique used to enhance the contrast of transparent, unstained samples, such as living cells or tissues, under a microscope. It works by taking advantage of the phase differences between light waves passing through different parts of the sample, converting these differences into variations in brightness and darkness. This allows for the visualization of internal structures and details that would otherwise be difficult to see with traditional brightfield microscopy. In simple terms, phase contrast microscopy makes transparent samples appear more visible and detailed under the microscope.
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'Which contrast?'
The contrast between light and dark is a common theme in literature and art. It often represents the struggle between good and evil, or the duality of human nature. This contrast can create tension and drama in a story, and can also be used to symbolize deeper themes such as hope and despair, or knowledge and ignorance. In visual art, the use of light and dark can create a sense of depth and dimension, adding visual interest to the work.
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Is the light blue-white quality contrast a contrast?
Yes, the light blue-white quality contrast is a type of contrast. It is a contrast in the sense that it involves the difference in color and brightness between the light blue and white. This type of contrast can create visual interest and impact in a design or composition. It can also be used to draw attention to specific elements or create a sense of depth and dimension.
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Are contrast agents harmful?
Contrast agents are generally considered safe when used appropriately and in recommended doses. However, like any medical procedure, there are potential risks associated with contrast agents, such as allergic reactions or kidney damage in some individuals. It is important for healthcare providers to assess the patient's medical history and potential risk factors before administering contrast agents to minimize any potential harm. Overall, the benefits of using contrast agents in diagnostic imaging procedures usually outweigh the risks.
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A Milliliter-Scale Setup for the Efficient Characterization of Multicomponent Vapor-Liquid Equilibria Using Raman Spectroscopy
Vapor-liquid equilibrium (VLE) data are of major importance for the chemical industry.Despite significant progress in predictive methods, experimental VLE data are still indispensable.In this work, we address the need for experimental VLE data.Commonly, the characterization of VLE requires significant experimental effort.To limit the experimental effort, VLE measurements are frequently conducted by synthetic methods which employ samples of known composition and avoid complex analytics and sampling issues.In contrast, analytical methods provide independent information on phase compositions, commonly based on sampling and large amounts of substance. In the first part of this work, we employ a synthetic method, the well-established Cailletet setup, to characterize the high pressure VLE of two promising binary biofuel blends.The Cailletet method serves as a state of the art reference method that enables collecting data of remarkable accuracy.However, extensive infrastructure is needed. In the second part, to avoid extensive infrastructure and overcome limitations of previous methods, we develop a novel analytical milliliter-scale setup for the noninvasive and efficient characterization of VLE: RAMSPEQU (Raman Spectroscopic Phase Equilibrium Characterization).The novel setup saves substance and rapidly characterizes VLE.Sampling and its associated errors are avoided by analyzing phase compositions using Raman spectroscopy.Thereby, volumes of less than 3 ml are sufficient for reliable phase equilibrium measurements.To enable rapid data generation and save substance, we design an integrated workow combining Raman signal calibration and VLE measurement.As a result, RAMSPEQU gives access to up to 15 pT xy-data sets per workday.RAMSPEQU is successfully validated against pure component and binary VLE data from literature. However, mixtures with only two components rarely depict real industrial applications.As the number of experiments increases strongly with a rising number of components, the efficient RAMSPEQU setup seems particularly suited for multicomponent systems.In the third part of this work, we employ the RAMSPEQU setup for the characterization of a quaternary system and its binary subsystems. 22 ml and 105 ml of the binary and quaternary mixtures are sufficient for an extensive VLE characterization. The RAMSPEQU setup and its integrated workow enable the characterization of multicomponent VLE while saving significant amounts of substance and laboratory time.
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Nanotechnology-Enhanced Solid Materials : Design, Synthesis, Properties, Applications, and Perspectives
This new volume highlights the emergence and rapid development of nanotechnology-enhanced solid materials and the ways they have impacted almost every aspect of nanoengineering.The chapters explore the role of nanomaterials in industries in diverse applications, such as for insulation and reinforcement of composite materials.The book focuses on the design, synthesis, and properties of solid materials, presenting updated, practical, and systematic knowledge on the modification of nanomaterials.The topics include photovoltaic applications of solid carbons, mesoporous silica nanomaterials, smart biopolymer composites and polymer solids, graphene oxide as an emerging solid-based nanocomposite material, steady-state creep deformation, and more.
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Nanotechnology for Hydrogen Production and Storage : Nanostructured Materials and Interfaces
Nanotechnology for Hydrogen Production and Storage: Nanostructured Materials and Interfaces presents an evaluation of the various nano-based systems for hydrogen generation and storage.With a focus on challenges and recent developments, the book analyzes nanomaterials with the potential to boost hydrogen production and improve storage.It assesses the potential improvements to industrially important hydrogen production technologies by way of better surface-interface control through nanostructures of strategical composites of metal oxides, metal chalcogenides, plasmonic metals, conducting polymers, carbonaceous materials, and bio-interfaces with different types of algae and bacteria. In addition, the efficiency of various photochemical water splitting processes to generate renewable hydrogen energy are reviewed, with a focus on natural water splitting via photosynthesis, and the use of various metallic and non-metallic nanomaterials in anthropogenic/artificial water splitting processes is analyzed.Finally, the potential of nanomaterials in enhancing hydrogen generation in dark- and photo-fermentative organisms is explored, along with various nano-based systems for hydrogen generation and associated significant challenges and advances in biohydrogen research and development.
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Nonlinear Optics on Ferroic Materials
Nonlinear Optics on Ferroic Materials Covering the fruitful combination of nonlinear optics and ferroic materials!The use of nonlinear optics for the study of ferroics, that is, magnetically, electrically or otherwise spontaneously ordered and switchable materials has witnessed a remarkable development since its inception with the invention of the laser in the 1960s.This book on Nonlinear Optics on Ferroic Materials reviews and advances an overarching concept of ferroic order and its exploration by nonlinear-optical methods.In doing so, it brings together three fields of physics: symmetry, ferroic order, and nonlinear laser spectroscopy.It begins by introducing the fundamentals for each of these fields.The book then discusses how nonlinear optical studies help to reveal properties of ferroic materials that are often inaccessible with other methods.In this, consequent use is made of the unique degrees of freedom inherent to optical experiments.An excursion into the theoretical foundations of nonlinear optical processes in ferroics rounds off the discussion.The final part of the book explores classes of ferroic materials of primary interest.In particular, this covers multiferroics with magnetoelectric correlations and oxide-electronic heterostructures.An outlook towards materials exhibiting novel forms of ferroic states or correlated arrangements beyond ferroic order and the study these systems by nonlinear optics concludes the work.The book is aimed equally at experienced scientists and young researchers at the interface between condensed-matter physics and optics and with a taste for bold, innovative ideas.
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What is contrast analysis?
Contrast analysis is a statistical method used to compare the differences between groups or conditions in a study. It involves creating specific comparisons, or contrasts, between groups to determine if there are significant differences in the outcome variable. This method allows researchers to identify which specific groups or conditions are significantly different from each other, providing a more detailed understanding of the relationships between variables in a study. Contrast analysis is commonly used in experimental and observational research to test hypotheses and make comparisons between different levels of a factor.
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What is a contrast?
A contrast is a comparison between two or more different things, highlighting their differences. It is used to emphasize the distinctions between the subjects being compared, often to make a point or to help the audience better understand the differences. Contrasts can be found in various forms of communication, such as literature, art, and everyday conversations, to create a more vivid and impactful depiction of the subjects being compared.
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What is the quality contrast?
Quality contrast refers to the comparison between two or more items based on their respective qualities or characteristics. It involves evaluating the differences in the attributes, features, or performance of the items to determine which one is superior or more desirable. Quality contrast helps in making informed decisions by highlighting the strengths and weaknesses of each option, allowing individuals to choose the best fit for their needs or preferences.
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Why is contrast agent used?
Contrast agents are used in medical imaging procedures such as CT scans, MRIs, and X-rays to help enhance the visibility of certain tissues or blood vessels that would otherwise be difficult to see. By highlighting specific areas of the body, contrast agents can help healthcare providers make more accurate diagnoses and treatment plans. This can be especially important in detecting tumors, infections, or other abnormalities that may not be easily visible without the use of contrast agents.
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