Download or read book Emulsification Separation and Manipulation of Oil water Systems Using Condensation Electrocoalescence and Electrowetting written by Ingrid Fuller Guha and published by . This book was released on 2018 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores the emulsification, separation, and manipulation of oil/water mixtures using a range of chemical, mechanical, and electrical techniques. Simply explained, this thesis reports new methods to emulsify oil and water using condensation, separate oil and water using low-voltage electrocoalescence, and manipulate oil and water using ultra low-voltage electrowetting. The emulsification method relies on condensation of one liquid phase onto another. As nanoscale droplets of water condense onto the surface of oil, they are submerged and stabilized in the oil by a surfactant in the oil phase. The concentration of surfactant and time of condensation determine the size and stability of the resulting emulsions. The separation method presented in this thesis redesigns the configuration of the standard electrocoalescence setup and the dielectric materials used. The design employs a surface configuration in place of a bulk configuration for electrocoalescence. Additionally, a high-K dielectric (hafnium oxide) is used in place of a hydrophobic low-K dielectric (e.g. a fluoropolymer). A thermodynamically stable nanoscale oil film-a lipid bilayer-forms on the surface of the hafnium oxide, effectively rendering the surface hydrophobic by buffering water drops from the surface and preventing pinning. This surface configuration coupled with the use of a high-K dielectric drastically reduces the voltage required to induce electrocoalescence. The method of manipulating oil and water presented in this thesis is the electrowetting of a water drop on bare silicon in an oil environment containing zwitterions. The zwitterions form a nanoscale lipid bilayer between the water drop and the silicon surface. This electrowetting system contains no deposited solid dielectrics, resulting in ultra low-voltage actuation of the electrowetting effect. This thesis presents the theory, experimental results, and discussion of the experimental results for each method of controlling water/oil mixtures.
Download or read book Emulsions written by Johan Sjöblom and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, Bergen, Norway, June 24-25, 1991
Download or read book Electrokinetics and Electrohydrodynamics in Microsystems written by Antonio Ramos and published by Springer Science & Business Media. This book was released on 2011-09-20 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among the most promising techniques to handle small objects at the micrometer scale are those that employ electrical forces, which have the advantages of voltage-based control and dominance over other forces. The book provides a state-of-the-art knowledge on both theoretical and applied aspects of the electrical manipulation of colloidal particles and fluids in microsystems and covers the following topics: dielectrophoresis, electrowetting, electrohydrodynamics in microsystems, and electrokinetics of fluids and particles. The book is addressed to doctoral students, young or senior researchers, chemical engineers and/or biotechnologists with an interest in microfluidics, lab-on-chip or MEMS.
Download or read book Inorganic Particle Synthesis via Macro and Microemulsions written by Dibyendu Ganguli and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Nanotechnology" is now very well known as one of the most important key technologies in science and industry. In the field of material science and engineering, nanoparticles should be unit materials, as well as atoms and molecules, to build ceramics, devices, catalysts, and machines, and the "nanoparticle technology" is thus attracting. This novel technology includes various methodologies for nanoparticles: preparation, surface-modification via chemical and/or physical treatments, immobilization and arrangement on supports or substrates, to achieve high performance for luminescence properties in light emitting devices, and high efficiency for catalytic and photocatalytic reactions in chemical synthesis, chemical decomposition, and artificial photosynthesis, etc. It should be needless to say that the preparation of nanoparticles, having precisely controlled particle size, size distribution, chemical composition, and surface properties, is essentially important to realize "true nanoparticle technology". This book, written by Dr. Dibyendu Ganguli and Dr. Munia Ganguli, deals with the preparation methodologies for inorganic nanoparticles using macro- and microemulsions as "microreactor". There are several differences between these two emulsions, in addition to water droplet size: thermodynamic stability, and fusion-redispersion dynamics of the droplets. The properties of the nanoparticles prepared in these emulsion systems are seriously influenced and controlled by the selection of dynamic and static conditions.
Download or read book Structures and Dynamics of Asphaltenes written by Oliver C. Mullins and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigative assault upon the enigmatic asphaltenes has recently resulted in sig nificant advances in many varied disciplines. Taken individually, each discipline exposes certain facets of asphaltenes, but each, alone, can never reveal asphaltenes from all van tages. Even seemingly narrowly focused issues such as the molecular structures of asphal tenes, or the colloidal structures of asphaltenes require a confluence of many lines of investigation to yield an understanding which differs from truth by diminishing uncer tainty. An holistic treatment of the asphaltenes is a powerful approach to evolve further their understanding. For example, examination of asphaltenes at the highest resolution yields molecular structure. A slight increase in scale probes asphaltene colloidal structure. Weaving together asphaltene studies performed at different length scales results in a fabric which envelops an encompassing vision of asphaltenes. At the same time, the interfaces of these hierarchical studies provide additional constraints on imagination, more than investi gations at individual length scales alone. These considerations shaped the timing, format, and the content of our book. The editors are very appreciative of the diligence and hard work manifest in each of the contributed chapters herein. We thank the contributing authors for making this project a success. Oliver C. Mullins Eric Y. Sheu vii CONTENTS I. Asphaltenes: Types and Sources ...................................... .
Download or read book Elementary Mechanics Using Matlab written by Anders Malthe-Sørenssen and published by Springer. This book was released on 2015-06-01 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book – specifically developed as a novel textbook on elementary classical mechanics – shows how analytical and numerical methods can be seamlessly integrated to solve physics problems. This approach allows students to solve more advanced and applied problems at an earlier stage and equips them to deal with real-world examples well beyond the typical special cases treated in standard textbooks. Another advantage of this approach is that students are brought closer to the way physics is actually discovered and applied, as they are introduced right from the start to a more exploratory way of understanding phenomena and of developing their physical concepts. While not a requirement, it is advantageous for the reader to have some prior knowledge of scientific programming with a scripting-type language. This edition of the book uses Matlab, and a chapter devoted to the basics of scientific programming with Matlab is included. A parallel edition using Python instead of Matlab is also available. Last but not least, each chapter is accompanied by an extensive set of course-tested exercises and solutions.
Download or read book Catalysis for Clean Energy and Environmental Sustainability written by K. K. Pant and published by Springer Nature. This book was released on 2021-04-01 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is part of a two-volume work that offers a unique blend of information on realistic evaluations of catalyst-based synthesis processes using green chemistry principles and the environmental sustainability applications of such processes for biomass conversion, refining, and petrochemical production. The volumes provide a comprehensive resource of state-of-the-art technologies and green chemistry methodologies from researchers, academics, and chemical and manufacturing industrial scientists. The work will be of interest to professors, researchers, and practitioners in clean energy catalysis, green chemistry, chemical engineering and manufacturing, and environmental sustainability. This volume focuses on catalyst synthesis and green chemistry applications for petrochemical and refining processes. While most books on the subject focus on catalyst use for conventional crude, fuel-oriented refineries, this book emphasizes recent transitions to petrochemical refineries with the goal of evaluating how green chemistry applications can produce clean energy through petrochemical industrial means. The majority of the chapters are contributed by industrial researchers and technicians and address various petrochemical processes, including hydrotreating, hydrocracking, flue gas treatment and isomerization catalysts.
Download or read book Wet Granular Matter A Truly Complex Fluid written by Stephan Herminghaus and published by World Scientific. This book was released on 2013-08-29 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a monograph written for the young and advanced researcher who is entering the field of wet granular matter and keen to understand the basic physical principles governing this state of soft matter. It treats wet granulates as an instance of a ternary system, consisting of the grains, a primary, and a secondary fluid. After addressing wetting phenomena in general and outlining the basic facts on dry granular systems, a chapter on basic mechanisms and their effects is dedicated to every region of the ternary phase diagram. Effects of grain shape and roughness are considered as well. Rather than addressing engineering aspects such as existing books on this topic do, the book aims to provide a generalized framework suitable for those who want to understand these systems on a more fundamental basis.
Download or read book Photodissociation Dynamics written by Reinhard Schinke and published by Cambridge University Press. This book was released on 1995-05-11 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photodissociation induced by the absorption of single photons permits the detailed study of molecular dynamics such as the breaking of bonds, internal energy transfer and radiationless transitions. The availability of powerful lasers operating over a wide frequency range has stimulated rapid development of new experimental techniques which make it possible to analyse photodissociation processes in unprecedented detail. This text elucidates the achievements in calculating photodissociation cross-sections and fragment state distributions from first principles, starting from multi-dimensional potential energy surfaces and the Schrödinger equation of nuclear motion. Following an extended introduction in which the various types of observables are outlined, the book summarises the basic theoretical tools, namely the time-independent and the time-dependent quantum mechanical approaches as well as the classical picture of photodissociation. The discussions of absorption spectra, diffuse vibrational structures, the vibrational and rotational state distributions of the photofragments form the core of the book. More specific topics such as the dissociation of vibrationally excited molecules, emission during dissociation, or nonadiabatic effects are also discussed. It will be of interest to graduate students and senior scientists working in molecular physics, spectroscopy, molecular collisions and molecular kinetics.
Download or read book Complex shaped Metal Nanoparticles written by Tapan K. Sau and published by John Wiley & Sons. This book was released on 2012-08-07 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past few years have witnessed the development of non-spherical metal nanoparticles with complex morphologies, which offer tremendous potential in materials science, chemistry, physics and medicine. Covering all important aspects and techniques of preparation and characterization of metal nanoparticles with controlled morphology and architecture, this book provides a sound overview - from the basics right up to recent developments. Renowned research scientists from all over the world present the existing knowledge in the field, covering theory and modeling, synthesis and properties of these nanomaterials. By emphasizing the underlying concepts and principles in detail, this book enables researchers to fully recognize the future research scope and the application potential of the complex-shaped metal nanoparticles, inspiring further research in this field.
Download or read book Advances in Bioenergy and Microfluidic Applications written by Mohammad Reza Rahimpour and published by Elsevier. This book was released on 2021-02-02 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since fossil fuels suffer from dangerous side effects for the environment and their resources are limited, bioenergy attracted many attentions in various aspects as an alternative solution. Therefore, increasing number of researches are conducted every year and the processes updated frequently to make them more economic and industrially beneficial. Advances in Bioenergy and Microfluidic Applications reviews recent developments in this field and covers various advanced bio-applications, which rarely are reviewed elsewhere. The chapters are started from converting biomass to valuable products and continues with applications of biomass in water-treatment, novel sorbents and membranes, refineries, microfluidic devices and etc. The book covers various routes for gaining bioenergy from biomass. Their composition, carbon contents, heat production capacities and other important factors are reviewed in details in different chapters. Then, the processes for upgrading them directly and indirectly (using metabolic engineering and ultrasonic devices) to various fuels are explained. Each process is reviewed both technically and economically and the product analysis is given. Besides, the effect of various catalysts on increasing selectivity and productivity are taken into account. Biofuels are compared with fossil fuels and challenges in the way of bioenergy production are explained. Moreover, advanced bio-applications in membranes, adsorption, waste water treatment, microfluidic devices and etc. are introduced. This book provides a good insight about such bioprocesses and microfluidics devices for researchers, students, professors and related departments and industries that care about energy resources and curious about recent advances in related methods and technologies. Despite other books which review biomass chemistry and conversion, the current book emphasize on the application of biomass in the mentioned areas. Therefore, one can gain a better and more comprehensive insight by reading the book. Describes energy production from biomass, biomass conversion, their advantages and limitations Describes the application of biomass in membranes, sorbents, water-treatment, refineries, and microfluidic devices Offers a future outlook of bioenergy production and possibility to apply in the industries
Download or read book Two Phase Flow Boiling and Condensation written by S. Mostafa Ghiaasiaan and published by Cambridge University Press. This book was released on 2014-08-07 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text is an introduction to gas-liquid two-phase flow, boiling and condensation for graduate students, professionals, and researchers in mechanical, nuclear, and chemical engineering. The book provides a balanced coverage of two-phase flow and phase change fundamentals, well-established art and science dealing with conventional systems, and the rapidly developing areas of microchannel flow and heat transfer. It is based on the author's more than 15 years of teaching experience. Instructors teaching multiphase flow have had to rely on a multitude of books and reference materials. This book remedies that problem by covering all the topics that are essential for a graduate first course. Among the important areas that are discussed in the book, and are not adequately covered by virtually all the available textbooks, are: two-phase flow model conservation equations and their numerical solution; condensation with and without noncondensables; and two-phase flow, boiling, and condensation in mini and microchannels.
Download or read book Applied Statistics written by Lothar Sachs and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 737 pages. Available in PDF, EPUB and Kindle. Book excerpt: This outline of statistics as an aid in decision making will introduce a reader with limited mathematical background to the most important modern statistical methods. This is a revised and enlarged version, with major extensions and additions, of my "Angewandte Statistik" (5th ed.), which has proved useful for research workers and for consulting statisticians. Applied statistics is at the same time a collection of applicable statistical methods and the application of these methods to measured and/or counted observations. Abstract mathematical concepts and derivations are avoided. Special emphasis is placed on the basic principles of statistical formulation, and on the explanation of the conditions under which a certain formula or a certain test is valid. Preference is given to consideration of the analysis of small sized samples and of distribution-free methods. As a text and reference this book is written for non-mathematicians, in particular for technicians, engineers, executives, students, physicians as well as researchers in other disciplines. It gives any mathematician interested in the practical uses of statistics a general account of the subject. Practical application is the main theme; thus an essential part of the book consists in the 440 fully worked-out numerical examples, some of which are very simple; the 57 exercises with solutions; a number of different compu tational aids; and an extensive bibliography and a very detailed index. In particular, a collection of 232 mathematical and mathematical-statistical tables serves to enable and to simplify the computations.
Download or read book Lab on a Chip Fabrication and Application written by Margarita Stoytcheva and published by BoD – Books on Demand. This book was released on 2016-06-29 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The necessity of on-site, fast, sensitive, and cheap complex laboratory analysis, associated with the advances in the microfabrication technologies and the microfluidics, made it possible for the creation of the innovative device lab-on-a-chip (LOC), by which we would be able to scale a single or multiple laboratory processes down to a chip format. The present book is dedicated to the LOC devices from two points of view: LOC fabrication and LOC application.
Download or read book Emulsions written by Paul Becher and published by . This book was released on 1977 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: A great introduction to the study and fomulation of emulsions, this book discusses background theory, physical properties of emulsions, theories of emulsion stability and instability, emulsifying agents and their chemistry, formulation procedures and techniques, and industrial applications of emulsification and demulsification.
Download or read book Dynamics of Complex Fluids written by M. J. Adams and published by World Scientific Publishing Company. This book was released on 1998 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors of this important volume present an up-to-date, wide-ranging view on developments in the analysis of complex fluid behaviour. Emphasis is placed upon the relation between small scale structure and large scale response: this brings together the approaches of the molecular physicist and the continuum mechanicist. Experiments, constitutive models and computer simulations are combined to yield new insights into the flow behaviour of polymer melts and solutions, colloidal and neutral particle suspensions, and pastes and soils.
Download or read book Perturbative Quantum Chromodynamics written by A. H. Mueller and published by World Scientific. This book was released on 1989 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will be of great interest to advanced students and researchers in the area of high energy theoretical physics. Being the most complete and updated review volume on Perturbative QCD, it serves as an extremely useful textbook or reference book. Some of the reviews in this volume are the best that have been written on the subject anywhere.
