Droplet Wetting And Evaporation

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Droplet Wetting and Evaporation

Author : David Brutin
Publisher : Academic Press
ISBN 13 : 0128008083
Total Pages : 464 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis Droplet Wetting and Evaporation by : David Brutin

Download or read book Droplet Wetting and Evaporation written by David Brutin and published by Academic Press. This book was released on 2015-05-11 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Droplet Wetting and Evaporation provides engineers, students, and researchers with the first comprehensive guide to the theory and applications of droplet wetting and evaporation. Beginning with a relevant theoretical background, the book moves on to consider specific aspects, including heat transfer, flow instabilities, and the drying of complex fluid droplets. Each chapter covers the principles of the subject, addressing corresponding practical issues and problems. The text is ideal for a broad range of domains, from aerospace and materials, to biomedical applications, comprehensively relaying the challenges and approaches from the different communities leading the way in droplet research and development. Provides a broad, cross-subject coverage of theory and application that is ideal for engineers, students and researchers who need to follow all major developments in this interdisciplinary field Includes comprehensive discussions of heat transfer, flow instabilities, and the drying of complex fluid droplets Begins with an accessible summary of fundamental theory before moving on to specific areas such as heat transfer, flow instabilities, and the drying of complex fluid droplets

Wetting and Evaporation: Droplets of Pure and Complex Fluids

Author :
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (931 download)

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Book Synopsis Wetting and Evaporation: Droplets of Pure and Complex Fluids by :

Download or read book Wetting and Evaporation: Droplets of Pure and Complex Fluids written by and published by . This book was released on 2013 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Microscale Surface Tension and Its Applications

Author : Pierre Lambert
Publisher : MDPI
ISBN 13 : 3039215647
Total Pages : 240 pages
Book Rating : 4.0/5 (392 download)

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Book Synopsis Microscale Surface Tension and Its Applications by : Pierre Lambert

Download or read book Microscale Surface Tension and Its Applications written by Pierre Lambert and published by MDPI. This book was released on 2019-10-21 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building on advances in miniaturization and soft matter, surface tension effects are a major key to the development of soft/fluidic microrobotics. Benefiting from scaling laws, surface tension and capillary effects can enable sensing, actuation, adhesion, confinement, compliance, and other structural and functional properties necessary in micro- and nanosystems. Various applications are under development: microfluidic and lab-on-chip devices, soft gripping and manipulation of particles, colloidal and interfacial assemblies, fluidic/droplet mechatronics. The capillary action is ubiquitous in drops, bubbles and menisci, opening a broad spectrum of technological solutions and scientific investigations. Identified grand challenges to the establishment of fluidic microrobotics include mastering the dynamics of capillary effects, controlling the hysteresis arising from wetting and evaporation, improving the dispensing and handling of tiny droplets, and developing a mechatronic approach for the control and programming of surface tension effects. In this Special Issue of Micromachines, we invite contributions covering all aspects of microscale engineering relying on surface tension. Particularly, we welcome contributions on fundamentals or applications related to: Drop-botics: fluidic or surface tension-based micro/nanorobotics: capillary manipulation, gripping, and actuation, sensing, folding, propulsion and bio-inspired solutions; Control of surface tension effects: surface tension gradients, active surfactants, thermocapillarity, electrowetting, elastocapillarity; Handling of droplets, bubbles and liquid bridges: dispensing, confinement, displacement, stretching, rupture, evaporation; Capillary forces: modelling, measurement, simulation; Interfacial engineering: smart liquids, surface treatments; Interfacial fluidic and capillary assembly of colloids and devices; Biological applications of surface tension, including lab-on-chip and organ-on-chip systems.

Surface Wetting

Author : Kock-Yee Law
Publisher : Springer
ISBN 13 : 3319252143
Total Pages : 169 pages
Book Rating : 4.3/5 (192 download)

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Book Synopsis Surface Wetting by : Kock-Yee Law

Download or read book Surface Wetting written by Kock-Yee Law and published by Springer. This book was released on 2015-11-18 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes wetting fundamentals and reviews the standard protocol for contact angle measurements. The authors include a brief overview of applications of contact angle measurements in surface science and engineering. They also discuss recent advances and research trends in wetting fundamentals and include measurement techniques and data interpretation of contract angles.

Evaporation-induced Non-wetting Droplets on Superhydrophilic Surfaces

Author : Solomon E. Adera
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (829 download)

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Book Synopsis Evaporation-induced Non-wetting Droplets on Superhydrophilic Surfaces by : Solomon E. Adera

Download or read book Evaporation-induced Non-wetting Droplets on Superhydrophilic Surfaces written by Solomon E. Adera and published by . This book was released on 2012 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: A droplet deposited on a rough, lyophilic surface satisfying the imbibition condition, results in spontaneous spreading and hence complete wetting. However, in this thesis, we demonstrate that this wetting behavior can be altered by superheating the substrate such that droplets can reside in a non-wetting state due to evaporation. Photolithography and deep reactive ion etching were used to fabricate well-defined silicon micropillar arrays with a square pattern with varying pillar diameter, height, and center-to-center spacing. Water droplets placed on these microstructured surfaces at room temperature demonstrated superhydrophilic behavior with liquid filling the voids between pillars resulting in very low contact angle, and hence complete wetting. However, when the microstructured surface was superheated above a critical superheat, the superhydrophilicity was lost and non-wetting droplets were formed on the top surface of the micropillar array structure. The superheat required to deposit a non-wetting droplet (> 75°C) was found to be significantly higher than that required to sustain an already deposited non-wetting droplet (

Electrowetting

Author : Frieder Mugele
Publisher : John Wiley & Sons
ISBN 13 : 3527412298
Total Pages : 323 pages
Book Rating : 4.5/5 (274 download)

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Book Synopsis Electrowetting by : Frieder Mugele

Download or read book Electrowetting written by Frieder Mugele and published by John Wiley & Sons. This book was released on 2019-04-29 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: Starting from the basic principles of wetting, electrowetting and fluid dynamics all the way up to those engineering aspects relevant for the development of specific devices, this is a comprehensive introduction and overview of the theoretical and practical aspects. Written by two of the most knowledgeable experts in the field, the text covers both current as well as possible future applications, providing basic working principles of lab-on-a-chip devices and such optofluidic devices as adaptive lenses and optical switches. Furthermore, novel e-paper display technology, energy harvesting and supercapacitors as well as electrowetting in the nano-world are discussed. Finally, the book contains a series of exercises and questions for use in courses on microfluidics or electrowetting. With its all-encompassing scope, this book will equally serve the growing community of students and academic and industrial researchers as both an introduction and a standard reference.

Wetting and Evaporation Studies on Molecularly Modified Surfaces

Author : Dinah Michele Soolaman
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (112 download)

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Book Synopsis Wetting and Evaporation Studies on Molecularly Modified Surfaces by : Dinah Michele Soolaman

Download or read book Wetting and Evaporation Studies on Molecularly Modified Surfaces written by Dinah Michele Soolaman and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wetting and evaporation of liquid microdroplets on solid surfaces are ubiquitous in nature. Two of the many important factors that influence how a droplet wets and "escapes", are the Chemical composition and Roughness of the solid surface. In order to gain a better understanding of these processes as a whole, a systematic study on the factors that influence wetting/evaporation behaviour, including the liquid ́s composition, the liquid-solid interface, and the substrate morphology has been carried out in this thesis. In particular, the evaporation profile and its correlation with the wetting hysteresis have been studied using both water and binary mixtures on self-assembled monolayer (SAM) surfaces. Based on surface modification with mixed SAMs in conjunction with microcontact printing and electrochemical deposition techniques, this work aims at a comprehensive and controlled study of how molecular/structural modification dictate the wetting and evaporation behaviour of microdroplets on the surface.

Dynamic Wetting by Nanofluids

Author : Gui Lu
Publisher : Springer
ISBN 13 : 3662487659
Total Pages : 122 pages
Book Rating : 4.6/5 (624 download)

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Book Synopsis Dynamic Wetting by Nanofluids by : Gui Lu

Download or read book Dynamic Wetting by Nanofluids written by Gui Lu and published by Springer. This book was released on 2015-11-24 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This PhD thesis presents the latest research findings on nanofluid wetting kinetics, which has wide applications in nano/microscale processes and devices. It analyzes complex dynamic wetting by nanofluids using both experiments and multi-scale simulation methods, and presents multiscale (from nano to macroscale) mechanisms and tunable methods to elucidate and control nanofluid dynamic wetting. The book is of interest to university researchers, R&D engineers and graduate students in surface science, materials science and thermal engineering.

Capillarity and Wetting Phenomena

Author : Pierre-Gilles de Gennes
Publisher : Springer Science & Business Media
ISBN 13 : 0387216561
Total Pages : 298 pages
Book Rating : 4.3/5 (872 download)

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Book Synopsis Capillarity and Wetting Phenomena by : Pierre-Gilles de Gennes

Download or read book Capillarity and Wetting Phenomena written by Pierre-Gilles de Gennes and published by Springer Science & Business Media. This book was released on 2013-03-20 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of capillarity is in the midst of a veritable explosion. What is offered here is not a comprehensive review of the latest research but rather a compendium of principles designed for the undergraduate student and for readers interested in the physics underlying these phenomena.

Evaporation and Droplet Growth in Gaseous Media

Author : N.A. Fuchs
Publisher : Elsevier
ISBN 13 : 1483225631
Total Pages : 81 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis Evaporation and Droplet Growth in Gaseous Media by : N.A. Fuchs

Download or read book Evaporation and Droplet Growth in Gaseous Media written by N.A. Fuchs and published by Elsevier. This book was released on 2013-10-22 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaporation and Droplet Growth in Gaseous Media deals with the evaporation of droplets of liquid in gaseous media and the reverse process of droplet growth in a medium supersaturated with the vapor of the liquid. Thediscussion is restricted to the kinetics of evaporation and growth of droplets of pure liquids (and heat transfer to the same). Comprised of three chapters, this book first examines the quasi-stationary evaporation and growth of droplets that are motionless relative to the medium and the hydrodynamic factor is absent. The Maxwell equation, the basis of the theory of evaporation of droplets in a gaseous medium, is taken into account. The influence of the Stefan flow and the concentration change at the surface on the rate of evaporation are considered, along with the evaporation of droplets in a vessel with absorbing walls and the fall in temperature of both free evaporating droplets and supported evaporating droplets. The second chapter is devoted to the quasi-stationary evaporation of droplets in a stream of gas, that is, droplets moving relative to the medium. The last chapter focuses on non-stationary evaporation and growth of droplets that either motionless or moving relative to the medium. This monograph will be of interest to students, practitioners, and researchers in inorganic and structural chemistry.

Sessile Drops of Biological Fluids : Evaporation and Wetting

Author : Wassim Bou-Zeid
Publisher :
ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.:/5 (931 download)

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Book Synopsis Sessile Drops of Biological Fluids : Evaporation and Wetting by : Wassim Bou-Zeid

Download or read book Sessile Drops of Biological Fluids : Evaporation and Wetting written by Wassim Bou-Zeid and published by . This book was released on 2014 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spreading/evaporation process of droplets over solid surfaces is a fundamental process and a wide research field because of number of applications in printing, micro-electronics, DNA analysis and even in biomedical. This experimental work aims to investigate the effect of relative humidity on the contact line dynamics, on the evaporation dynamics and on the final pattern of a drop of whole human blood. The spreading of a pure fluid model that has the same physical properties as human blood was studied and compared to the blood. We showed that bio-colloids play significant effect on the dynamics of contact line and the pinning effect of the drop. For low contact angles, we showed that the spreading/evaporation process could be divided into two regimes. A fast first regime determined by a balance between viscous forces and capillary forces and a second slower regime dominated by the evaporation rate. Physical mechanisms that are responsible for the spreading enhancement are proposed and discussed. The average velocity of the contact line was found to follow the same behaviour as Tanner's model, where the spreading dynamics and geometrical parameters of the droplet are function of relative humidity. The experimental measurements are in a good agreement with the purely diffusive model where the equilibrium wetting radius and contact angle are function of relative humidity. For the morphological analysis of crack patterns, a manual segmentation method was used as a reference for the validation of the automatic developed segmentation method. We showed that the evaporation rate influences structural distribution of plaques in the corona region and hence, the mean crack spacing.

Soft Matter Physics

Author : Masao Doi
Publisher : Oxford University Press, USA
ISBN 13 : 0199652953
Total Pages : 271 pages
Book Rating : 4.1/5 (996 download)

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Book Synopsis Soft Matter Physics by : Masao Doi

Download or read book Soft Matter Physics written by Masao Doi and published by Oxford University Press, USA. This book was released on 2013-07-04 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soft matter (polymers, colloids, surfactants, liquid crystals) are an important class of materials for modern and future technologies. They are complex materials that behave neither like a fluid nor a solid. This book describes the characteristics of such materials and how we can understand such characteristics in the language of physics.

Drop Dynamics and Dropwise Condensation on Textured Surfaces

Author : Sameer Khandekar
Publisher : Springer Nature
ISBN 13 : 3030484610
Total Pages : 462 pages
Book Rating : 4.0/5 (34 download)

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Book Synopsis Drop Dynamics and Dropwise Condensation on Textured Surfaces by : Sameer Khandekar

Download or read book Drop Dynamics and Dropwise Condensation on Textured Surfaces written by Sameer Khandekar and published by Springer Nature. This book was released on 2020-09-11 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an expanded form of the monograph, Dropwise Condensation on Inclined Textured Surfaces, Springer, 2013, published earlier by the authors, wherein a mathematical model for dropwise condensation of pure vapor over inclined textured surfaces was presented, followed by simulations and comparison with experiments. The model factored in several details of the overall quasi-cyclic process but approximated those at the scale of individual drops. In the last five years, drop level dynamics over hydrophobic surfaces have been extensively studied. These results can now be incorporated in the dropwise condensation model. Dropwise condensation is an efficient route to heat transfer and is often encountered in major power generation applications. Drops are also formed during condensation in distillation devices that work with diverse fluids ranging from water to liquid metals. Design of such equipment requires careful understanding of the condensation cycle, starting from the birth of nuclei, followed by molecular clusters, direct growth of droplets, their coalescence, all the way to instability and fall-off of condensed drops. The model described here considers these individual steps of the condensation cycle. Additional discussions include drop shape determination under static conditions, a fundamental study of drop spreading in sessile and pendant configurations, and the details of the drop coalescence phenomena. These are subsequently incorporated in the condensation model and their consequences are examined. As the mathematical model is spread over multiple scales of length and time, a parallelization approach to simulation is presented. Special topics include three-phase contact line modeling, surface preparation techniques, fundamentals of evaporation and evaporation rates of a single liquid drop, and measurement of heat transfer coefficient during large-scale condensation of water vapor. We hope that this significantly expanded text meets the expectations of design engineers, analysts, and researchers working in areas related to phase-change phenomena and heat transfer.

Wetting and Spreading Dynamics, Second Edition

Author : Victor M. Starov
Publisher : CRC Press
ISBN 13 : 0429013744
Total Pages : 472 pages
Book Rating : 4.4/5 (29 download)

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Book Synopsis Wetting and Spreading Dynamics, Second Edition by : Victor M. Starov

Download or read book Wetting and Spreading Dynamics, Second Edition written by Victor M. Starov and published by CRC Press. This book was released on 2019-07-02 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wetting and Spreading Dynamics explains how surface forces acting at the three-phase contact line determine equilibrium, hysteresis contact angles, and other equilibrium and kinetics features of liquids when in contact with solids or with other immiscible liquids. It examines the interaction of surface forces, capillary forces, and properties of the transition zone between the bulk liquid and solid substrate. Significantly revised and updated, the Second Edition features new chapters that cover spreading of non-Newtonian liquids over porous substrates, hysteresis of contact angles on smooth homogeneous substrates, equilibrium and hysteresis contact angles on deformable substrates, and kinetics of simultaneous spreading and evaporation. Drawing together theory and experimental data while presenting over 150 figures to illustrate the concepts, Wetting and Spreading Dynamics, Second Edition is a valuable resource written for both newcomers and experienced researchers.

The Surface Wettability Effect on Phase Change

Author : Marco Marengo
Publisher : Springer
ISBN 13 : 9783030829940
Total Pages : 0 pages
Book Rating : 4.8/5 (299 download)

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Book Synopsis The Surface Wettability Effect on Phase Change by : Marco Marengo

Download or read book The Surface Wettability Effect on Phase Change written by Marco Marengo and published by Springer. This book was released on 2022-10-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Surface Wettability Effect on Phase Change collects high level contributions from internationally recognised scientists in the field. It thoroughly explores surface wettability, with topics spanning from the physics of phase change, physics of nucleation, mesoscale modeling, analysis of phenomena such drop evaporation, boiling, local heat flux at triple line, Leidenfrost, dropwise condensation, heat transfer enhancement, freezing, icing. All the topics are treated by discussing experimental results, mathematical modeling and numerical simulations. In particular, the numerical methods look at direct numerical simulations in the framework of VOF simulations, phase-field simulations and molecular dynamics. An introduction to equilibrium and non-equilibrium thermodynamics of phase change, wetting phenomena, liquid interfaces, numerical simulation of wetting phenomena and phase change is offered for readers who are less familiar in the field. This book will be of interest to researchers, academics, engineers, and postgraduate students working in the area of thermofluids, thermal management, and surface technology.

Wettability and Evaporation of Sessile Drops of Biological Fluids

Author : Wassim Bou-Zeid
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (926 download)

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Book Synopsis Wettability and Evaporation of Sessile Drops of Biological Fluids by : Wassim Bou-Zeid

Download or read book Wettability and Evaporation of Sessile Drops of Biological Fluids written by Wassim Bou-Zeid and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spreading/evaporation process of droplets over solid surfaces is a fundamental process and a wide research field because of number of applications in printing, micro-electronics, DNA analysis and even in biomedical. This experimental work aims to investigate the effect of relative humidity on the contact line dynamics, on the evaporation dynamics and on the final pattern of a drop of whole human blood. The spreading of a pure fluid model that has the same physical properties as human blood was studied and compared to the blood. We showed that bio-colloids play significant effect on the dynamics of contact line and the pinning effect of the drop. For low contact angles, we showed that the spreading/evaporation process could be divided into two regimes. A fast first regime determined by a balance between viscous forces and capillary forces and a second slower regime dominated by the evaporation rate. Physical mechanisms that are responsible for the spreading enhancement are proposed and discussed. The average velocity of the contact line was found to follow the same behaviour as Tanner's model, where the spreading dynamics and geometrical parameters of the droplet are function of relative humidity. The experimental measurements are in a good agreement with the purely diffusive model where the equilibrium wetting radius and contact angle are function of relative humidity. For the morphological analysis of crack patterns, a manual segmentation method was used as a reference for the validation of the automatic developed segmentation method. We showed that the evaporation rate influences structural distribution of plaques in the corona region and hence, the mean crack spacing.

Wetting and Wettability

Author : Mahmood Aliofkhazraei
Publisher : BoD – Books on Demand
ISBN 13 : 9535122150
Total Pages : 386 pages
Book Rating : 4.5/5 (351 download)

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Book Synopsis Wetting and Wettability by : Mahmood Aliofkhazraei

Download or read book Wetting and Wettability written by Mahmood Aliofkhazraei and published by BoD – Books on Demand. This book was released on 2015-12-16 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: On the liquid 's surface, the molecules have fewer neighbors in comparison with the bulk volume. As a result, the energy interaction shows itself in the surface tension. Traditionally, the surface tension can be assumed as a force in the unit of the length which can be counted by the unit of Newton on squared meter, or energy on the units of the surface. The surface tension, implies the interface between liquid and vapor, which is an example of the surface tensions. The equilibrium between these surface tensions, decides that a droplet on a solid surface, would have a droplet form or will change to layer form. This book collects new developments in wetting and wettability science.