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Self-Cleaning of Surfaces and Water Droplet Mobility deals with the self-cleaning of hydrophobic surfaces. Chapters cover the basics of wetting states of fluids and surface c… Read more
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Immediately download your ebook while waiting for your print delivery. No promo code needed.
Self-Cleaning of Surfaces and Water Droplet Mobility deals with the self-cleaning of hydrophobic surfaces. Chapters cover the basics of wetting states of fluids and surface characteristics in terms of texture topology and free energy. The self-cleaning aspects of surfaces, such as various synthesizing and fabrication processes are then introduced and discussed, along with environmental dust properties, including elemental compositions, particle sizes and shapes, and their chemo-mechanics characteristics. In addition, mud formation in humid air, as well as ambient and dry mud adhesion on optically transparent surfaces is explored, as is water droplet dynamics on hydrophilic and hydrophobic surfaces, amongst other topics.
The book fills the gap between the physical fundamentals of surface energy and texture characteristics for practical applications of surface cleaning and provides a basic understanding of the self-cleaning of surfaces that will be idea for academics, researchers and students.
Chapter 1 INTRODUCTIOn
Chapter 2 Wetting Characteristics of Surfaces
2.1 INTRODUCTION
2.2 WETTING STATES AND PROPERTIES
2.2.1 Wetting on Smooth Surfaces
2.2.2 Wetting on Rough Surfaces
2.2.3 Contact Angle Hysteresis
2.2.4 Lubricant Impregnated Surfaces
2.2.5 Particle Adhesion on Surfaces
2.2.5.1 JKR (Johnson-Kandall-Roberts) Model
2.2.5.2 DMT (Derjagin, Muller, Toropov) Model
2.2.5.3 Hamaker’s model
2.2.5.4 Rumpf-Rabinovich model
2.3 DUST PARTICLES REMOVAL AND SURFACE CLEANING
2.3.1 Gravitational Force
2.3.2 Lift Force (inertial force and shear stress)
2.3.3 Drag Force due to Pressure and Shear on the particle Surface
2.3.4 Centrifugal Force
2.3.5 Friction Force
2.3 MEASUREMENTS AND ASSESSMENTS OF WETTING STATES
2.3.1. Smooth Surfaces
2.3.1.1 Drop Dimensions
2.3.1.2 Droplet free surface Profile
2.3.1.3 Axisymmetric Droplet Shape Analysis-Profile (ADSA-P)
2.3.1.4 Wilhelmy Method
2.3.1.5 Capillary Rise at a Vertical Plate
2.3.2 Rough Surfaces
2.3.2.1. Axisymmetric Droplet Shape Analysis Method -Diameter (ADSA-D)
2.3.2.2 Capillary Penetration Methods for particles
2.4 FREE ENERGIES OF SURFACES AND INTERFACES
2.5 SPREADING COEFFICIENT OF LIQUIDS
Chapter 3 Surfaces for Self-Cleaning
3.1 INTRODUCTION
3.2 SURFACE CHARACTERISTICS
3.3 DEVELOPMENT, SYNTHESIZING AND FABRICATION PROCESSES
3.3.1 Lithography
3.3.1.1 Conventional Lithography
3.3.1.1.1 Photolithography
3.3.1.1.2 Particle Beam Lithography
3.3.1.2 Unconventional Lithography
3.3.2 Templating
3.3.3 Etching
3.3.4 Coating
3.3.4.1 Spin Coating
3.3.4.2 Spray Coating
3.3.4.3 Dip Coating
3.3.5 Sol-Gel Method
3.3.6 Layer-by-Layer Fabrication
3.4 Analysis and Assessment
3.4.1 Oil Impregnated Hydrophobic Glass Surfaces in Relation to Self-Cleaning
3.4.2 Solvent Induced-Crystallization
3.4.3 Solvent-Induced Crystallization and Texture Copying by Polydimethylsiloxane
3.4.4 PDMS Replication of Laser Textured Surfaces
3.4.5 Laser Treatment of Zirconia Surfaces and Surface Hydrophobicity
Chapter 4 Environmental Dust on Surfaces
4.1 INTRODUCTION
4.2 CLASSIFICATION OF DUST PARTICLES
4.2.1 Dust Particle Size Distribution, Shapes and Analysis
4.2.2 Dust Particles Adhesion on Surfaces
4.2.3 Surface Energy and Cloaking of Dust Particles
4.3 CHEMO-MECHANICS OF MUD FORMED FROM DUST PARTICLES
4.3.1 Characteristics of Mud formed from Dust Particles
4.3.2 Mechanical Properties of Dry Mud
4.3.3 UV Visible Transmittance of Dusty and Dust Removed Surfaces
4.4 DUST ON OIL IMPREGNATED SURFACES
Chapter 5 Water Droplet Dynamics and Heat Transfer
5.1 INTRODUCTION
5.2 DROPLET ADHESION ON HYDROPHOBIC SURFACE AND THERMAL EFFECTS
5.2.1 Mechanics of Droplet Attachment on Hydrophobic Surface
5.2.2 Water Droplet Attachment on Hydrophobic Surface: Force Balance and Heating
5.3 DROPLET SLIDING AND ROLLING ON SURFACES
5.3.1 Experimental
5.3.2 Numerical Modelling of Droplet on Hydrophobic Surface
5.3.2.1 Initial Condition
5.3.2.2 Boundary Conditions
5.3.3 Findings of Experiments and Simulations
5.4 DROPLET DYNAMICS ON SURFACES WITH REVERSIBLY EXCHANGING WETTING STATES
5.4.1 Experimental
5.4.2 Surface Morphology and Reversible Wetting State on Surface
5.4.3 Water Droplet Dynamics on Solid Phase N-Octadecane Coated Hydrophobic Surface
5.5 DROPLET HEAT TRANSFER
5.5.1 Heat Transfer and Internal Fluidity of Droplet on Hydrophilic and Hydrophobic Surfaces
5.5.1.1 Initial Conditions
5.5.1.2 Boundary Conditions
5.5.1.3 Findings
5.5.2 Local Heating of Droplet by A Radiation Source
5.5.2.1 Heating and Flow Analysis
5.5.2.1.1 Initial Conditions
5.5.2.1.2 Boundary Conditions
5.5.2.2 Experimental and Validation of Flow Field Predictions
5.5.2.3 Findings
5.5.3 Droplet Heat Transfer on Hydrophobic Micro-Post Arrays
5.5.3.1 Flow and Heat Transfer Analysis
5.5.3.1.1 Initial Conditions
5.5.3.1.2 Boundary conditions
5.5.3.2 Experimental
5.5.3.3 Findings
5.5.4 Heating of a Ferro-Liquid Droplet Heat on Water Surface
5.5.4.1 Heating and Flow Analysis
5.5.4.1.1 Initial Condition
5.5.4.1.2 Boundary condition
5.5.4.2 Validation Study for velocity Field
5.5.4.3 Findings
CHAPTER 6 - DUST EFFECTS ON SURFACES IN HUMID ENVIRONMENT AND APPLICATIONS
6.1 INTRODUCTION
6.2 DUST AND MUD EFFECTS ON GLASS SURFACES
6.2.1 Experimental
6.2.2 Characteristics of Dry Mud and Its Influence on Glass Surfaces
6.3 MUD CHARACTERISTICS ON BISPHENOL-A POLYCARBONATE
6.3.1 Mud Formed from Dust Particles
6.3.2 Analysis of Mud Residues
6.3.3 Analysis of Mud Removal
6.3.4 Effect of Dried Solution
6.4 MUD EFFECT ON INCONEL 718 SURFACE
6.4.1 Experimental Analysis
6.4.2 Characteristics of Laser Treated Surface
6.4.3 Surface Hydrophobicity and Surface Free Energy
6.4.4 Dried Liquid Solution on Laser Textured Surface
6.5 DRY MUD EFFECT OF TIN COATED SURFACE
6.5.1 Laser Treated Surface and Mud Characteristics
6.5.2 Assessment of Surface Free Energy and Mud Adhesion
6.6 MUD EFFECTS ON ALUMINUM SURFACES
6.6.1 Experimental Analysis
6.6.2 Dry Mud Characterization on Aluminum Surface
6.6.3 Mechanical Properties of Dry Mud Solution on Aluminum
6.7 MUD EFFECT ON LASER TREATED ALUMINA SURFACE
6.7.1 Experimental Study
6.7.2 Morphological and Metallurgical Aspects of Surface Prior and After Mud Forming
6.7.3 Properties and Adhesion Work for Dry Mud Removal
6.7.4 Wetting State of Surface after Mud Removal
6.8 LASER TREATED AND SOL-GEL COATED ALUMINA SURFACE WITH MUD EFFECT
6.8.1 Experimental Analysis
6.8.2 Surface Characteristics of Laser Treated and Sol-Gel Coated Alumina Tiles
6.8.3 Laser Treated/Sol-Gel Coated Surfaces and Dry Mud Removal
CHAPTER 7 – Application of Water Droplet for Self-Cleaning of Surfaces7.1 INTRODUCTION
7.2 DUST PARTICLES REMOVAL THROUGH ROTATING DISC
7.2.1 Dynamics of Dust Particles on Rotating Disk
7.2.2 Experimental Analysis
7.2.3 Dynamic Analysis of Dust Particles on A Rotating Disk
7.3 DROPLET DYNAMICS AND DUST REMOVAL
7.3.1 Experimental and Texture Characteristics
7.3.2 Droplet Dynamics on Dusty Hydrophobic Surface
7.4 THERMOCAPILLARY EFFECT ON DUST REMOVAL FROM HYDROPHOBIC SURFACE
7.4.1 Formulation Numerical Analysis of Thermal and Flow Fields
7.4.2 Experimental and Validation of Predictions
7.4.3. Internal Fluidity of Sessile Droplet and Dust Particles
Chapter 8: Concluding Remarks
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