Current  courses

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1. Instructor of "Corrosion and degradation of materials", UG 3rd year course

2. Instructor of "Surface Engineering", UG elective

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​Courses taught and assisted previously

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1. Instructor and tutor to, "Introduction to Materials (ES 202)", UG 2nd year course, (Aug-Nov 2022)

2. Instructor to "Surface Engineering (MSE 355)", UG elective, (Aug-Nov 2022)

3. Instructor of "Corrosion and degradation of materials", UG 3rd year course, (Jan-April 2022)

4. Tutor to "Fluid Mechanics (ES 212)", (Jan-April 2022)

5. Introduction to Materials Science (ES 202), co-instructor. (Jan-April 2021)

6. Fluid Mechanics (ES 212), tutor. (Jan-April 2021)

7. Instructor of "Surface Engineering", UG elective, Aug-Nov, 2020, IIT Gandhinagar

8. Instructor of " Transport Phenomena in Materials Engineering", Jan-May 2020, IIT Gandhinagar

9. Tutor to the “Fluid Mechanics” undergraduate course for Jan-May 2020, IIT Gandhinagar

10. Teaching assistant to “Chemistry of surfaces” taught by Prof. Patrik Hoffmann at EPFL from Feb-June 2012; 2013 (2 semesters). Feb-June 2012,  Feb-June 2013

 

 

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Developed course contents

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1. Surface Engineering MSE 355

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Time: Semester-I (2020-2021)

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Course Contents:

 

• Fundamentals on surface energy, surface tension, polar and apolar materials, viscosity, vapor pressure, enthalpy of vaporization

• Surface properties: roughness, flatness, topography, chemical composition/surface chemistry, bond structure

• Introduction to wetting, tribology, capillarity and biofouling

• Types of fluids: pure liquids, emulsions, suspensions, Newtonian & non-Newtonian, biological and classification of real-life fluids such as blood, paints, ketchup, oil, yogurt etc.

• Theories: Young’s equation, Wenzel theory, Cassie-Baxter theory, Zisman plot, van Oss-Chaudary-Good theory, Gibbs free energy minimization, van der Waals forces namely Debye, Keesom, London forces as well as hydrogen bonding

• Surface modifications by chemical ways: dip coating, spraying, sputtering, silanization treatments, carburizing, nitriding, physical vaporization deposition, chemical vaporization method etc.

• Engineering surface topography: micromachining, e- beam lithography, photolithography, laser ablation, chemical etching, curing, replication, hot embossing etc.

• Surface characterization techniques: SEM, CA goniometer, AFM, optical profilometer, frictional measurements-oscillating tribometer, sphere on disc and pin on disc, Nanoindentation

• Bioinspired strategies for tuning surface adhesion: Lotus leaf effect, butterfly surfaces, rose petals, Nepenthes Pitcher plant, gecko-lizard, underwater oleophobicity by fish scales

• Tribology: Stribeck curve, lubrication, influence of viscosity, load, sliding speed on dry and lubricated friction and wear of materials. Archard’s wear principle and wear mechanisms

• Applications and emerging challenges

 

 

Reference and reading materials:

 

1. A textbook by William A. Zisman entitled “Contact Angle, Wettability, and Adhesion”, Advances in Chemistry, 1963, American Chemical Society. E-book

2. A textbook by Prof. Jacob N. Israelachvili, University of California Santa Barbara, entitled “Intermolecular and Surface Forces”

3. A textbook titled “Capillarity and Wetting Phenomena: Drops, Bubbles, Pearls, Waves” by Pierre-Gilles de Gennes, Françoise Brochard-Wyart, David Quéré

4. Textbook by Ian M. Hutchings, “Tribology: Friction and Wear of Engineering Materials”

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2. Transport Phenomena in Materials Engineering (MSE 311)

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Time: Taught during semester-II (2019-2020)

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Course Contents:

 

• Introduction to transport phenomena

• Concepts of fluid flow and momentum transfer

• Newton’s law of viscosity and Non-Newtonian fluids with examples from real-life

• Continuity equation, applications of Navier-Stokes equation, Bernoulli’s theorem

• Laminar flow, Turbulent flow, concept of friction factor, fluidized bed

• Concepts on Mass transport: Fick’s law of diffusion, mass transfer coefficient

• Concepts on heat transport: heat conduction, Fourier’s law, steady and unsteady state conduction, convection, heat transfer coefficient, radiation

• Applications in macro and micro scale devices and materials processing such as in oil refineries, human body, solidification, casting, heat losses from the furnace, alloy homogenization, segregation, oxidation, reduction, microfluidics, cooling in electronic devices, flow and vacuum production etc.

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References and reading materials:

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1.  “Transport Phenomena in Materials Processing”, G.H. Geiger and D.R. Poirier, TMS, 1984.

2. “Transport Phenomena”, R. Byron Bird, warren E. Stewart and Edwin N. Lightfoot, John Wiley, 2001.

3. “An Introduction to Transport Phenomena in Materials Engineering (2nd edition)”, David R. Gaskell, Momentum press, LLC, New Jersey, 2013.

4. “Basic Transport Phenomena in Materials Engineering”, Manabu Iguchi and Olusegun J. Ilegbusi, Springer, 2014.

5. “Fundamentals of Heat and Mass Transfer”, Theodore L. bergman, Adrienne S. Lavine, Frank P. Incropera and David P. Dewitt, John Wiley & Sons 2011