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September 23, 2023


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Instability and Patterning of Thin Polymer Films. Instructor: Prof. R. Mukherjee, Department of Chemical Engineering, IIT Kharagpur.

This course will expose students to the science of sub-micron, meso and nanoscale patterning of surfaces with special emphasis on thin soft films like gels, polymers etc. The course will focus on the different classes of thin film patterning techniques like the top down techniques (lithography), bottom up techniques (self assembly and self organization) as well as combination of the two (confined and template guided self organization) as well as focus on various engineering applications of the patterned thin films like super wetting and super hydrophobicity, structural color, metamaterials, super adhesives and easy release coatings, microfluidics etc. The course will be expose the students to the various soft lithography techniques and will focus on how hydrodynamics and capillarity plays and intriguingly critical role in evolution and pattern formation. (from nptel.ac.in)

Course Curriculum

    • Lecture 01 – Introduction: Patterns Unlimited
    • Lecture 02 – Applications of Patterned Surfaces, Introduction to Instability Unlimited
    • Lecture 03 – Some Fundamental Surface Related Concepts Unlimited
    • Lecture 04 – Surface Tension (in terms of Molecular Interactions) Unlimited
    • Lecture 05 – Effect of Surface Tension: Laplace Pressure Unlimited
    • Lecture 06 – Young-Laplace Equation Unlimited
    • Lecture 07 – Rayleigh Instability Unlimited
    • Lecture 08 – Meso Scale Fabrication Approaches Unlimited
    • Lecture 09 – Photolithography Processes: Wafer Cleaning, Photoresist Processing Unlimited
    • Lecture 10 – Photoresist Processing: Photoresist, Dehydration and Priming, Resist Coating Unlimited
    • Lecture 11 – Spin Coating, Soft Baking, Photo Mask Unlimited
    • Lecture 12 – Photolithography Processes: Mask Alignment, Exposure, Development Unlimited
    • Lecture 13 – Photolithography Processes: Development, Hard Bake, Etching, Resist Strip Unlimited
    • Lecture 14 – Nano Imprint Lithography Unlimited
    • Lecture 15 – Nano Imprint Lithography (cont.) Unlimited
    • Lecture 16 – Soft Lithography: Basics and Key Concepts Unlimited
    • Lecture 17 – Soft Lithography Stamp, Dust on Film Surface, Pattern Replication Mechanism Unlimited
    • Lecture 18 – Soft Lithography Techniques: Replica Molding, Micromolding in Capillaries Unlimited
    • Lecture 19 – MIMIC (cont.), Solvent Assisted Micromolding, Capillary Force Lithography Unlimited
    • Lecture 20 – Capillary Force Lithography (cont.) Unlimited
    • Lecture 21 – Step-Flash Imprint Lithography, Microcontact Printing Unlimited
    • Lecture 22 – Scanning Probe Microscopes, Scanning Tunneling Microscope, Atomic Force Microscope Unlimited
    • Lecture 23 – Major Components of an AFM: Probes or Tips, Photodetector Unlimited
    • Lecture 24 – Photodetector (cont.), Operational Aspects: Alignment and Approach Unlimited
    • Lecture 25 – Scanning Modes: Contact Mode, Non-contact Mode, Intermittent Contact Mode Unlimited
    • Lecture 26 – AFM: Beyond Topographic Imaging Unlimited
    • Lecture 27 – Intermolecular Forces between Particles and Surfaces Unlimited
    • Lecture 28 – Potential Energy of Interaction between Two Blocks Unlimited
    • Lecture 29 – Self Interaction, Excess Free Energy of a Film Unlimited
    • Lecture 30 – Pure Van der Waals Interaction, Attractive Interfacial Interaction, Derjaguin Approximation Unlimited
    • Lecture 31 – Spontaneous Instability and Dewetting of Thin Polymer Film I Unlimited
    • Lecture 32 – Spontaneous Instability and Dewetting of Thin Polymer Film II Unlimited
    • Lecture 33 – Spontaneous Instability and Dewetting of Thin Polymer Film III Unlimited
    • Lecture 34 – Spontaneous Instability and Dewetting of Thin Polymer Film IV Unlimited
    • Lecture 35 – Spontaneous Instability and Dewetting of Thin Polymer Film V Unlimited
    • Lecture 36 – Spontaneous Instability and Dewetting of Thin Polymer Film VI Unlimited
    • Lecture 37 – Spontaneous Instability and Dewetting of Thin Polymer Film VII Unlimited
    • Lecture 38 – Template Guided Dewetting Unlimited
    • Lecture 39 – Elastic Contact Instability and Lithography Unlimited
    • Lecture 40 – Gradient Surfaces Unlimited

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