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Instability and Patterning of Thin Polymer Films

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  • Course Description

    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. State of art concepts like "patterns on demand", "reconfigurable structures", "patterning beyond the master', "patterning of non planar surfaces", "pattern miniaturization by shrinkage" etc. will also be covered in the course. Contents: General Introduction to Patterning; Lithography Techniques, Applications of Patterned thin films. Classification of Patterning Techniques: Top Down, Bottom up, combined techniques; Serial vs. Parallel Techniques. Soft Lithography: basics, key concepts, major techniques - Micro Contact Printing, Nano imprint Lithography, Hot Embossing, Replica Molding (REM), Micro Molding in Capillaries (MIMIC), Capillary Force Lithography (CFL), Polymer Bonding Lithography; Patterning of films coated on Curved Surfaces. Soft Lithography for patterning of inorganic (sol-gel) thin films and Hydrogels. Hydrodynamics of a free surface, Capillarity, Physical origin of Instability, Wetting and dewetting, Length Scales Analysis, Pattern Formation. Ordered pattern formation by template guided and confined dewetting, Dewetting of Bilayers Elastic Contact Instability: concepts, governing equations, Elastic contact Lithography, Pattern Miniaturization in Bilayers, Adhesive Force Assisted Imprinting. Electric Filed and Thermal gradient induced patterning, Electrohydrodynamics, LISA (Lithographically Induced Self Assembly). Stress Engineering. Multi scale patterning. Applications of Patterned Thin Films: Super Hydrophobic and Super Wetting Surfaces, Structural Color, Super Adhesives and Easy Release Coatings, Micro Fluidics etc.

    About Dr. R. Mukherjee

    Note: Contents for this page are Licensed from http://nptel.iitm.ac.in/ under the Creative Commons Attribution Share-Alike license.

  • S.No

    Topics

    No. of Hours

    1

    Introduction to the Topic.

    1

    2

    1. Different Concepts of Patterning.

    2. Top Down and Bottom up Techniques.

    3. Serial vs. Parallel Techniques.

    4. Basics of Photolithography.

    2

    3

    Introduction to Soft Lithography.

    1

    4

    1. Different Soft Lithography Techniques.

    2. Nano Imprint Lithography, Micro Contact  Printing, REM, MIMIC, CFL etc.

    7

    5

    Soft Lithographic Patterning of Curved Surfaces.

    1

    6

    Soft Lithography on Inorganic Gels and Hydrogels.

    1

    7

    Hydrodynamics of a Free Surface, Capillarity, Length Scale Analysis.

    6

    8

    Dewetting based patterning.

    1

    9

    Pattern Directed and Confined Dewetting.

    3

    10

    Dewetting of Bilayers.

    2

    11

    Contact Instability in Elastic Films, Surface Evolution, Morphological
    Transformation of Patterns.

    3

    12

    Elastic Contact Lithography.

    2

    13

    Pattern Miniaturization with Elastic Bilayers.

    1

    14

    Adhesive Force assisted Imprinting.

    1

    15

    Fundamentals of Electrohydrodynamics.

    1

    16

    Electric Field induced patterning, length scale, Pattern morphology control, Bilayers.

    4

    17

    Stress Induced Patterning, Spontaneous Wrinkles Creation of Fractals.

    2

    18

    Specific Applications of Patterned Surfaces: -

     

    Super Wetting, Super Hydrophobicity.

    1

    Super Adhesive, Easy Release Coating.

    1

    Patterned Surface in Microfluidics, Lab on a Chip.

    1

    Structural Colors and other applications.

    1

    Total

    43

  • Lectures
    Instability and Patterning of Thin Polymer Films - Lecture 1 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 2 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 3 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 4 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 5 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 6 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 7 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 8 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 9 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 10 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 11 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 12 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 13 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 14 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 15 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 16 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 17 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 18 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 19 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 20 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 21 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 22 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 23 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 24 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 25 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 26 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 27 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 28 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 29 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 30 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 31 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 32 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 33 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 34 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 35 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 36 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 37 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 38 - Dr. R. MukherjeeView
    Instability and Patterning of Thin Polymer Films - Lecture 39 - Dr. R. MukherjeeView
  • DescriptionTypeLink
    IntroductionDownloadClick
    Fundamental Concepts Related to Surface and Surface TensionDownloadClick
    Meso Scale Fabrication Approaches and Self AssemblyDownloadClick
    Photo LithographyDownloadClick
    Nano Imprint LithographyDownloadClick
    Soft lithographyDownloadClick
    Atomic Force MicroscopeDownloadClick
    Intermolecular Forces between Particles and SurfacesDownloadClick
    Spontaneous instability & Dewelting of Thin Polymer FilmDownloadClick
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