# Colloids and Surfaces - Institution: IIT Madras - Department: Chemical Engineering - Teacher: Prof. Basavaraj Madivala Gurappa - Level: Undergraduate - Language: English - Subjects: Chemistry, Engineering - Source: [NPTEL](https://nptel.ac.in/courses/105106204) - Licence: [CC BY-NC-SA](https://nptel.ac.in/faq) (Non-commercial use only.) - Syllabus: [at the source](https://nptel.ac.in/courses/105106204) - Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words) This course introduces the fundamentals of colloids and nanoparticle science, wherever possible applications of these concepts will be discussed. Intended audience: B.E/M.E/M.Tech/Ph.D ## Lectures 1. [Introduction and motivation](https://invisiblenetwork.ai/learn/nptel/105106204/daac4e00e75e) (YouTube) 2. [Colloidal dispersions, terminology and classification](https://invisiblenetwork.ai/learn/nptel/105106204/9474d9fb42da) (YouTube) 3. [Stability in colloids](https://invisiblenetwork.ai/learn/nptel/105106204/5facf5832a68) (YouTube) 4. [Source, synthesis and characterisation of colloids](https://invisiblenetwork.ai/learn/nptel/105106204/26752881a066) (YouTube) 5. [Characterisation of colloidal particles - I](https://invisiblenetwork.ai/learn/nptel/105106204/154411972bc2) (YouTube) 6. [Characterisation of colloidal particles - II](https://invisiblenetwork.ai/learn/nptel/105106204/4b9d188c0d25) (YouTube) 7. [Introduction to forces acting on an individual colloidal particle](https://invisiblenetwork.ai/learn/nptel/105106204/50c09a44f380) (YouTube) 8. [Introduction to interaction between colloidal particles](https://invisiblenetwork.ai/learn/nptel/105106204/92308c871abc) (YouTube) 9. [Application of Brownian force: Measument of diffusivity and size](https://invisiblenetwork.ai/learn/nptel/105106204/342ae889f37a) (YouTube) 10. [Origin of scattering](https://invisiblenetwork.ai/learn/nptel/105106204/844f7042f222) (YouTube) 11. [Radiation used to study colloidal systems](https://invisiblenetwork.ai/learn/nptel/105106204/447bd926b751) (YouTube) 12. [Molecular origin of Van der waals forces](https://invisiblenetwork.ai/learn/nptel/105106204/5568adf382fe) (YouTube) 13. [Vanderwaal interactions between particles](https://invisiblenetwork.ai/learn/nptel/105106204/6142b5c46e62) (YouTube) 14. [Problem on scaling of Vanderwaal interactions](https://invisiblenetwork.ai/learn/nptel/105106204/7dabc03cbdc9) (YouTube) 15. [Calculation of Vanderwaal's forces between semi-infinite blocks and Hamaker constant - I](https://invisiblenetwork.ai/learn/nptel/105106204/e4a3de9bb2c6) (YouTube) 16. [Calculation of Vanderwaal's forces between semi-infinite blocks and Hamaker constant - II](https://invisiblenetwork.ai/learn/nptel/105106204/f2c772b71354) (YouTube) 17. [Theories of Vanderwaal forces based on bulk properties and calculation of Hamaker constant using bulk properties](https://invisiblenetwork.ai/learn/nptel/105106204/4e628f400090) (YouTube) 18. [Effect of medium on Vanderwaal's interactions - I](https://invisiblenetwork.ai/learn/nptel/105106204/47c59e35e830) (YouTube) 19. [Effect of medium on Vanderwaal's interactions - II](https://invisiblenetwork.ai/learn/nptel/105106204/934b63ed6b50) (YouTube) 20. [Colloid Polymer mixtures](https://invisiblenetwork.ai/learn/nptel/105106204/2490551debe0) (YouTube) 21. [Colloid polymer mixtures: colloid-solvent interactions & colloid-polymer interactions](https://invisiblenetwork.ai/learn/nptel/105106204/f1cd04daf11b) (YouTube) 22. [Colloid polymer mixtures: Depletion flocculation](https://invisiblenetwork.ai/learn/nptel/105106204/64247b6c8910) (YouTube) 23. [Colloid polymer mixtures: Depletion stabilisation](https://invisiblenetwork.ai/learn/nptel/105106204/8139edc432cf) (YouTube) 24. [Depletion interactions](https://invisiblenetwork.ai/learn/nptel/105106204/14ad20a47d27) (YouTube) 25. [Steric interactions/osmotic repulsion](https://invisiblenetwork.ai/learn/nptel/105106204/7fe5f0b61c05) (YouTube) 26. [Tutorial problem on depletion interactions](https://invisiblenetwork.ai/learn/nptel/105106204/a7bc8ec4fe80) (YouTube) 27. [Colloidal Interactions: Introduction to electrostatic interactions/electrical double layer interactions](https://invisiblenetwork.ai/learn/nptel/105106204/a6b4a44ddd96) (YouTube) 28. [Introduction to models of electrical double layer: Helmholtz model/capacitor model](https://invisiblenetwork.ai/learn/nptel/105106204/83b3ec5ed261) (YouTube) 29. [Review and summary of Helmholtz model (or capacitor model) of electrical double layer](https://invisiblenetwork.ai/learn/nptel/105106204/5a53ea581e1b) (YouTube) 30. [Models of electrical double layer: Diffuse double layer model/Gouy-Chapman model](https://invisiblenetwork.ai/learn/nptel/105106204/747e273021f7) (YouTube) 31. [Potential distribution near planar surfaces: Derivation of the Poisson-Boltzmann equation](https://invisiblenetwork.ai/learn/nptel/105106204/58c0050a9961) (YouTube) 32. [Potential distribution near planar surfaces: Solution to the linearised Poisson-Boltzmann equation](https://invisiblenetwork.ai/learn/nptel/105106204/b11bbe2f35be) (YouTube) 33. [Potential distribution near spherical surfaces: Solution to linearised Poisson-Boltzmann equation](https://invisiblenetwork.ai/learn/nptel/105106204/bfd0bb6cd791) (YouTube) 34. [Comparison of Capacitor model and Diffuse double layer model](https://invisiblenetwork.ai/learn/nptel/105106204/de1215bd50ad) (YouTube) 35. [Models of electrical double layer: Gouy Chapman Theory - I](https://invisiblenetwork.ai/learn/nptel/105106204/a44c110daff5) (YouTube) 36. [Models of electrical double layer: Gouy Chapman Theory - II](https://invisiblenetwork.ai/learn/nptel/105106204/ff4547f0f7d0) (YouTube) 37. [Structure of Electrical double layer](https://invisiblenetwork.ai/learn/nptel/105106204/90b2a2c60b13) (YouTube) 38. [Force of Repulsion between interacting surfaces](https://invisiblenetwork.ai/learn/nptel/105106204/c03fb583e0e3) (YouTube) 39. [Potential Energy of repulsion between Planar double layers and DLVO Theory](https://invisiblenetwork.ai/learn/nptel/105106204/d9487a6d47d8) (YouTube) 40. [Zeta Potential and Electrophoretic mobility of an ion](https://invisiblenetwork.ai/learn/nptel/105106204/af6e637d7eef) (YouTube) 41. [Electrokinetic Phenomena](https://invisiblenetwork.ai/learn/nptel/105106204/2c807404526b) (YouTube) 42. [Relation between Electrophoretic mobility and Zeta potential - I](https://invisiblenetwork.ai/learn/nptel/105106204/4a96e532f70e) (YouTube) 43. [Relation between Electrophoretic mobility and Zeta potential - II](https://invisiblenetwork.ai/learn/nptel/105106204/a14ea3a71edf) (YouTube) 44. [Colloidal particles at interfaces:Introduction](https://invisiblenetwork.ai/learn/nptel/105106204/edeaa8eb500b) (YouTube) 45. [Characterization of Particles at interface](https://invisiblenetwork.ai/learn/nptel/105106204/44e8cc434d33) (YouTube) 46. [Experimental Observations -Concept of Electrostatic interactions and Stability at interfaces](https://invisiblenetwork.ai/learn/nptel/105106204/0fe8580ab607) (YouTube) 47. [Implications from Surface energy balances & Estimation of energy required for detachment](https://invisiblenetwork.ai/learn/nptel/105106204/1699495b08c1) (YouTube) 48. [Colloidal interactions at interface](https://invisiblenetwork.ai/learn/nptel/105106204/3561b6a7b285) (YouTube)