Fields, Forces and Flows in Biological Systems
Lecture Notes
| 
 LEC #  | 
 TOPICS  | 
 DETAILS  | 
| 
 Part 1: Fluids (Instructor: Prof. Scott Manalis)  | 
||
| 
 1  | 
 Introduction to the course Fluid 1: Introduction to fluid flow (PDF)  | 
 Logistics Introduction to the course Importance of being "multilingual" Complexity of fluid properties  | 
| 
 2  | 
 Fluid 2: Drag forces and viscosity  | 
 Fluid drag Coefficient of viscosity Newton's law of viscosity Molecular basis for viscosity Fluid rheology  | 
| 
 3  | 
 Fluid 3: Conservation of momentum  | 
 Fluid kinematics Acceleration of a fluid particle Constitutive laws (mass and momentum conservation)  | 
| 
 4  | 
 Fluid 4: Conservation of momentum (example)  | 
 Acceleration of a fluid particle Forces on a fluid particle Force balances  | 
| 
 5  | 
 Fluid 5: Navier-Stokes equation  | 
 Inertial effects The Navier-Stokes equation  | 
| 
 6  | 
 Fluid 6: Flows with viscous and inertial effects  | 
 Flow regimes The Reynolds number, scaling analysis  | 
| 
 7  | 
 Fluid 7: Viscous-dominated flows, internal flows  | 
 Unidirectional flow Pressure driven flow (Poiseuille)  | 
| 
 8  | 
 Fluid 8: External viscous flows  | 
 Bernoulli's equation Stream function  | 
| 
 9  | 
 Fluid 9: Porous media, poroelasticity  | 
 Viscous flow Stoke's equation  | 
| 
 10  | 
 Fluid 10: Cellular fluid mechanics (guest lecture by Prof. Roger Kamm)  | 
 How cells sense fluid flow  | 
| 
 Part 2: Fields (Instructor: Prof. Jongyoon Han)  | 
||
| 
 11  | 
 Field 1: Introduction to EM theory (PDF)  | 
 Why is it important? Electric and magnetic fields for biological systems (examples) EM field for biomedical systems (examples)  | 
| 
 12  | 
 Field 2: Maxwell's equations (PDF)  | 
 Integral form of Maxwell's equations Differential form of Maxwell's equations Lorentz force law Governing equations  | 
| 
 13  | 
 Quiz 1  | 
 
  | 
| 
 14  | 
 Field 3: EM field for biosystems (PDF)  | 
 Quasi-electrostatic approximation Order of magnitude of B field Justification of EQS approximation Quasielectrostatics Poisson's equation  | 
| 
 15  | 
 Field 4: EM field in aqueous media (PDF)  | 
 Dielectric constant Magnetic permeability Ion transport (Nernst-Planck equations) Charge relaxation in aqueous media  | 
| 
 16  | 
 Field 5: Debye layer (PDF)  | 
 Solving 1D Poisson's equation Derivation of Debye length Significance of Debye length Electroneutrality and charge relaxation  | 
| 
 17  | 
 Field 6: Quasielectrostatics 2 (PDF)  | 
 Poisson's and Laplace's equations Potential function Potential field of monopoles and dipoles Poisson-Boltzmann equation  | 
| 
 18  | 
 Field 7: Laplace's equation 1 (PDF)  | 
 Laplace's equation Uniqueness of the solution Laplace's equation in rectangular coordinate (electrophoresis example) will rely on separation of variables  | 
| 
 19  | 
 Field 8: Laplace's equation 2 (PDF)  | 
 Laplace's equation in other coordinates (solving examples using MATLABĀ®)  | 
| 
 20  | 
 Field 9: Laplace's equation 3 (PDF)  | 
 Laplace's equation in spherical coordinate (example 7.9.3)  | 
| 
 Part 3: Transport (Instructor: Prof. Scott Manalis)  | 
||
| 
 21  | 
 Transport 1  | 
 Diffusion Stokes-Einstein equation  | 
| 
 22  | 
 Transport 2  | 
 Diffusion based analysis of DNA binding proteins  | 
| 
 23  | 
 Transport 3  | 
 Diffusional flux Fourier, Fick and Newton Steady-state diffusion Concentration gradients  | 
| 
 24  | 
 Transport 4  | 
 Steady-state diffusion (cont.) Diffusion-limited reactions Binding assays Receptor ligand models Unsteady diffusion equation  | 
| 
 25  | 
 Transport 5  | 
 Unsteady diffusion in 1D Equilibration times Diffusion lengths Use of similarity variables  | 
| 
 26  | 
 Transport 6  | 
 Electrical analogy to understanding cell surface binding  | 
| 
 27  | 
 Quiz 2  | 
 
  | 
| 
 28  | 
 Transport 7  | 
 Convection-diffusion equation Relative importance of convection and diffusion The Peclet number Solute/solvent transport Generalization to 3D  | 
| 
 29  | 
 Transport 8  | 
 Guest lecture: Prof. Kamm Transendothelial exchange  | 
| 
 30  | 
 Transport 9  | 
 Solving the convection-diffusion equation in flow channels Measuring rate constants  | 
| 
 Part 4: Electrokinetics (Instructor: Prof. Jongyoon Han)  | 
||
| 
 31  | 
 EK1: Electrokinetic phenomena  | 
 Debye layer (revisit) Zeta potential Electrokinetic phenomena  | 
| 
 32  | 
 EK2: Electroosmosis 1 (PDF)  | 
 Electroosmotic flow Electroosmotic mobility (derivation)  | 
| 
 33  | 
 EK3: Electroosmosis 2 (PDF)  | 
 Characteristics of electroosmotic flow Applications of electroosmotic flow  | 
| 
 34  | 
 EK4: Electrophoresis 1  | 
 Electrophoretic mobility Theory of electrophoresis  | 
| 
 35  | 
 EK5: Electrophoresis 2 (PDF)  | 
 Electrophoretic mobility of various biomolecules Molecular sieving  | 
| 
 36  | 
 EK6: Dielectrophoresis (PDF)  | 
 Induced dipole (from part 2) C-M factor Dielectrophoretic manipulation of cells  | 
| 
 37  | 
 EK7: DLVO (PDF)  | 
 Problem of colloid stability Inter-Debye-layer interaction  | 
| 
 38  | 
 EK8: Forces  | 
 Van der Waals forces Colloid stability theory  | 
| 
 39  | 
 EK9: Forces  | 
 Summary of the course/evaluation  | 
Assignments
This page presents a few representative problem sets.
Problem Set 1 (PDF) - due at Ses# L5 (Fluid 5: Navier-Stokes equation)
Problem Set 4 (PDF) - due at Ses# L17 (Field 6: Quasielectrostatics 2)
Problem Set 10 (PDF) - due at Ses# L37 (EK7: DLVO)
Study Materials
Fluids Tutorial: Curl Divergence (PDF)
Fields Tutorial: FEMLAB Demo (PDF)
Final Exam Equations Sheet (PDF)
                                                                                                                        
 
