Seminar: R. Sureshkumar, Syracuse University
Title: Structure, Dynamics and Rheology of Self-Assembled Fluids: Coarse-Grained Molecular Dynamics Simulations."
Coarse-grained molecular dynamics simulations are used to explore self-assembly and dynamics of aqueous solutions of surfactants, nanoparticles, and lipids. The simulations allow for explicit representation of salt and water mediated intermolecular interactions. In this presentation, simulation methods will be described. Subsequently, the applications of such simulations to study dynamics and rheology of surfactant micelles, micelle-nanoparticle complexes, and lipid lamellae will be discussed. This will include: (i). salt-induced shape transitions of micelles, (ii). inter-micelle interactions, (iii). length distributions, scission and recombination, branching, stress relaxation mechanisms and anomalous salt-induced viscosity variations in cylindrical and wormlike micelles, (iv). rupture of wormlike micelles in shear and extensional flows, (v). structure and rheology of micelle-nanoparticle complexes, and (vi). shear-induced instabilities of lipid lamellae.
- A. Sambasivam et al., Molecular Simulation, 44, 485-493 (2018); Langmuir, 32, 1214−19 (2016); Phys. Rev. Lett., 114, 158302 (2015)
- S. Dhakal & R. Sureshkumar, Phys. Rev. E., 96, 012605 (2017); ACS Macro Letters, 5, 108-11 (2016); J. Chem. Phys., 143, 024905 (2015)
- A. Sangwai & R. Sureshkumar, Langmuir, 28(2), 1127–1135 (2012); Langmuir, 27 (11), 6628–6638 (2011)
Sureshkumar is Distinguished Professor of Chemical Engineering at Syracuse University (SU). He also served as the Chair of SU’s Department of Biomedical and Chemical Engineering from January 2010 to May 2019. Prior to joining SU, he was Professor of Chemical Engineering at Washington University, which he joined in 1997 after completing post-doctoral research at the Massachusetts Institute of Technology. He has also held visiting faculty appointments at University of Michigan, University of Edinburgh, and Rice University. He is a graduate of Indian Institute of Technology, Madras (baccalaureate), SU (master’s), and University of Delaware (PhD). To date, he has mentored 22 PhDs, 8 post-doctoral researchers, 7 master’s graduates, and numerous undergraduate researchers. Sureshkumar is co-author of well over 100 refereed publications.
Thursday, November 7, 2019 at 3:30pm to 4:30pm
Science and Engineering Research Facility (SERF), 307
1414 Circle Dr, Knoxville, TN 37996