aomar_2020_crop

Assistant Professor, Materials Science and Engineering (Beginning Fall 2021)

225 Hearst Memorial Mining Building
Berkeley, CA 94720-1760

Email: aomar@berkeley.edu
Research Website: omar.berkeley.edu

Research:

Our research aims to advance our theoretical understanding of both natural and synthetic soft condensed matter systems. We leverage the tools of statistical mechanics, continuum mechanics and computer simulation to bridge microscopic details with the emergent properties and phenomena displayed by these systems. Our current interests are diverse – ranging from the nonequilibrium phase behavior and dynamics of active colloids and driven polymers to understanding the self-assembly pathways of complex phases. The unifying theme in these seemingly disparate areas is the significance of both conservative and nonconservative (e.g., hydrodynamic, active) forces in shaping the underlying dynamic landscape and material properties. We endeavor to investigate this interplay of thermodynamic and dissipative forces by utilizing and devising simulation and analytical techniques at the coarse-grained length and time scales of interest. Moreover, we aim to study systems that have clear connections to experiments and venture to make meaningful and experimentally verifiable predictions.

Selected Publications:

A. K. Omar, Z.-G. Wang and J. F. Brady, Microscopic Origins of the Swim Pressure and the Anomalous Surface Tension of Active Matter. Phys. Rev. E, 101, 012604 (2020)

A. K. Omar, Y. Wu, Z.-G. Wang and J. F. Brady, Swimming to Stability: Structural and Dynamical Control via Active Doping. ACS Nano, 13, 560 (2019)

P. B. Rapp*, A. K. Omar*, B. Silverman, Z.-G. Wang, and D. A. Tirrell. Mechanisms of Diffusion in Associative Polymer Networks: Evidence for Chain Hopping. J. Am. Chem. Soc., 140, 14185 (2018)

A. K. Omar and Z.-G. Wang, Shear-Induced Heterogeneity in Associating Polymer Gels: Role of Network Structure and Dilatancy. Phys. Rev. Lett., 119, 117801 (2017)