Mohraz LabColloid Science and Complex Fluids Engineeringmohraz@uci.eduhttp://csl.eng.uci.edu

Research Summary: The Colloid Science Laboratory at UC Irvine investigates a range of fundamental and applied problems related to the physics and engineering of soft materials, colloidal dispersions, and complex fluids. Using state-of-the-art experimental techniques, our goal is to gain a more thorough understanding of how the interparticle interactions, particle geometry, and the suspension physicochemical conditions can be exploited to engineer novel micro- and nanostructured materials from multiphase colloidal suspensions. The applications of our research are broad, ranging from nano-structured composites for fuel cells and batteries to pharmaceutical formulations, coatings, personal care products, foods, and oil industries. Current areas of focus are:

• Microstructural determinants of nonlinear rheology in colloidal gels and glasses.

• Self-assembly and dynamics of colloidal particles at fluid/fluid interfaces.

• Rheology of structured fluids in confinement.• Interfacial routes to microstructured materials synthesis.

Key Publications:• Lee, M.N.; Chan, H.K.; Mohraz, A; Characteristics of

Pickering Emulsion Gels Formed by Droplet Bridging, Langmuir, DOI: 10.1021/la203384f (2012) (Cover Article)

• Rajaram, B; Mohraz, A, Dynamics of shear-induced yielding and flow in dilute colloidal gels, Physical Review E 84, 1, Art. No. 011405 (2011)

• Lee, M.N.; Mohraz, A, Hierarchically Porous Silver Monoliths from Colloidal Bicontinuous Interfacially Jammed Emulsion Gels, J. American Chemical Society 133, 18, 6945-6947 (2011)

• Lee, M.N.; Mohraz, A, Bicontinuous Macroporous Materials from Bijel Templates, Advanced Materials 22, 4836-4841 (2010) (Inside Cover Article)

• Rajaram, B; Mohraz, A, Microstructural Response of Dilute Colloidal Gels to Nonlinear Shear Deformation, Soft Matter 6, 2246-2259 (2010)

• Pickrahn, K; Rajaram, B; Mohraz, A, Relationship between Microstructure, Dynamics, and Rheology in Polymer-Bridging Colloidal Gels, Langmuir 26, 4, 2392-2400 (2010)

Prof. Ali MohrazAssistant Professor

• B.S. Chemical Engineering, Azad University (1996)

• M.E. Chemical Engineering, The City University of New York (1999)

• Ph.D. Chemical Engineering, The University of Michigan, Ann Arbor (2004)