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Contact Information

Email: Click to Mail

Phone: (805) 893-7383

Fax: (805) 893-4731

Office Location: 3347 Engineering II

Address: Mail Code 5080
Chemical Engineering Dept.
University of California
Santa Barbara,
CA 93106-5080 USA

Assistant Information

Name: Debbie Watts

Phone: (805) 893-8692

Fax: (805) 893-4731

Web Pages

Research Group Home Page

Course Pages

ChE 120B Transport Processes - Heat Transfer

ChE 220A Advanced Transport Processes

ChE 220B Advanced Transport Processes

ChE 230B Advanced Theoretical Methods in Engineering

ChE 120A Transport Processes

Education & Honors

BS: Physics (& BA, Russian Language & Lit), UCLA, 1995

PhD: Physics, Harvard, 2002

Honors: 2013 Mid-Career Award, American Electrophoresis Society
2012 The Dudley Saville Memorial Lecture at Princeton
2010 Pierre Gilles de Gennes Prize
2010 Allan P. Colburn Memorial Lectureship, U of Delaware
2009 Francois Frenkiel Award for Fluid Mechanics
2009 Camille Dreyfus Teacher-Scholar Award
2008 Beckman Young Investigator
2007 NSF CAREER Award
2005 'Rising Star' - Chronicle of Higher Education


Transport science plays a role in all things dynamical - and can often play the crucial role. As such, it is an extremely versatile science. Learning to think effectively about fluids and transport enables one to understand and contribute to a wide range of interesting and important problems. Our group works various areas of micro-scale fluid mechanics and transport science - microfluidics and electrokinetics, active, nonlinear and interfacial microrheology of complex materials, polymer dynamics and sensors. Current theoretical and experimental projects include (i) non-linear (induced-charge) electrokinetic flows, with an eye towards portable, self-contained and implantable microfluidic devices, (ii) extending the capabilities of "microrheology" (which typically uses colliodal beads as passive tracers to measure the rheological properties of complex materials) by using active forcing to extract nonlinear material response properties; (iii) developing and employing a novel technique for measuring the rheology of fluid-fluid interfaces, with particular emphasis on natural and synthetic lung surfactant layers (in collaboration with Zasadzinski's group) and surfactant-laden polymer-polymer interfaces; (iv) theoretical and experimental investigations into interfacial mobility of nanoparticle and copolymer surfactants (collaboration with Leal and MRL), and (v) understanding the self-assembly and transport properties of nanostructured materials, with applications in ultracapacitors for energy storage (collaboration with Chmelka). This is a wide range of topics, loaded with interesting and important questions - underscoring the versatility of this fascinating field.


Online Publication List

J. S. Paustian, R. Nery Azevedo, S. T. B. Lundin, M. J. Gilkey, and T. M. Squires, Microfluidic microdialysis: spatio-temporal control over solution micro-environments using integrated hydrogel membrane microwindows, Phys. Rev. X 3, 041010 (2013)

S. Q. Choi, A. J. Pascall, and T. M. Squires, Active microrheology and simultaneous visualization of sheared phospholipid monolayers, Nature Communications, 2, 312 (2011).

A.J. Pascall and T.M. Squires, Induced-charge electro-osmosis over controllably contaminated electrodes, Phys. Rev. Lett, 104, 088301 (2010)

T.M. Squires and T.G. Mason, The fluid mechanics of microrheology, Ann. Rev. Fluid Mech., 42, 413-438 (2010)

A.S. Khair and T.M. Squires, The influence of hydrodynamic slip on the electrophoretic mobility of a spherical colloidal particle, Phys. Fluids, 21, 042001 (2009)

T.M. Squires, R.J. Messinger, and S.R. Manalis, Making it Stick: convection, reaction and diffusion in surface-based biosensors, Nature Biotechnology, 26, 417 (2008)

T.M. Squires and S.R. Quake, Microfluidics: fluid physics on the nanoliter scale, Reviews of Modern Physics 77, 977-1026 (2005)

T.M. Squires and M.Z. Bazant, Induced charge electro-osmosis, Journal of Fluid Mechanics 509, 217-252 (2004)