California NanoSystems Institute
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Thomas G. Mason, Ph.D.

Professor, Physical Chemistry, Physics and Astronomy

Ph.D., Princeton University, 1995
M.A., Princeton University, 1991
B.S., University of Maryland, 1989
B.S., University of Maryland, 1989

Academic Experience:
NSF, Graduate Research Fellow
Exxon, Graduate Research Fellow

Honors and Awards:
Herbert Newby McCoy Award for Research Excellence
American Physical Society DFD, Gallery of Fluid Motion Award
Intel New Faculty Award
Princeton, Joseph Henry Prize in Physics
Glenn T. Seaborg Award
American Physical Society, Fellow of the American Physical Society

Contact Information:
Work Email Address:
Laboratory Address: Young Hall 2107
Work Address: Young Hall 3040
Office Phone Number: 1 (310) 206-0828 Office
Lab Number: 1 (310) 825-9214 Laboratory
1 (310) 206-0292 Laboratory
Fax Number: 1 (310) 206-4038
Technical Research Interest:

The research interests of the Mason Group include: (1) nanoemulsions: forming nanoscale dispersions of droplets of one liquid in another immiscible liquid through extreme shear, (2) microrheology: the study of the microscale deformation and flow of nanostructured synthetic and biological materials, (3) LithoParticles: structure of novel colloidal particles dispersed in a liquid solution, and (4) small angle neutron scattering as a probe of the structure of nanoscale hydrocarbon materials and dispersions. Our group thrives on interdisciplinary interactions, and we seek research areas that combine aspects of traditionally different fields.

  • Procédé de Préparation d'une Emulsion, J. Bibette and T.G. Mason, French Patent No. 96 04736 (1996).
  • Disaggregation of Asphaltenes in Incompatible Petroleum Oil Mixtures, T.G. Mason and M.Y. Lin, U.S. Patent 09/818,435 (2001).
  • Asphaltene Aggregation in Petroleum Oil Mixtures Determined by Small Angle Light Scattering, T.G. Mason, J.C. Sung, Z. Cheng, E.B. Sirota, and M. Siskin, U.S. Patent 10/458,811 (2004).
  • Computer Controlled Automated Titration Apparatus for Optically Determining Incompatibility of Petroleum Oils, T.G. Mason, J. Paszek, E.B. Sirota, M.R. Sowlay, L.L. Smith, and J.C. Sung, U.S. Patent 10/865,441 (2004).

Selected Publications:

Kun Zhao, Robijn Bruinsma & Thomas G. Mason, Local chiral symmetry breaking in triatic liquid crystals, Nature Communications, 2012, 3 (doi:10.1038/ncomms1803).
K. Zhao, R. Bruinsma, and T.G. Mason, Entropic Crystal-Crystal Transitions of Brownian Squares, Proc. Natl. Acad. Sci. USA, 2011, 108, 2684-2687.
J.N. Wilking, C.B. Chang, M.M. Fryd, L. Porcar, and T.G. Mason, Shear-Induced Disruption of Dense Nanoemulsion Gels, Langmuir, 2011, 27 (9), 5204-10.
Lapointe CP, Hopkins S, Mason TG, Smalyukh II, Electrically driven multiaxis rotational dynamics of colloidal platelets in nematic liquid crystals, Phys Rev Lett, 2010, 105 (17), 178301.
T.M. Squires, T.G. Mason , Fluid Mechanics of Microrheology, ANNUAL REVIEW OF FLUID MECHANICS , 2010, 42, 413-438.
T.M. Squires, T.G. Mason,, Tensorial Generalized Stokes-Einstein Relation for Anisotropic Probe Microrheology, Rheol. Acta, 2010, 49, 1165-1177.
M.M. Fryd, T.G. Mason, Time-Dependent Nanoemulsion Droplet Size Reduction by Evaporative Ripening, J. Phys. Chem. Lett, 2010, 1, 3349-3353.
K. Zhao, T.G. Mason, Frustrated Rotator Crystals and Glasses of Brownian Pentagons, Phys. Rev. Lett, 2009, 103, 208302/1-4.
J.R. Rothenbuhler, J.-R. Huang, B.D. DiDonna, A.J. Levine, T.G. Mason, Mesoscale Structure of Diffusion Limited Aggregates of Colloidal Rods and Disks, Soft Matter, 2009, 5, 3639-3645.
F. Scheffold, T.G. Mason, Scattering from Highly Packed Disordered Colloids, J. Phys.: Condens. Matter, 2009, 21, 332102/1-4.
C.P. Lapointe, T.G. Mason, I.I. Smalyukh, Shape-Controlled Colloidal Interactions in Nematic Liquid Crystals, Science, 2009, 326, 1083-1086.
C.B. Chang, C.M. Knobler, W.M. Gelbart, T.G. Mason, Curvature dependence of viral protein structures on encapsidated nanoemulsion droplets, ACS Nano, 2008, 2 (2), 281-6.
Thomas Cubaud and Thomas G. Mason, Formation of miscible fluid microstructures by hydrodynamic focusing in plane geometries, Phys. Rev. E, 2008, 78 (5).
J.N. Wilking and T.G. Mason, Multiple Trapped States and Angular Kramers Hopping of Complex Dielectric Shapes in a Simple Optical Trap, Europhys. Lett, 2008, 81, 58005/p1-p5.
Jarrod A. Hanson, Connie B. Chang, Sara M. Graves, Zhibo Li, Thomas G. Mason & Timothy J. Deming, Nanoscale double emulsions stabilized by single-component block copolypeptides, Nature , 2008, 445, 85-88.
J.N. Wilking, T.G. Mason, Optically driven nonlinear microrheology of gelatin, Phys Rev E Stat Nonlin Soft Matter Phys, 2008, 77 (5 Pt 2), 055101.
J.-R. Huang and T.G. Mason, Shear Oscillation Light Scattering of Droplet Deformation and Restructuring in Concentrated Emulsions, Europhys. Lett, 2008, 83, 28004/1-5.
K. Zhao and T.G. Mason, Suppressing and Enhancing Depletion Attractions Between Surfaces Roughened by Asperities, Phys. Rev. Lett, 2008, 101, 148301/1-4.
T. Cubaud and T.G. Mason, A Microfluidic Aquarium, Phys. Fluids , 2007, 19, 091108.
C.J. Hernandez and T.G. Mason, Colloidal Alphabet Soup: Monodisperse Dispersions of Shape-Designed LithoParticles, J. Phys. Chem. C, 2007, 111, 4477-4480.
D. Weihs, T.G. Mason, and M.A. Teitell, Effects of Cytoskeletal Disruption on Transport, Structure, and Rheology Within Mammalian Cells, Phys. Fluids , 2007, 19, 103102/1-6.
J.N. Wilking and T.G. Mason, Irreversible shear-induced vitrification of droplets into elastic nanoemulsions by extreme rupturing, Phys. Rev. E, 2007, 75 (041407), 1-5.
C.J. Hernandez, K. Zhao, and T.G. Mason, Pillar-Deposition Particle Templating: A High-Throughput Synthetic Route for Producing LithoParticles, Soft Materials, 2007, 5, 1-11.
K. Zhao and T.G. Mason, Roughness-Controlled Depletion Attractions for Directing Colloidal Self-Assembly, Phys. Rev. Lett, 2007, 99, 268301/1-4.
D. Weihs, T.G. Mason, and M.A. Teitell, Simulations of Complex Particle Transport in Heterogeneous Active Liquids, Microfluid. Nanofluid, 2007, 3, 227-237.
C.R. Seager and T.G. Mason, Slippery Diffusion-Limited Aggregation, Phys. Rev. E , 2007, 75 (011406), 1-4.
H. Guo, J.N. Wilking, D. Liang, T.G. Mason, J.L. Harden, and R.L. Leheny, Slow, Non-Diffusive Dynamics in Concentrated Nanoemulsions, Phys. Rev. E, 2007, 75 (041401), 1-8.
H.E. King, S.T. Milner, M.Y. Lin, J.P. Singh, and T.G. Mason, Structure and Rheology of Organoclay Suspensions, Phys. Rev. E , 2007, 75 (021403), 1-20.
T. Cubaud, T.G. Mason, Swirling of viscous fluid threads in microchannels, Phys Rev Lett, 2007, 98 (26), 264501.
C.J. Hernandez, K. Zhao, and T.G. Mason, Well-Deposition Particle Templating: Rapid Mass-Production of LithoParticles Without Mechanical Imprinting, Soft Materials, 2007, 5, 13-31.
D. Wiehs, T.G. Mason, and M.A. Teitell, Bio-microrheology: A Frontier in Microrheology, Biophys. J. , 2006, 91, 4296-4305.
J.N. Wilking, S.M. Graves, C.B. Chang, K. Meleson, M.Y. Lin, T.G. Mason, Dense cluster formation during aggregation and gelation of attractive slippery nanoemulsion droplets, Phys Rev Lett, 2006, 96 (1), 015501.
T.G. Mason, S.M. Graves, J.N. Wilking, M.Y. Lin, Effective structure factor of osmotically deformed nanoemulsions, J Phys Chem B, 2006, 110 (44), 22097-102.
T.G. Mason, S.M. Graves, J.N. Wilking, and M.Y. Lin, Extreme Emulsification: Formation and Structure of Nanoemulsions, Condensed Matter Phys, 2006, 9 , 193-199 .
T. Cubaud, T.G. Mason, Folding of viscous threads in diverging microchannels, Phys Rev Lett, 2006, 96 (11), 114501.
T.G. Mason, J.N. Wilking, K. Meleson, C.B. Chang, and S.M. Graves, Nanoemulsions: Formation, Structure, and Physical Properties, J. Phys.: Condens. Matter, 2006, 18, R635-R666.
T. Cubaud and T.G. Mason, Swirling and Multiple Folding of Viscous Threads in Microchannels, Phys. Rev. Lett, 2006, 98 (26).
Mason TG, Lin MY., Density profiles of temperature-sensitive microgel particles, Phys Rev E Stat Nonlin Soft Matter Phys, 2005, 71 (4 Pt 1), 040801.
S.M. Graves, K. Meleson, J.N. Wilking, M.Y. Lin, T.G. Mason, Structure of concentrated nanoemulsions, J Chem Phys, 2005, 122 (13), 134703.
T.G. Mason, Time Resolved Small Angle Neutron Scattering Measurements of Asphaltene Nanoparticle Aggregation Kinetics in Crude Oil Mixtures, ACS National Meeting Conference Proceedings, 2005.
K. Meleson, S. Graves, T.G. Mason, Formation of Concentrated Nanoemulsions by Extreme Shear, Soft Materials, 2004, 2 (2 & 3 ), 109-123.
I. Cohen, T.G. Mason, and D.A. Weitz, Shear-Induced Configurations of Confined Colloidal Suspensions, Phys. Rev. Lett, 2004, 93, 046001/1-4 .