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Dr. Joshua Bostwick

Associate Professor

Office: 219 Fluor Daniel Building
Phone: (864) 656-5625
Fax: (864) 656-4435

Dr. Bostwick's Web Site

Joshua B. Bostwick joined the department in January 2016 following appointments as Golovin Assistant Professor at Northwestern University and postdoc researcher at NC State University. His research addresses fundamental problems on interfacial flows with an emphasis on wetting and the interactions of liquids with soft substrates (elastocapillarity). More broadly, he is interested in pattern formation on interfaces, surface tension-driven phenomena, complex fluids, and soft matter. He is attracted to such problems because it is often possible to elucidate the underlying physics using simple, yet rigorous, mathematical models to compare to experiments.


PhD, Theoretical and Applied Mechanics, Cornell University, 2011
BS, Civil Engineering and Mechanics, University of Wisconsin-Milwaukee, 2005
BS, Physics, University of Wisconsin-Milwaukee, 2005

Research Interests

Surface tension, wetting, drops, hydrodynamic stability, elastocapillarity, soft matter, pattern formation, bifurcation theory

Selected Publications


S. Tamim and J.B. Bostwick “Plateau-Rayleigh instability in a soft viscoelastic material” Soft Matter, 17, 4170-4179 (2021)

C. Gabbard and J.B. Bostwick “Asymmetric instability in thin-film flow down a fiber” Physical Review Fluids, 6 (3) 034005 (2021)

C. Wilson, L. Thompson, H. Choi, and J.B. Bostwick “Enhanced wettability in ultrasonic-assisted soldering to glass substrates” Journal of Manufacturing Processes 64, 276-284 (2021)

T. Nichols and J.B. Bostwick “Geometry of polygonal hydraulic jumps and the role of hysteresis” Physical Review Fluids, 5 (4) 044005 (2020)

X. Shao, S. Fredericks, J.R. Saylor, and J.B. Bostwick “Elastocapillary transition in gel drop oscillations” Physical Review Letters 123, 188002 (2019)

P.H. Steen, C.T. Chang, and J.B. Bostwick “Droplet motions fill a periodic table” Proceedings of the National Academy of Sciences 116 (11) 4849-4854 (2019)

M. Grzelka, J.B. Bostwick and K.E. Daniels. “Capillary fracture of ultrasoft gels: variability and delayed nucleation.” Soft Matter. 13, 2962-2966 (2017) [back cover image].

J.B. Bostwick and P.H. Steen. “Stability of constrained capillary surfaces.” Annual Review of Fluid Mechanics. 47, 539-568, (2015).

Dr. Joshua Bostwick