Introductory Physics 121.

Research

Arshad Kudrolli does experiments on a broad range of non-equilibrium phenomena, granular materials, and biological physics. Topics of recent experiments include grain shape and dynamics, scaled-up ciliary flow and sychronization, crumpling, self-assembly, erosion geomorphology, and population dynamics in bacterial colonies. He has recently developed an undergraduate continuum mechanics course combining fluid dynamics and biomechanics, and an activity based introductory physics course. Visit the complex matter and nonlinear physics laboratory page for more information on current research activities.

Arshad Kudrolli has been named an Alfred P. Sloan Research Fellow by the Sloan Foundation. His research is also funded by the National Science Foundation, the Department of Energy, Petroleum Research Fund, and Research Corporation.

His background includes a post-doc in nonlinear physics and pattern formation with Jerry P. Gollub at Haverford College, and thesis work in Quantum Chaos using microwave techniques with S. Sridhar at Northeastern University.

Publications

1. "News and Views: Granular Matter - Sticky Sand," A. Kudrolli, Nature Materials 7, 174 (2008).
2. "Swarming and swirling in self-propelled granular rods," A. Kudrolli, G. Lumay, D. Volfson, and L. Tsimring, Phys. Rev. Lett. 100, 058001 (2008).
   
   
3. "Lubrication effects on the flow of wet granular materials," Q. Xu, A. V. Orpe, and A. Kudrolli, Phys. Rev. E 76, 031302 (2007).
4. "Erosion of a granular bed driven by laminar fluid flow," A. Orpe, A. Lobkovsky, R. Molloy, A. Kudrolli, and D. Rothman, J. Fluid Mech. (accepted).
5. "Velocity correlations in dense granular flows observed with internal imaging," A.V. Orpe and A. Kudrolli, Phys. Rev. Lett. 98, 238001 (2007). cond-mat/0612658
6. "Dynamics of channel incision in a granular bed driven by subsurface water flow," A. E. Lobkovsky, B. Smith, A. Kudrolli, D. C. Mohrig, and D. H. Rothman, J. Geophys. Res., 112, F03S12 (2007). doi:10.1029/2006JF000517. cond-mat/0505352.
7. "Curvature condensation and bifurcation in an elastic shell," M. Das, A. Vaziri, A. Kudrolli, and L. Mahadevan, Phys. Rev. Lett. 98, 014301 (2007).
8. "Friction of a slider on a granular layer: Nonmonotonic thickness dependence and effect of boundary conditions," S. Siavoshi, A. V. Orpe, and A. Kudrolli, Phys. Rev. E 73, 010301 (2006).
9. "Maximum angle of stability of a wet granular pile," S. Nowak, A. Samadani, and A. Kudrolli, Nature Physics 1, 50 (2005). Reprint. See related News and Views, and Cover Story. Press Coverage in , CNN, among others.
   
10. "Dynamics of a bouncing dimer," S. Dorbolo, D. Volfson, L. Tsimring, and A. Kudrolli, Phys. Rev. Lett. 95, 044101 (2005) physics/0506060.
11. "Velocity profile of granular flows inside silos and hoppers," J. Choi, A. Kudrolli, and M. Z. Bazant, J. Phys. Condensed Matter 17 S2533-S2548 (2005). cond-mat/0501568.
12. "Failure of a granular step," S. Siavoshi and A. Kudrolli, Phys. Rev. E 71, 051302 (2005) (6 pages). cond-mat/0503231.
13. "The geometry of crumpled paper," D.L. Blair and A. Kudrolli, Phys. Rev. Lett. 94, 166107 (2005).
    
    
14. "Threshold phenomena in erosion driven by subsurface flow," A.E. Lobkovsky, B. Jensen, A. Kudrolli, and D.H. Rothman, Journal of Geophysical Research - Earth Surface 109, F04010 (2004).
15. "Anisotropy driven dynamics in vibrated granular rods," D. Volfson, A. Kudrolli, and L.S. Tsimring, Phys. Rev. E 70, 051312 (2004). cond-mat/0403489.
16. "Diffusion and mixing in gravity-driven dense granular flows," J. Choi, A. Kudrolli, R. R. Rosales, and M. Z. Bazant, Phys. Rev. Lett. 92, 174301 (2004). preprint
17. "Spontaneous channelization in permeable ground: Theory, experiment, and observation," N. Schorghofer, B. Jensen, A. Kudrolli, and D.H. Rothman, J. Fluid Mechanics 503, 357-374 (2004). nlin.PS/0311049
18. "Size separation in vibrated granular materials," A. Kudrolli, Reports on Progress in Physics 67, 209 - 247 (2004). link
19. "Magnetized granular materials," D.L. Blair and A. Kudrolli, in The Physics of granular media, H. Hinrichsen and D.E. Wolf (Editors), (Wiley-VCH publishers, 2004) 281-296.
    
20. "Collision statistics of driven granular materials," D.L. Blair and A. Kudrolli, Phys. Rev. E 67, 041301 (2003). cond-mat/0212336
21. "Vortices in vibrated granular rods," D.L. Blair, T. Neicu, and A. Kudrolli, Phys. Rev. E 67, 031303 (2003). cond-mat/0203236
22. ``Clustering transitions in vibro-fluidized magnetized granular materials," D.L. Blair and A. Kudrolli, Phys. Rev. E 67, 021302 (2003). cond-mat/0203488
23. ``Shocks in sand flowing in a silo," A. Samadani, L. Mahadevan, and A. Kudrolli, J. Fluid Mech. 452, 293-301 (2002). cond-mat/0110427
24. ``Periodic orbit analysis of an elastodynamic resonator using shape deformation," T. Neicu and A. Kudrolli, Europhys. Lett., 57 (3) , 341-347 (2002), cond-mat/0110543
25. ``Angle of repose and segregation of cohesive granular matter," A. Samadani and A. Kudrolli, Phys. Rev. E, 64, 051301 (2001), cond-mat/0106572
26. ``Velocity correlations in dense granular gases," D. L. Blair and A. Kudrolli, Phys. Rev. E 64, 050301(R) (2001). cond-mat/0101015
27. ``Swarming ring patterns in bacterial colonies exposed to ultraviolet radiation," A. Delprato, A. Samadani, A. Kudrolli, and L. Tsimring, Phys. Rev. Lett. 87, 158102 (2001), cond-mat/0101018 See related story in and , New Scientist
28. ``Eigenvalues and Eigenfunctions of a Clover Plate," O. Brodier, T. Neicu, and A. Kudrolli, Eur. Phys. J. B 23, 365 (2001).
29. ``Segregation transitions in wet granular matter," A. Samadani and A. Kudrolli, Phys. Rev. Lett. 85, 5102 (2000) (preprint on cond-mat/0008293)
30. ``Spectral properties of a mixed system using an acoustical resonator," T. Neicu, K. Schaadt, and A. Kudrolli, Phys. Rev. E 63 026206 (2001).
31. ``Scarred patterns in surface waves," A. Kudrolli, M. Abraham, and J.P. Gollub, Phys. Rev. E 63, 026208 (2001) (movies/preprint).
32. ``Non-Gaussian velocity distributions in excited granular matter in the absence of clustering," A. Kudrolli and J. Henry, Phys. Rev. E 62, R1489 (2000) (preprint on cond-mat).
33. ``Extinction transition in bacterial colonies under forced convection," T. Neicu, A. Pradhan, D. A. Larochelle, and A. Kudrolli, Phys. Rev. E 62, 1059 (2000) (preprint on cond-mat).
34. ``Size Segregation of Granular Matter in Silo Discharges," A. Samadani, A. Pradhan, and A. Kudrolli, Phys. Rev. E 60, 7203 (1999).
35. Experimental investigation of universal parametric correlators using a vibrating plate, K. Schaadt, and A. Kudrolli, Phys. Rev. E. 60 R3479 (1999)
36. "Velocity statistics in vibrated granular media," W. Losert, D.G.W. Cooper, J. Delour, A. Kudrolli, J.P. Gollub, Chaos 9, 682 (1999).
37. "Superlattice patterns in surface waves," A. Kudrolli, B. Pier, and J. P. Gollub, Physica D 22, 99 (1998).

38. "Friction in Granular Layers: Hysteresis and Precursors," S. Nasuno, A. Kudrolli, and J. P. Gollub, Phys. Rev. Lett. 79, 949 (1997).
39. "Sensitive force measurements in sheared granular flow with simultaneous imaging'', S. Nasuno, A. Kudrolli, and J. P. Gollub, Powders and Grains (1997).
40. "Studies of cluster formation due to collisions in granular material'', A. Kudrolli, and J. P. Gollub, Powders and Grains (1997).
41. "Cluster formation due to Collisions in Granular Material'', A. Kudrolli, M. Wolpert and J. P. Gollub, Phys. Rev. Lett. 78, 1383 (1997).
42. "Patterns and Spatiotemporal Chaos in Parametrically Forced Surface Waves: Systematic Survey at Large Aspect Ratio'', A. Kudrolli and J. P. Gollub, Physica D 97, 133 (1996).
43. "Localized Spatiotemporal Chaos'', A. Kudrolli and J. P. Gollub, Phys. Rev. E 54, R1052 (1996).
44. "Experiments on Quantum Chaos using microwave cavities: Results for the pseudo-integrable L-billiard'', A. Kudrolli and S. Sridhar, Pramana J. of Phys. (to appear).
45. "Microwave 2-disk scattering'', A. Kudrolli and S. Sridhar, in Proceedings of the 4th Drexel Conference on Nonintegrablity, (World Scientific, 1996).
46. "Comment on Gaussian Orthogonal Ensemble Statistics ....'', A. Kudrolli and S. Sridhar, Phys. Rev. Lett. 76, 3036 (1996).
47. "Spatial Correlation in Quantum Chaotic Systems with Time-reversal Symmetry: Theory and Experiment," V. N. Prigodin, N. Taniguchi, A. Kudrolli, V. Kidambi and S. Sridhar, Phys. Rev. Lett. 75, 2392 (1995).
48. "Experiments on Chaos and Localization in Quantum Wavefunctions," A. Kudrolli, V. Kidambi and S. Sridhar, Phys. Rev. Lett. 75, 822 (1995).
49. "Experiments on Quantum Chaos using microwave cavities," A. Kudrolli and S. Sridhar, in Proceedings of the 2nd Conference on Experimental Chaos , editors W. Ditto, L. Pecora, S. Vohra, M. Shlesinger and M. Spano, (World Scientific, 1995), p184.
50. "Experiments on Not Hearing the Shape of Drums," S. Sridhar and A. Kudrolli, Phys. Rev. Lett. 72, 2175 (1994).
51. "Signatures of Chaos in Quantum Billiards: Microwave Experiments," A. Kudrolli, S. Sridhar, A. Pandey and R. Ramaswamy, Phys. Rev. E 49, R11 (1994).
52. "Experimental Eigenvalue Spectra of Rough and Multiply-connected Billards," S. Sridhar, D. Hogenboom and A. Kudrolli, in Quantum Dynamics of Chaotic Systems , edited by J. M. Yuan, D. H. Feng and G. M. Zaslavsky, (Gordon and Breach, Amsterdam, 1993), p. 297.

Links to research conducted before comming to Clark:

• Granular Friction: Hystersis and Precursors (with S. Nasuno and J. P. Gollub).
• Cluster Formation in Granular Flow (with M. Wolpert and J. P. Gollub).
• Superlattices, Hexagons, Squares and Stripes in Surface Waves (with J. P. Gollub).
• Statistical properties eigenfunctions of Disordered and Quantum Chaotic Systems (with V. Kidambi and S. Sridhar).
• One cannot Hear the Shape of Drums (with S. Sridhar).
• Click here to see java applet that demonstrates inelastic collapse.

Link to father's web page on Urdu Poetry

Please send comments to:
Arshad Kudrolli
akudrolli@clarku.edu

Last modified August 2, 2007.