Publications

Journal Publications

• Toughness and damage tolerance of fractal hierarchical metamaterials, Ashivni Shekhawat, November 2016, Under review, arxiv.
• Deformation of crystals: Connections with statistical physics, James P. Sethna et. al, September 2016, Accepted for publication in Annual Review of Materials Research, arxiv
• A generalized Read–Shockley model and large scale simulations for the energy and structure of graphene grain boundaries, A Shekhawat, C Ophus, RO Ritchie,RSC Advances 6 (50), 44489-44497, arxiv 
• Toughness and Strength in Nano-crystalline Graphene, Ashivni Shekhawat, Robert O. Ritchie, Nature Communications 7, Article number: 10546, arxiv
• Large-Scale Experimental and Theoretical Study of Graphene Grain Boundary Structures, Colin Ophus, Ashivni Shekhawat, Haider I Rasool, Alex Zettl, Phys. Rev. B 92, 205402, arxiv 
• Improving extreme value statistics, Ashivni Shekhawat, Phys. Rev. E 90, 052148, arxiv
• Fracture strength: Stress concentration, extreme value statistics and the fate of the Weibull distribution, Zsolt Bertalan, Ashivni Shekhawat, James P. Sethna, Stefano Zapperi, Phys. Rev. Applied 2, 034008. PDF.
• Imaging atomic rearrangements in two-dimensional silica glass: watching silica’s dance, Pinshane Y. Huang, Simon Kurasch, Jonathan S. Alden, Ashivni Shekhawat, Alexander A. Alemi, Paul L. McEuen, James P. Sethna, Ute Kaiser, and David A. Muller. Science 11 October 2013, Vol. 342 no. 6155 pp. 224-227. PDF.
• From damage percolation to crack nucleation through finite size criticality, Ashivni Shekhawat, Stefano Zapperi, and James P. Sethna, Physical Review Letters 110, 185505 (2013), PDF,arxiv. (Editor’s choice for a viewpoint, The Breaking of Brittle Materials by Elisabeth Bouchaud. See also Shattered glass: New theory explains how things break in the Cornell Chronicle (Anne Ju)).
• Fracture strength of disordered media: Universality, interactions and tail asymptotics,  Claudio Manzato, Ashivni Shekhawat, Phani K. V. V. Nukala, Mikko J. Alava, James P. Sethna, and Stefano Zapperi, Physical Review Letters 108, 065504, 2012. PDF, arxiv.  See Physicists predict when brittle materials fail in the Cornell Chronicle (Anne Ju).
• Dielectric breakdown and avalanches at non-equilibrium metal-insulator transitions,  Ashivni Shekhawat, Stefanos Papanikolaou, Stefano Zapperi, and James P. Sethna, Physical Review Letters 107, 276401, 2011.  PDF, arxiv.
• Nonlinear dynamics of oscillators with bilinear hysteresis and sinusoidal excitation,  Tamas Kalmar-Nagy, Ashivni Shekhawat, Physica D 238 (2009) 1768-1786.

Invited Talks

• What has fracture got to do with magnets and the liquid-gas critical point?, Ashivni Shekhawat, James P. Sethna, Institute seminar at the Institute for Mathematical Sciences, Chennai, India, January 6, 2014.
• Fracture and critical phenomena, Ashivni Shekhawat, James P. Sethna, Departmental seminar at the Department of Applied Mechanics, Indian Institute of Technology, Delhi, December 17, 2013.
• Fracture, magnets, and critical points, Ashivni Shekhawat, James P. Sethna, Departmental seminar at the Department of Mechanical and Aerospace Engineering, University of Florida, Gainsville, November 12, 2013.
• Statistics of fracture: Weibull, Gumbel and other questions, Ashivni Shekhawat,  Claudio Manzato, Phani K. V. V. Nukala, Mikko J. Alava, Stefano Zapperi, James P. Sethna, 2012 TMS Annual Meeting & Exhibition, Orlando, Florida, March 11-15, 2012.
• Fracture statistics: Universality vs nucleation, Ashivni Shekhawat, Claudio Manzato, Phani K. V. V. Nukala, Mikko J. Alava, Stefano Zapperi, James P. Sethna, American Physical Society March Meeting, February 27 – March 2 2012.
• Fracture and reliability in engineering materials, Ashivni Shekhawat, Claudio Manzato, Phani K. V. V. Nukala, Mikko J. Alava, Stefano Zapperi, James P. Sethna, 50th Aerospace Sciences Meeting, Nashville, Tennessee, January 9-12, 2012.