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Srivatsan Hulikal's blog

Nonequilibrium interface behavior in Cahn-Hilliard models for Li-ion batteries

Experiments, numerical simulations, and analytical calculations are used to calibrate a diffuse-interface Cahn-Hilliard model of Li-Sn thin film electrodes that experience a transformation from Sn to Li2Sn5. It is shown that a concentration-gradient dependent mobility can be used in the Cahn-Hilliard equation to give the interface a finite mobility and capture its nonequilibrium behavior.

Model for static and kinetic friction (rate and state)

We recently proposed a model for rate and state friction by studying the collective (statistical) behavior of viscoelastic asperities. Various observed features of friction emerge as collective phenomena, without postulating them directly at the microscale. The paper is available at the link below. 

http://www.sciencedirect.com/science/article/pii/S0022509614002063

 

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