Nevill Mottt Hall
Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)
Jakkur Campus, Bangalore 560064

Administrative Contact:

K Venkatesh
Programme Assistant

Email: dmwater@jncasr.ac.in

Tel: 080-22082899
Fax: 080-2208 2906

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Regular JNC Shuttle Bus Timings:

January 9:
From IISc 9:15 a.m, 10:15 a.m.

January 10:
From IISc: 8:30 a.m, 10:00 a.m.

Discussion Meeting on
Water and Aqueous Solutions

January 9 - 10, 2015

Influence of Bilayer melting on the dynamics and thermodynamics of interfacial water

Ananya Debnath, K. G. Ayappa and Prabal K Maiti
Indian Institute of Science,
Bangalore 560012, India

E-mail: maiti@physics.iisc.ernet.in

Abstract: We investigate the effect of bilayer melting transition on thermodynamics and dynamics of interfacial water using molecular dynamics simulation with the two-phase thermodynamic model. We show that the diffusivity of interface water depicts a dynamic crossover at the chain melting transition following an Arrhenius behavior until the transition temperature. The corresponding change in the diffusion coefficient from the bulk to the interface water is comparable with with experimental observations found recently for water near DPPC vesicle. The entropy and potential energy of interfacial water show distinct changes at the bilayer melting transition, indicating a strong correlation in the thermodynamic state of water and the accompanying first-order phase transition of the bilayer membrane.

Reference: Phys. Rev. Lett. 110, 018303 (2013)