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Updated: Jun 22, 2026

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
Published on: May 15, 2017
Dynamic susceptibility of supercooled water and its relation to the dynamic crossover phenomenon
Yang Zhang1, Marco Lagi, Emiliano Fratini
1Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Abstract:
We study the dynamic susceptibility chi_{T}(Q,t) of deeply supercooled water by means of quasielastic neutron scattering and molecular dynamics simulations. Both techniques show an increase in the peak height of chi_{T}(Q,t) as the temperature is lowered toward the dynamic crossover temperature T_{L} . Below T_{L} , the peak height decreases steadily. We attribute this phenomenon to the change in slope of the Arrhenius plot of the translational relaxation time at T_{L} . In contrast, the peak height of the calculated four-point correlation function chi_{4}(Q,t) , directly related to the size of dynamic heterogeneity, increases toward and below T_{L} .
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