Biography
Biography: Chang Qing Sun
Abstract
As the source and central part of all lives, water is most abundant yet least known. Th is talk shares the recent progress: Correlation of the length scale, structure order and mass density of molecular packing in water ice, potential paths for O:H-O bond at relaxation and anomalies of water ice under compression, molecular under-coordination and thermal excitation. Hydrogen bond (O:H-O) possesses memory and extreme deformation recoverability, which resolves mysteries of density of ice, slipperiness of ice, Mpemba paradox: Hot water freezes faster, Hofmeister eff ect: Aqueous ions modulate solution’s surface tension and its ability of dissolving proteins and Regelation: Ice melts under compression and freezes again when the pressure is relieved. Understanding may extend to fi elds such as water-biomolecular interaction, water purifi cation, energy management, etc.