Active suspensions of E.coli: Individual dynamics and collective behaviors
Active matter systems are driven out of equilibrium as each individual propels itself, as each fish swims in a school. At high concentration, active matter systems display collective dynamical behavior commonly known as ‘flocking’, as all individuals move in coordination. At phenomenological level, traditional theories assume an alignment interaction between individuals at a characteristic separation, predicting collective dynamics at concentrations relevant to the characteristic separation. However, the microscopic mechanism underlying this alignment is not well understood. Through close collaboration between experimental and theoretical studies, the hydrodynamic interaction at individual level is studies in detail. In the meantime, the collective response of active suspensions upon shear is studied, leading to better understanding of the ‘flocking’ behavior.
邀请人：杨明成 副研究员 （电话：8264 9374）