Vibration induced by active nematics

Active elements in active nematics can impose forces on immersed bodies and move them accordingly. We numerically investigate the vibrational motion of a cantilever beam placed nematics. The continuous energy transfer from vortices to results oscillation, whose direction amplitude depend vortex strength, size position. Referring kinetic-energy spectrum, we indicate that both large- small-scale are primary mechanism for between fluid beam, leading oscillatory motion, with contribution large-scale being higher. effect properties such as activity, viscosity elastic constant oscillation frequency. show intensification activity increases peak frequency, there is linear correlation frequency activity. further demonstrate reciprocal relationship Subsequently, relate increase decrease injection/dissipation by activity/viscosity. Moreover, reveal negligibly small dependency discuss free energy's role accounting this behaviour. findings clearly fluids an flexible bodies, which might be used novel method measuring critical