Instability of an autochemotactic active suspension

This study examines the effects of an evolving attractant field, due to phenomenon autochemotaxis, on stability a dilute suspension active swimmers in channel. Motile typically exhibit orientation bias that is dependent upon local gradient field. By modelling autochemotactic behaviour through non-dimensional number $Da$ characterizes rate secretion, we are able show stress-driven instability predicted by Kasyap & Koch ( Phys. Rev. Lett. , vol. 108, issue 3, 2012, p. 038101) for pushers stabilized with increasing . We also results flow pullers. Furthermore, analytically and numerically absence convective transport attractant, pullers undergo simultaneous switch stabilities at critical