Sustained large-amplitude chemomechanical oscillations induced by the Landolt clock reaction.

摘要: Synergetic chemomechanical oscillators represent a fundamentally new class of oscillators, where clock reaction, owning no oscillatory chemical kinetics, generates shrinking–swelling cycles in chemoresponsive gel under appropriate fixed nonequilibrium boundary conditions. Sufficiently large size-changes are condition for continually switching between reacted and an unreacted state the through sufficiently differences diffusion time environment core gel. Two former experimental demonstrations with acid autocatalytic reactions were frustrated either by complex behaviors (chlorite–tetrathionate system) or side matrix (bromate–sulfite system). With Landolt (iodate–sulfite) regular large-amplitude oscillations can be sustained more than week. This enabled fine study temperature stoichiometry range operation. I have identified several key steps that experimentally ess...