【摘要】 利用双水电极实验装置,在介质阻挡放电系统中观察到了具有不同空间对称性的斑图之间的演化过程.在实验中,通过改变外界驱动电压发现:在升高电压的过程中,条纹斑图会发生失稳,并逐渐形成六边形斑图;形成规则的六边形斑图后,降低驱动电压,六边形斑图会失稳再次形成条纹结构.进一步降低驱动电压,在条纹斑图中观察到了横向调制失稳现象.更多还原

【Abstract】 The developments of patterns with different symmetries are observed by using the well-defined setup with double water electrodes in dielectric barrier discharge system.It is found that the rolls loses stability and deforms into regular hexagonal pattern as the voltage increasing;then the decrease of voltage can lead to an instability of hexagonal pattern,and a transition to striped pattern occures.A phenomenon of transverse modulation can be seen in the rolls as decreasing the driving voltage further.更多还原