We simulate exact spatio-temporal evolutions of self-organization in KNbO3 using a reflection grating based phenomenological model, and a rigorous model including the time evolution of photovoltaic voltage. The initial phase difference of scattering waves is critical to hexagon formation. Finally, we compare the stability range for those two models.
We present our simulation model on the time evolution of the hexagon pattern formation in KNbO3. The result has been compared with the previous work concerning the steady state ring analysis. By starting with different amplitude of the scattered waves, we are able to obtain some preliminary results relative to the hexagon pattern.
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