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Title
| - Chemical Turbulence and Line Defects Induced by Gradient Effects in a Three-DimensionalReaction−Diffusion System
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Abstract
| - We report experimental observations of chemical turbulence and line defects in a three-dimensional (3-D)Belousov−Zhabotinsky (BZ) reaction−diffusion system. Transitions from spiral waves to 3-D chemicalturbulence to line defects are observed. These transitions are caused by concentration gradients across thethird dimension in the 3-D reaction medium, indicating the observed line defects have a 3-D structure. Theline defects come out of the 3-D turbulent state, and become smooth with the increase of the control parameter.Simulation with the two-variable Oregonator model in the 3-D system reproduces similar line defects.
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