降水结构信息编码
Encoding information into precipitation structures
摘要：
如果能够容易地控制沉淀模式的形成，亚微米尺度的材料设计将受到深刻的影响。它将允许直接建造散装结构，与传统技术相比，传统技术包括去除材料以创建模式。在这里，我们讨论了我们最近的建议，使用电流来控制沉淀带出现在A^{+} + B^{-} -> C反应扩散过程中的反应前沿的尾流的扩展。我们的主要结果，基于模拟的反应-扩散-沉淀方程，是带电剂的动力学可以通过适当设计的随时间变化的电流来引导，这样，除了控制带间距，沉淀带的宽度也可以被调谐。这使得直接的信息编码成降水模式，作为一个有趣的例子，我们展示了如何编码的音乐节奏的可行性。
英文摘要：
Material design at submicron scales would be profoundly affected if the formation of precipitation patterns could be easily controlled. It would allow the direct building of bulk structures, in contrast to traditional techniques which consist of removing material in order to create patterns. Here, we discuss an extension of our recent proposal of using electrical currents to control precipitation bands which emerge in the wake of reaction fronts in A^{+} + B^{-} -> C reaction-diffusion processes. Our main result, based on simulating the reaction-diffusion-precipitation equations, is that the dynamics of the charged agents can be guided by an appropriately designed time-dependent electric current so that, in addition to the control of the band spacing, the width of the precipitation bands can also be tuned. This makes straightforward the encoding of information into precipitation patterns and, as an amusing example, we demonstrate the feasibility by showing how to encode a musical rhythm.
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