Computational metamaterials have enabled the realization of real-time mathematical operations in spatial and time domains. Here, we present the design and experimental demonstration of time-domain differential operations based on an elastic wave computational metamaterial. For generality and universality, the linearity and the product rule for the wave-based differentiation are also verified, as well as the functionality of cascaded differentiators. We expect that acoustic computational metamaterials will enable new capabilities in signal acquisition and processing and network computing and drive new applications of the sound wave.

中文翻译：

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时间微分弹性波计算超材料

计算超材料使得在空间和时间域中实现实时数学运算成为可能。在这里，我们展示了基于弹性波计算超材料的时域微分运算的设计和实验演示。对于一般性和普遍性，还验证了基于波的微分的线性和乘积规则，以及级联微分器的功能。我们预计声学计算超材料将在信号采集和处理以及网络计算方面实现新的能力，并推动声波的新应用。