Abstract Thermal illusion device, which can change an arbitrary object into another one when observed from an infrared vision, recently has attracted considerable attention amongst a series of innovative thermal phenomena by resorting to the unique thermal metamaterial. To enhance the illusion deceptiveness, current thermal illusion devices mostly change the location or shape of the target, but seldom deal with the number of heat signatures. In this paper, we develop a general formula to enhance the illusion deceptiveness by splitting the thermal target to appear like thermal bilocation with twinborn distinct heat signatures. The exhaustive design process based on transformation thermodynamics is rigorously introduced in order to realize thermal bilocation. Simulative and experimental results agree well with each other and validate the conception of thermal bilocation. Additionally, the influence of three structure parameters on the bilocation effects has been considered for further optimization. Our device can thermally camouflage the original target with twinborn signatures at different locations, improving the deceptiveness greatly compared with only moving or reshaping. The present thermal bilocation not only can fortify the performance of thermal camouflage, but also can stimulate the extension of illusion thermodynamics to further physical applications.

中文翻译：

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具有类似孪生热特征的热错觉

摘要 热错觉装置利用独特的热超材料，在红外视觉下可以将任意物体变成另一个物体，近年来在一系列创新的热现象中引起了广泛关注。为了增强错觉的欺骗性，目前的热错觉装置大多改变目标的位置或形状，但很少处理热特征的数量。在本文中，我们开发了一个通用公式，通过将热目标拆分为具有双生不同热特征的热双定位来增强错觉欺骗性。严格引入基于转化热力学的详尽设计过程，以实现热双定位。模拟和实验结果相互吻合，验证了热双定位的概念。此外，还考虑了三个结构参数对双位效应的影响以进行进一步优化。我们的设备可以在不同位置对具有双胞胎特征的原始目标进行热伪装，与仅移动或重塑相比，大大提高了欺骗性。目前的热双定位不仅可以加强热伪装的性能，而且可以刺激幻觉热力学扩展到进一步的物理应用。我们的设备可以在不同位置对具有双胞胎特征的原始目标进行热伪装，与仅移动或重塑相比，大大提高了欺骗性。目前的热双定位不仅可以加强热伪装的性能，而且可以刺激幻觉热力学扩展到进一步的物理应用。我们的设备可以在不同位置对具有双胞胎特征的原始目标进行热伪装，与仅移动或重塑相比，大大提高了欺骗性。目前的热双定位不仅可以加强热伪装的性能，而且可以刺激幻觉热力学扩展到进一步的物理应用。