Abstract
Architected structures have aroused widespread research interest for they possess unique properties in mechanics. However, a fundamental theory has not been established to understand their thermal properties. This chapter describes a theoretical framework in thermotics to predict thermal properties of architected structures. Then, by experiment and simulation, we show its applications in the field of heat management. By assembling two radically different materials, we design two types of Janus structures. The different rotation degrees of the Janus structures can flexibly control the switch between different functions, such as, from partial concentration to uniform concentration and from rotation to concentration. These functions are realized in the structure made of heterogeneous core plus homogeneous shell, which is contrary to the existing structures made of homogeneous core plus heterogeneous shell designed by the theory of transformation thermotics. This chapter lays a theoretical foundation in thermotics for further research on heterogeneously architected structures, and it proposes the concept of thermal Janus structures for flexible heat control, which may open an avenue for intelligent thermal metamaterials.
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Huang, JP. (2020). Theory for Anisotropic Core and Isotropic Shell: Isothermal Rotation. In: Theoretical Thermotics. Springer, Singapore. https://doi.org/10.1007/978-981-15-2301-4_15
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DOI: https://doi.org/10.1007/978-981-15-2301-4_15
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