Full‐Parameter Omnidirectional Thermal Metadevices of Anisotropic Geometry,Advanced Materials

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Full‐Parameter Omnidirectional Thermal Metadevices of Anisotropic Geometry
Advanced Materials ( IF 27.4 ) Pub Date : 2018-10-11 , DOI: 10.1002/adma.201804019
Tiancheng Han ₁ , Peng Yang ₁ , Ying Li ₂ , Dangyuan Lei ₃ , Baowen Li ₄ , Kedar Hippalgaonkar ₅ , Cheng-Wei Qiu ₂

Affiliation

Since the advent of transformation optics and scattering cancelling technology, a plethora of unprecedented metamaterials, especially invisibility cloaks, have been successfully demonstrated in various communities, e.g., optics, acoustics, elastic mechanics, dc electric field, dc magnetic field, and thermotics. A long‐held captivation is that transformation‐optic metamaterials of anisotropic or noncentrosymmetric geometry (e.g., ellipsoids) commonly come along with parameter approximation/simplification or directional functions. Here, a synthetic paradigm with strictly full parameters and omnidirectionality is reported simultaneously to address this long‐held issue for molding heat flow and experimentally demonstrate a series of noncentrosymmetric thermal metadevices. It changes the usual perception that transformation thermotic/dc/acoustic metamaterials are just a direct and simplified derivatives of the transformation‐optic counterpart. Instead, the proposed methodology solves an intriguingly important and challenging problem that is not possibly achievable for transformation‐optic metamaterials. The approach is rigorous, exact, robust, and yet elegantly facile, which may open a new avenue to manipulating the Laplacian and wave‐dynamic fields in ways previously inconceivable.

中文翻译：

各向异性几何的全参数全向热元设备

自从转换光学和散射消除技术问世以来，已经在各种领域成功地展示了许多前所未有的超材料，尤其是隐形斗篷，例如光学，声学，弹性力学，直流电场，直流磁场和热力学。长期以来，人们一直着迷于各向异性或非中心对称几何形状（例如椭圆体）的变换光学超材料通常带有参数逼近/简化或方向函数。在此，同时报道了具有严格的完整参数和全向性的合成范例，以解决成型热流这一长期存在的问题，并通过实验证明了一系列非中心对称的热元设备。它改变了通常的观念，即转变热学/直流/声学超材料只是转变光学对应物的直接和简化的派生。取而代之的是，所提出的方法论解决了一个非常重要且具有挑战性的问题，而对于变换光学超材料而言，这是不可能实现的。该方法严格，精确，可靠且优雅，这可能为以以前无法想象的方式操纵拉普拉斯和波动力场开辟了一条新途径。

更新日期：2018-10-11

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