Modulating the photonic transmission coefficient (PTC) is a critical factor in regulating the near-field radiative heat transfer (NFRHT) between two objects. Extending previous studies, we find that multiple body-vacuum interfaces can support various resonance modes and flexibly amplify the PTC. We show that black phosphorus (BP)/vacuum multilayers support coupled multiple anisotropic surface plasmon polaritons (MASPPs) and propose a theoretical model of a pattern-free noncontact thermal modulator based on the mechanical twist between two BP/vacuum multilayer structures. The various symmetric and antisymmetric branches of MASPPs strengthens the PTC, and with it the NFRHT. We also analyze the combined effects of the number of layers and twisted angle. Changing the integral twisted angle and inter-layer twisted angle modulates the positions and intensities of MASPPs. In addition to the twist between the emitter and receiver, the inter-layer twist gives the BP/vacuum multilayer heat transfer system another pathway to modulate the NFRHT. These results pave the way for using two-dimensional anisotropic materials to actively manipulate heat currents.

调制光子传输系数 (PTC) 是调节两个物体之间近场辐射传热 (NFRHT) 的关键因素。扩展先前的研究，我们发现多个体-真空界面可以支持各种共振模式并灵活地放大 PTC。我们展示了黑磷 (BP)/真空多层膜支持耦合的多个各向异性表面等离子体激元 (MASPP)，并基于两个 BP/真空多层结构之间的机械扭曲提出了一种无图案非接触式热调制器的理论模型。MASPP 的各种对称和反对称分支增强了 PTC，并随之增强了 NFRHT。我们还分析了层数和扭曲角度的综合影响。改变整体扭转角和层间扭转角可以调节 MASPPS 的位置和强度。除了发射器和接收器之间的扭曲之外，层间扭曲为 BP/真空多层传热系统提供了另一个调节 NFRHT 的途径。这些结果为使用二维各向异性材料主动操纵热流铺平了道路。