A stretchable chiral metamaterial with Au nanoslits and L-shaped and T-shaped Au patterns (SCMM-NLT), which can simultaneously produce circular dichroism (CD) and asymmetric transmission (AT) effects for circularly polarized waves in the mid-infrared region, is proposed. The peak values of CD and AT effects reach 20.4% and ${-}{20.4}\%$ at the resonance wavelength of 23.4 µm, respectively, which originate from the excitation of the bonding and antibonding modes. We use the transmission matrix to analyze the simultaneous appearance of CD and AT effects. By stretching SCMM-NLT, the bands of CD and AT occur at the redshift phenomenon, which is attributed to the decrease of Coulomb force between the positive and negative charge accumulated at both ends of the structure. All results are calculated by the FEM-based software COMSOL Multiphysics. In the future, our findings could be applied to wearable electronic devices, such as refractive index sensors.

中文翻译：

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可伸缩手性超材料中圆二色性和不对称传递的共存

具有Au纳米缝，L形和T形Au图案（SCMM-NLT）的可拉伸手性超材料，可以同时为中红外区域的圆偏振波产生圆二色性（CD）和非对称透射（AT）效应，被提议。CD和AT效应的峰值分别达到20.4％和$ {-} {20.4} \％$分别在23.4 µm的共振波长处发生，这是由键合和反键合模式的激发引起的。我们使用传输矩阵来分析CD和AT效果的同时出现。通过拉伸SCMM-NLT，CD和AT的带出现红移现象，这归因于在结构两端累积的正电荷和负电荷之间库仑力的减小。所有结果均由基于FEM的软件COMSOL Multiphysics计算得出。将来，我们的发现可能会应用于可穿戴电子设备，例如折射率传感器。