変形後の形状が調整可能な切り紙キラルメタマテリアル構造

抄録

In this paper, we report a kirigami metamaterial structure that can adjust the gradient of the deformation of the structure. Slits were formed on a polyimide substrate by a laser cutter to fabricate kirigami structures, and aluminum was deposited on the kirigami pattern with a stencil mask. As a structural characteristic, we fabricated several devices with different slit lengths at different locations in the same structure and measured the amount of deformation against external force. It was found that it was possible to adjust the gradient of the wall surface independently for each slit by arbitrarily varying the length of the slit. The transmittance of the proposed device was measured, and the transmittance of the component perpendicular to the direction of incidence increased. It was confirmed that the proposed device has circular dichroism due to deformation. This kirigami can adjust the shape of the 3D metamaterial to show strong circular dichroism and weak circular dichroism frequencies.