Lee Minjae, Lee Sukwon, Lim Sungjoon
School of Electrical and Electronics Engineering, College of Engineering, Chung-Ang University, 221, Heukseok-Dong, Dongjak-Gu, Seoul 156-756, Korea.
Sensors (Basel). 2021 Apr 26;21(9):3026. doi: 10.3390/s21093026.
Electromagnetic responses are generally controlled electrically or optically. However, although electrical and optical control allows fast response, they suffer from switching or tuning range limitations. This paper controls electromagnetic response by mechanical transformation. We introduce a novel kirigami-inspired structure for mechanical transformation with less strength, integrating a shape memory alloy actuator into the kirigami-inspired for mechanical transformation and hence electromagnetic control. The proposed approach was implemented for a reconfigurable antenna designed based on structural and electromagnetic analyses. The mechanical transformation was analyzed with thermal stimulus to predict the antenna geometry and electromagnetic analysis with different geometries predicted antenna performance. We numerically and experimentally verified that resonance response was thermally controlled using the kirigami-inspired antenna integrated with a shape memory alloy actuator.
电磁响应通常通过电或光来控制。然而，尽管电控制和光控制能够实现快速响应，但它们存在开关或调谐范围的限制。本文通过机械变换来控制电磁响应。我们引入了一种受折纸启发的新型结构用于机械变换，这种结构所需强度较小，将形状记忆合金致动器集成到受折纸启发的结构中以实现机械变换，进而实现电磁控制。所提出的方法应用于基于结构和电磁分析设计的可重构天线。通过热刺激分析机械变换以预测天线几何形状，利用不同几何形状的电磁分析来预测天线性能。我们通过数值模拟和实验验证了，使用集成了形状记忆合金致动器的受折纸启发的天线能够实现对共振响应的热控制。
