The effect of adding texture to increase the deformation of a bilayer actuator by a factor of over 100 was demonstrated. A bilayer actuator is driven by the difference in thermal deformation. Therefore, two films or plates with a large difference in thermal expansion coefficient are required. The newly developed textured film actuator (TFA) obtained large deformation even in a case involving a combination of two films with a small difference in thermal expansion coefficient. The TFA was fabricated by transferring the texture when laminating two PI films with different coefficients of thermal expansion. A TFA with thin-film electrodes was heated by applying electric power. Thereby, it unfolded from a curled state. The maximum generated force and curvature of the TFA were 7.4 mN and 0.19 mm⁻¹, respectively, at 0.38 W. The manufacturing process for the TFA is simple and convenient, as it does not require adhesives or special materials. In thermal drive bilayer actuator fabrication, the range of material selection is expanded substantially. In addition, large deformations are generated with less energy. Therefore, the energy consumption is likely to be reduced. © 2024 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

中文翻译：

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显着增加双层薄膜热变形的纹理及其在执行器中的应用

证明了添加纹理可将双层致动器的变形增加 100 倍以上的效果。双层致动器由热变形差异驱动。因此，需要热膨胀系数差异较大的两片薄膜或板。新开发的纹理薄膜致动器（TFA）即使在热膨胀系数差异较小的两种薄膜组合的情况下也能获得较大的变形。 TFA是通过层压两片具有不同热膨胀系数的PI薄膜时转移纹理来制造的。通过施加电力来加热具有薄膜电极的TFA。由此，其从卷曲状态展开。 TFA在0.38W时的最大产生力和曲率分别为7.4mN和0.19mm ^-1。TFA的制造过程简单方便，因为它不需要粘合剂或特殊材料。在热驱动双层致动器制造中，材料选择的范围显着扩大。此外，可以用更少的能量产生大的变形。因此，能源消耗可能会减少。 © 2024 日本电气工程师协会和 Wiley periodicals LLC。