A lead–zirconate–titanate (PZT) thin film additively manufactured on a flexible substrate is demonstrated in this article as an actuator. PZT nano-particles (NPs) are first fabricated via a hydrothermal process. The NPs are then suspended in ethanol with a polymer additive to form PZT ink. The PZT ink is later drop-cast on a flexible substrate with two electrode designs for evaluation: sandwich electrodes and interdigitated electrodes (IDEs). The design of sandwich electrodes is difficult to realize because silver electrodes cannot be properly printed onto the PZT film with good conductivity and dimension accuracy. In contrast, a pair of IDEs is successfully inkjet printed on polyethylene terephthalate (PET) tape. Then the PZT ink is drop-cast to form a PZT film. Sinusoidal voltage applied over the electrodes drives the device into resonance serving as a resonator. For hard-disk drives, the 3-D printed PZT films can be used as dual-stage actuators or as absorbers to actively or passively reduce flex cable vibration.

中文翻译：

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用于硬盘驱动器应用的增材制造的锆钛酸铅薄膜

本文演示了在柔性基板上增材制造的锆钛酸铅 (PZT) 薄膜作为致动器。PZT 纳米颗粒 (NPs) 首先通过水热工艺制造。然后将纳米颗粒悬浮在含有聚合物添加剂的乙醇中以形成 PZT 墨水。随后将 PZT 墨水滴铸在具有两个电极设计的柔性基板上进行评估：夹层电极和叉指电极 (IDE)。夹层电极的设计很难实现，因为银电极不能以良好的导电性和尺寸精度正确印刷到 PZT 薄膜上。相比之下，一对 IDE 成功地喷墨打印在聚对苯二甲酸乙二醇酯 (PET) 胶带上。然后滴注 PZT 油墨以形成 PZT 薄膜。施加在电极上的正弦电压驱动器件进入谐振，用作谐振器。对于硬盘驱动器，3D 打印的 PZT 薄膜可用作双级致动器或吸收器，以主动或被动减少柔性电缆振动。