A new concept of electrode shape and arrangement is proposed to develop a multi-stage plasma synthetic jet actuator for the low-voltage operation. Exposed and covered electrodes, which have complicated shapes due to electrical wiring to the inner side of annular electrodes, are fabricated by an inkjet printing process using a silver nanoparticle-based ink. The plasma synthetic jet actuator developed in this study can be operated at 1000 V or lower. The discharge spreads uniformly from only the inner side of each annular electrode, inducing a unidirectional ionic wind toward the center of the coaxial electrode circle. Particle image velocimetry measurements reveal that the wall-normal jet induced by the multi-stage plasma synthetic jet actuator can be characterized as an axisymmetric free shear flow. The electrical and mechanical characteristics are similar to the linear-type dielectric-barrier-discharge plasma actuators. We also demonstrate that the printed electronics technique is suitable for the generation of arbitrary electrode shapes and arrangements and hence is a powerful tool for the realization of industrial applications of active airflow control devices using atmospheric pressure discharge.

中文翻译：

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使用印刷电子设备制造多级等离子合成射流致动器

提出了电极形状和布置的新概念，以开发用于低压操作的多级等离子体合成射流致动器。通过使用银纳米粒子基油墨的喷墨印刷工艺来制造由于暴露于环形电极的内侧而具有复杂形状的暴露电极和被覆盖电极。在这项研究中开发的等离子合成射流执行器可以在1000 V或更低的电压下运行。放电仅从每个环形电极的内侧均匀扩散，从而向着同轴电极圆的中心感应出单向离子风。粒子图像测速仪测量结果表明，多级等离子体合成射流致动器引起的壁法向射流可表征为轴对称自由剪切流。电气和机械特性类似于线性型介质阻挡放电等离子体致动器。我们还证明了印刷电子技术适合于生成任意电极形状和布置，因此是使用大气压放电实现有源气流控制装置在工业上实现的有力工具。