Wirelessly powered dielectrophoresis (DEP) of metal oxide particles was performed using a spark‐gap Tesla coil (TC). The main contribution of this work is the simplification of the conventional DEP setup that requires attaching wires directly to the electrodes. Wireless power from the TC generates a high output frequency and voltage, which corresponds to that used for the DEP. Therefore, a spark‐gap TC was built and utilized to conduct the DEP process. Metal oxides (ZnO and Fe₂O₃) were used as targets for the assembly. The results showed that the wirelessly powered DEP technique via a TC was successful in assembling the metal oxide particles. Positive and negative DEP phenomena were observed. Positive DEP occurred during ZnO assembly, making particles chain grow 0.92 mm toward the sparks within 60 s. Negative DEP was observed during Fe₂O₃ assembly, where the repulsion of particles formed a void around the sparks with a 1.45 mm radius. The mechanism of this wireless DEP system is discussed.

中文翻译：

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使用火花隙特斯拉线圈的金属氧化物颗粒的无线介电电泳

使用火花隙特斯拉线圈（TC）进行金属氧化物颗粒的无线介电电泳（DEP）。这项工作的主要贡献是简化了传统的DEP装置，该装置需要将导线直接连接到电极上。TC产生的无线电力会产生较高的输出频率和电压，与DEP所使用的频率和电压相对应。因此，建立了一个火花隙热电偶，并用于进行DEP过程。金属氧化物（ZnO和Fe ₂ O ₃）用作组装目标。结果表明，通过TC进行的无线DEP技术成功地组装了金属氧化物颗粒。观察到正和负DEP现象。在ZnO组装过程中发生了正DEP，使粒子链在60 s内朝着火花生长0.92 mm。在Fe ₂ O ₃组装过程中观察到负DEP ，其中颗粒的排斥在火花周围形成了一个空隙，半径为1.45 mm。讨论了该无线DEP系统的机制。