Electrowetting-on-liquid-dielectric (EWOLD) enables droplet manipulation with a few volts
Electrowetting-on-liquid-dielectric (EWOLD) enables droplet manipulation with a few volts
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发表时间：
2022
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通讯作者：
Ken Yamamoto;S. Takagi;Y. Ichikawa;M. Motosuke
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作者：
Ken Yamamoto;S. Takagi;Y. Ichikawa;M. Motosuke
电润湿有可能实现独立的护理点（POC）设备。在这里，我们报告了一种新的液滴操作方法“液体-介质电润湿（EWOLD）”。该方法将液滴操纵电压降低到可以由4节AA电池提供的水平。它是通过去除固体介电层并用液体介电膜代替它来实现的。通过尺度分析和液滴速度测量，解释了低压驱动的机理。因此，我们报道了一个5 μ l的液滴可以被5 V操纵。
Electrowetting has a potential to realize stand-alone point-of-care (POC) devices. Here we report a novel droplet manipulation method “electrowetting-on-liquid-dielectric (EWOLD)”. The method reduces the droplet manipulation voltage to a level that the voltage can be supplied by four AA batteries. It is achieved by removing the solid dielectric layer and replacing it with a liquid dielectric film. The mechanism of the low-voltage actuation is explained by coupling a scaling analysis and droplet velocity measurements. Consequently, we report that a 5-μL droplet can be manipulated by 5 V.