Volume and concentration identification by using an electrowetting on dielectric device
Volume and concentration identification by using an electrowetting on dielectric device
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通过在介电装置上使用电润湿来识别体积和浓度
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
R. J. Baker
中科院分区：
文献类型：
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作者：
Yiyan Li;Hongzhong Li;R. J. Baker
提出了一种超灵敏电介质润湿（EWOD）电容测量系统。24位集成电路（IC）电容数字（CDC）传感器用于将液滴体积和浓度变化引起的电容变化转换为数字数据。基于2.3mm × 2.3mm印刷电路板（PCB）的电极对用于感测模拟电容变化。利用CDC系统测试了纯水和NaCl溶液的电容。使用桌面绘图软件来固定液滴的位置，以获得10 IF的小电容偏差。结果表明，CDC系统可以解决添加0.1微升液滴或增加1%的NaCl浓度引起的电容变化。传感器的数字输出与微控制器接口友好。
An ultra-sensitive electrowetting on dielectric (EWOD) capacitance measurement system is proposed in this study. A 24-bit integrated circuit (IC) capacitance-to-digital (CDC) sensor is used to convert the capacitance changes caused by variations in droplet volume and concentration to digital data. A 2.3 mm by 2.3 mm printed circuit board (PCB) based electrode pair is used to sense the analog capacitance change. The capacitance of pure water and NaCl solutions are tested by the CDC system. Desktop-drawing software is used to fix the position of the droplet to obtain a small capacitance deviation of 10 IF. Result shows the CDC system can resolve the capacitance changes caused by adding 0.1 micro-liter droplets or by increasing the NaCl concentration by 1%. The digital output of the sensor is interface-friendly to microcontrollers.
影响因子：
6.1
作者：
Gong, Jian;Kim, Chang-Jin (CJ)
通讯作者：
Kim, Chang-Jin (CJ)