Electrowetting interfacial tension measurement system

被引：0
|
作者：
Choi, Seungyul [1 ]
Lee, Junghoon [1 ]
机构：
[1] Seoul Natl Univ, Dept Mech Engn, WCU, Seoul, South Korea
来源：
2015 IEEE SENSORS | 2015年
关键词：
electrowetting; surface tension; interface;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
It is reported that electrical monitoring of interfacial tension by the electrowetting on dielectric (EWOD). The contact angle of a sessile oil droplet in conducting liquid was calculated with an capacitance measurement on a single chip. Contact angle can be measured at different operational voltage and it is used to calculate the interfacial tension by the Young-Lippmann equation. The results were in agreement with an optical analysis. It was performed by a conducting liquid (Na2SO4) / oil (n-decane) system with a non-ionic surfactant (Tween 80) to change the interfacial tension. The deviation of the contact angle and interfacial tension from the values determined by the optical analysis were 2.8 degrees and less than 1 mN/m, respectively.
引用
收藏
页码：1023 / 1025
页数：3
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