Size-variable droplet actuation by interdigitated electrowetting electrode

作者：Chen Jianfeng; Yu Yuhua; Li Jia; Lai Yongjun; Zhou Jia^*

来源：Applied Physics Letters, 2012, 101(23): 234102.

DOI：10.1063/1.4769433

We propose electrowetting on dielectric (EWOD) electrodes to actuate size-variable droplets. By using interdigitated fingers and maximizing them in optimized construction, we can control droplets in different sizes with the same electrode array automatically. We both do the theory calculation and experiment verification to study the electrode with rectangular fingers. It is found that the electrode with triangle fingers can actuate droplets as small as 1/36 of that actuated by conventional square electrode array. It can actuate large droplets more efficiently than rectangular fingers. This work provides an approach to achieve multifunctional EWOD devices in the future.

• 出版日期2012-12-3
• 单位复旦大学