| 基于声表面波油包水微液滴分裂研究 |
| |
| 引用本文： | 王保成,付相庭,章安良. 基于声表面波油包水微液滴分裂研究[J]. 压电与声光, 2016, 38(5): 811-814 |
| |
| 作者姓名： | 王保成 付相庭 章安良 |
| |
| 作者单位： | （1.襄阳职业技术学院 电子信息工程学院，湖北 襄阳 441021；2.宁波大学 微纳电子系统研究所, 浙江 宁波 315211；,3.常州工学院 电气与光电子工程学院，江苏 常州 213002） |
| |
| 基金项目： | 常州工学院科研基金资助项目（YN1404）；常州工学院大学生创新基金资助项目（J140029）；浙江省重点学科基金资助项目（Xkl11077） |
| |
| 摘 要： | 提出了声表面波(SAW)实现油包水微液滴的分裂方法,并在128°YX-LiNbO3基片上研制了分裂油包水微液滴的微器件。在压电基片上采用微电子工艺制作叉指换能器,其激发的SAW部分作用于油包水微液滴,瞬间降低电信号幅度,油相内水微液滴在惯性力作用下发生分裂,油相微液滴由于较大的表面张力发生形变而不分裂。以石蜡油包裹蓝色水相微液滴为研究对象,进行了油包水微液滴分裂实验和理论分析,结果表明,当电信号从功率为12.3dBm瞬间关断时,可实现油相内水微液滴分裂。
|
| 关 键 词： | 声表面波(SAW) 液滴 叉指换能器(IDT) 分裂 辐射 |
Study on Splitting the Aqueous Droplet Encapsulated by Oil Based on Surface Acoustic Wave |
| |
| WANG Baocheng,FU Xiangting and ZHANG Anliang. Study on Splitting the Aqueous Droplet Encapsulated by Oil Based on Surface Acoustic Wave[J]. Piezoelectrics & Acoustooptics, 2016, 38(5): 811-814 |
| |
| Authors: | WANG Baocheng FU Xiangting ZHANG Anliang |
| |
| Abstract: | A method for splitting the aqueous droplet encapsulated by an oil droplet was presented in this paper. A micro device on 128°YX LiNbO3 substrate has been developed for splitting the aqueous droplet encapsulated by an oil droplet. An interdigital transducer for exciting surface acoustic wave was fabricated on the 128°YX LiNbO3 substrate using micro electric technology. The aqueous droplet would be split by instantaneously decreasing the power of the electrical signal due to the inertia force from surface acoustic wave, while the oil droplet was not split due to greater surface tension than the acoustic radiation force. The theoretical analysis and splitting experiments of a blue aqueous droplet encapsulated by a paraffin oil droplet were carried out. Results showed that the aqueous droplet in the oil droplet could be successfully split when the electrical signal with 12.3 dBm was suddenly switched off. |
| |
| Keywords: | |
|
| 点击此处可从《压电与声光》浏览原始摘要信息 |
|
点击此处可从《压电与声光》下载免费的PDF全文 |
