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。
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 aparaffin oil droplet were carried out.Results showed that the aqueous droplet in the oil droplet could be successfully split when the electrical signal with 12.3dBm was suddenly switched off.
作者
王保成
付相庭
章安良
WANG Baocheng FU Xiangting ZHANG Anliang(School of Electronic Information Engineering, Xiangyang Vocational and Technical College, Xiangyang 441021, China Institute of Micro and Nano Electronic System,Ningbo University,Ningbo 315211 ,China School of Electrical and Photoelectronic Engineering,Changzhou Institute of Technology,Changzhou 213002, China)
出处
《压电与声光》
CAS
CSCD
北大核心
2016年第5期811-814,共4页
Piezoelectrics & Acoustooptics
基金
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)
