Water Tweezers for Pariticles Gagging
In recent years, the microfabrication has grown rapidly, and one of the key technique and important basis is pariticle trapping and manipulation. Now, it develops mostly on light, electricity and plasma to make it. The text raises a fire-new concept of water tweezers: when fistulous micro water-jet acts on the face of pariticle, the block of viscosity that causes a change of flow velocity and pressure distribution of fluid microaggregate in boundary layer, will make an abruption on the face of fluid microaggregate and pariticle somewhere, then reverse flow following it, ultimately forms symmetrical karman vortex. The face tension of liquid level, the support force of karman vortex and circumferential flow lift act together on pariticle and give birth to gagging to it, that forming water tweezers finally. Based on the theory analysis to water tweezers, by adopting singularity method, the establishment of stream function and velocity potential model of water-jet provides basis for the trapping to partiricle by using water tweezers.
water tweezers pariticle trapping
Xiaomin Cheng Ye Xu, Lin Zhou Guoliang Zhang Naiyu Shen
School of Mechanical Engineering Ningbo University of Technology Ningbo, 315016, P.R.China 072 class of School of Mechanical Engineering Ningbo University of Technology Ningbo, 315016, P.R.Ch
国际会议
太原
英文
3-8
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）