A Method for Micro-spheres Manipulation Based on Capillary Force Control

To utilize the adhesion forces and avoid the design complexity derived from the electrochemical treatment of operating tools, a method for micro-objects manipulation based on the capillary force is presented. The pickup and release model of micromanipulation were established. The manipulation scheme was performed by mechanical motion to change the capillary force generated by the liquid medium between the tool and micro-sphere, so the micro-sphere can be picked up and released successfully. The experiments about sub-millimeter stannum spheres demonstrated the simplicity and feasibility of this method.