Fig. 2
From: Patternable particle microarray utilizing controllable particle delivery
On-demand particle transfer utilizing pneumatic valve operation. a Depending on the applied pneumatic pressure, the valve wall is either deflected (“ON” state) or not (“OFF” state). These two states are switchable by controlling the integrated solenoid valve. b Particle trapping. Single particle is trapped at the narrow channel created by valve deflection. c Particle releasing. Removing the pneumatic pressure allows the trapped particle to be released and transferred in an on-demand manner