Parallel Ejection of Picoliter Droplets through Micro-Nozzle Array

Abstract

Droplets have been used for high-throughput applications of in chemistry and biology. Parallel manipulation of droplets is significant for utilizing droplets. The transparent nozzles were fabricated and it enable the observation of their movement. The nozzle array can handle parallel droplets, and it is expected to enhance the applications. Here, the sequential filling of droplets into chambers and ejection through a micronozzle array by pneumatic pressure was studied. First, droplets were generated. After the trapping of droplets in chambers, pneumatic pressure to a pneumatic channel was applied for their ejection. Parallel ejection was achieved successfully.