Abstract
We developed a method of shooting a micro ice droplet for on-chip mechanochemical reaction with collision to a target. The micro ice droplet shot from a microchannel was further accelerated by Helium gas flow. Ice droplet velocity of 200 m/s was achieved, which corresponds to GPa impact force sufficient to chemical activation. This method will provide microscale chemical operations such as accelerating reactions by oriented kinetic energy and noncatalytic reactions.