By using an impulsive force from laser as a driving force, it has become possible to discharge ultra high speed microjets and highly viscous liquids which were difficult for the conventional ink jet system. These novel techniques help develop various applications, such as, needle-free medical injection and new generation ultrafast inkjet printing.

Besides observing the temporal evolution and impacting of the micro droplet, Photron high speed polarization camera system utilizes the birefringence retardation of the polarized light to visualize the stress distribution in biomimetic materials in order to help develop the needle-free medical injection.