Abstract
We present two-dimensional micro-chip for electrically-induced bubble injection. The electrodes which are patterned and integrated in the limited space enable to eject multiple-high-speed mono-dispersed bubbles. For the present study, fundamental processing method to fabricated two-dimensional chip is presented. The novelty of injection mechanism, which is produced by the closed space at the tip of the electrode, is fabricated by original packaging techniques. Multiple injections of high-speed bubbles in microfluidic chip provide efficient high-density injection. This study has possibility to control the area and density of injection by two-dimensional or three-dimensional injection techniques in the limited space and which can contribute to a wide range of applications such as gene therapy and other biomedical treatment.