Patent ID: 7784911
Filing Date: 2010-08-31
Classification: B01J,B01L,C40B

Abstract:
1. An apparatus for printing a biomolecular droplet onto a substrate using an electric charge concentration effect, the apparatus comprising: an electric field forming electrode which is needle-shaped, is made of a conductive material, is disposed vertically, and comprises an accommodating area which accommodates the biomolecular droplet and a nozzle formed on a bottom end of the accommodating area through which the biomolecular droplet is discharged; a solid substrate which is disposed below the electric field forming electrode, is electrically grounded, and comprises a target surface onto which the biomolecular droplet discharged from the nozzle of the electric field forming electrode is deposited and a moisture thin film formed thereon by dispersing water into solid components on a top surface of the substrate; and an open circuit type voltage applying unit which is electrically connected to the electric field forming electrode, applies a charge to the electric field forming electrode, and causes the biomolecular droplet to be ejected onto the target surface of the substrate due to a force generated by the charge in the electric field forming electrode and a charge induced on the substrate by the charge in the electric field forming electrode.