CAPILLARY TUBE PRINTING TIPS FOR MICROARRAY PRINTING

摘要

A microarray contact printing is formed from at least one capillary tube. The tip has concentric reservoir and printing capillary tubes, with a first capillary tube 24 and a second capillary tube 22 having an inner bore 26 with an inner diameter larger than an outer diameter of the first capillar tube 24 so that the second capillary tube 22 partially overlaps a proximal end of the first capillary tube 24. The first capillary tube 24 has a contact surface 36 at a distal end. The inner bore of the first capillary tube 24 is adapted for drawing the printing solution retained in the second capillary tube 22 and depositing a drop of a solution on a printing substrate when the contact surface 36 is moved proximate the substrate.