Patent ID: 6955881
Filing Date: 2005-10-18
Classification: B01J,B01L,B82Y,C40B,G01N

Abstract:
1. A method for producing biochips by arranging one or more sites of DNA, RNA or protein in an array on a substrate having a front side and a back side, wherein DNA, RNA or protein chips are produced by a process comprising the steps of: positioning at least one pin under, then into a cleaning fluid unit to clean said at least one pin; repositioning said at least one pin under, then into a solution unit containing a solution of DNA, RNA or protein to provide a droplet of solution on said at least one pin; repositioning said at least one pin under the substrate; raising said at least one pinto contact the back side of said substrate; lowering said at least on pin whereby said droplet is transferred to the back side of said substrate and hangs down from said substrate due to gravity; applying an electric field to stretch DNA, RNA or protein in the solution toward a positive electrode under said substrate; and repeating the above steps to produce a biochip.