Patent ID: 6242266
Filing Date: 2001-06-05
Classification: B01J,B01L,C40B,G01N

Abstract:
A method of fabricating an array of biopolymers on a substrate using a biopolymer or biomonomer fluid, and using a fluid dispensing head having:at least one jet which can dispense droplets onto a substrate, the jet including a chamber with an orifice, and including an ejector which, when activated, causes a droplet to be ejected from the orifice;the method comprising:(a) positioning the head with the orifice facing the substrate;(b) dispensing multiple droplets of the biopolymer or biomonomer fluid from the head so as to form an array of droplets on the substrate;(c) directing a gas flow through a venturi which has a throat opening communicating with the dispensing head chamber;(d) varying gas flow resistance on an outlet side of the venturi, to alter the chamber pressure.