Patent ID: 9162518
Filing Date: 2015-10-20
Classification: B01J,B44C,B81C,G03F,H01L

Abstract:
1. A method for producing microparticles suitable as support for fluorescent assays, comprising the steps of: (a) providing a wafer having a sandwich structure comprising a bottom layer, an insulator layer lying over the bottom layer and a top layer lying over the insulator layer; (b) etching the top layer to delineate microparticles which are thereby formed on the insulator layer; (c) etching away the insulator layer to remove all of the insulator layer; (d) depositing a layer on the wafer that is holding the microparticles, whereby mechanical forces that are capable of detaching the microparticles from the wafer are avoided; and (e) lifting-off the microparticles from the wafer, wherein step (d) occurs after step (c) and before step (e).