Patent ID: 6825127
Filing Date: 2004-11-30
Classification: B81B,B81C

Abstract:
A method of fabricating a microstructure for micro-fluidics applications, comprising the steps of:forming a layer of etchable material on a substrate; forming a mechanically stable support layer over said etchable material; performing an anisotropic etch through a mask to form a pattern of holes extending through said support layer to said etchable material and lving along a projected oath of a continuous micro-channel to be formed within said etchable material, performing an isotropic etch through each said hole to form a corresponding cavity in said etchable material under each said hole, said corresponding cavity extending under said support layer to communicate with an adjacent said cavity whereby a series of said communicating cavities form said micro-channel; and forming a further layer of depositable material over said support layer until overhanging portions of said depositable layer meet to close each said hole.