Patent ID: 6891155
Filing Date: 2005-05-10
Classification: G01N,H01B,H01L

Abstract:
1. A dielectric film comprising: a first layer of an electrically insulating material conformally covering all liquid-contacting portions of an electrically conductive microfluidic substrate having at least one feature within the range of from about 0.1 microns to about 1 mm in size; and a second layer, wherein the second layer is a condensed film deposited conformally on at least all liquid-contacting portions of the first layer; and wherein said first layer is a 25 μm film of oxide to which an intermediate layer of a 1.5 μm film of nitride is added and the second layer is a 0.3 μm film of silicon oxynitride; and wherein the dielectric film is from about 0.1 to about 10 microns thick and is an effective moisture and ion barrier when disposed between said substrate and a liquid having an electrical potential different than the electrical potential of said substrate.