Patent ID: 6555201
Filing Date: 2003-04-29
Classification: B81B,G02B,Y10S,Y10T

Abstract:
A method for fabricating a microelectromechanical bearing, said method comprising the steps of:forming a sacrificial layer on a substrate, said step comprising; forming a first sacrificial sublayer on said substrate wherein said first sacrificial sublayer has a first etch rate; and forming a second sacrificial sublayer on said first sacrificial sublayer, such that the first sacrificial layer is adjacent to the substrate and the second sacrificial layer is opposite said substrate, wherein said second sacrificial sublayer has a second etch rate that is greater than the first etch rate of the first sacrificial layer; isotropically etching a partial hole through said second sacrificial sublayer down to said first sacrificial sublayer, wherein said partial hole does not expose said substrate; filling said partial hole with a bearing material; and removing said first and second sacrificial sublayers.