Patent ID: 8975193
Filing Date: 2015-03-10
Classification: B81B,B81C

Abstract:
1. A method of making a microfabricated device, comprising: depositing a first metal layer on a substrate; patterning the first metal layer to provide bottom electrodes of an electrostatic actuator; depositing a first insulating layer over said first metal layer; patterning said first insulating layer; depositing a first structural polymer layer over said first insulating layer; depositing a second metal layer over said first structural polymer layer; patterning said second metal layer to form top electrodes of the electrostatic actuator; depositing a second insulating layer over said second metal layer; planarizing said second insulating layer; pattering said second insulating layer; performing an isotropic etch of said first structural polymer layer through said second insulating layer and said second metal layer to undercut said second metal layer to provide gaps between said top and bottom electrodes; bonding a first pre-formed structural polymer layer to said planarized second insulating layer to form a floor of at least one microfluidic channel; and bonding additional pre-formed structural polymer layers, at least one of which has been previously patterned, in the form of a stack over said planarized second insulating layer to define said at least one microfluidic channel.