Patent ID: 9601234
Date: 2017-03-21
CPC Classifications: B05D,B81B,B81C,C25D,H01B,Y10T

Claim:
1. A method of making a three-dimensional porous micromechanical device, the method comprising: providing a substrate having a conductive pattern on a surface thereof, the substrate comprising a patterned portion of the surface covered by the conductive pattern and an unpatterned portion of the surface not covered by the conductive pattern; after providing the substrate, depositing a colloidal solution comprising a plurality of microparticles onto the surface of the substrate, the microparticles assembling into a lattice structure on the patterned and unpatterned portions of the surface; infiltrating interstices of the lattice structure with a conductive material, the conductive material propagating through the interstices in a direction away from the substrate to reach a predetermined thickness and spanning an area of the surface overlaid by the conductive pattern; removing the microparticles to form voids in the conductive material, thereby forming a conductive porous structure having the predetermined thickness and a lateral size and shape of the conductive pattern, and removing only a portion of the substrate to expose an underside of the conductive pattern, thereby forming the three-dimensional porous micromechanical device.