Patent ID: 6861205
Filing Date: 2005-03-01
Classification: B33Y,B81C

Abstract:
1. A method for fabricating three dimensional structures comprising the steps of a. providing a first layer of a photosensitive material of epoxy resin of bisphenol A glycidyl ether polymer) (CAS 28906-96-9) and a photoacid generator of mixed triarylsulfonium/hexafluoroantimonate salt (CAS 89452-37-9/CAS 71449-78-0), b. applying an external stimulus of UV light to said first layer, thereby creating voids in said first layer, c. removing any material present in said voids, d. providing a layer of a sacrificial material of a fluropolymer within at least a portion of said voids, e. providing a second layer of photosensitive material of epoxy resin of bisphenol A glycidyl ether polymer) (CAS 28906-96-9) and a photoacid generator of mixed triarylsulfonium/hexafluoroantimonate salt (CAS 89452-37-9/CAS 71449-78-0) on top of said layer of a sacrificial material and in contact with at least a portion of said first layer; f. applying an external stimulus of UV light to said second layer, thereby bonding said first to said second layer, and g. removing said sacrificial layer by dissolving said sacrificial layer in carbon dioxide.