Patent ID: 9731957
Date: 2017-08-15
CPC Classifications: B81B

Claim:
1. A polymer anchored microelectromechanical system (MEMS) cantilever, comprising: a base; and a cantilever beam projecting from the base, consisting of: wherein the base consists of polymer, and each of the inorganic material structural layer and the inorganic material encapsulating and immobilising layer is formed of a material that is selected from silicon nitride, silicon oxide, silicon carbide or diamond; and wherein the cantilever beam is released from a substrate by etching a sacrificial layer between the cantilever beam and the substrate using a chrome etchant to form the cantilever devoid of the substrate; and wherein the sacrificial layer comprises an adhesion layer consisting of a first chromium layer deposited on the substrate, and a fast etching layer consisting of a gold layer deposited on the first chromium layer and a second chromium layer deposited on the gold layer.