Patent ID: 6922327

Claim:
A method for forming a variable capacitor, comprising: depositing a first layer of an electrically conductive material on a substrate; depositing a release layer formed of an electrically insulating material on a portion of the first electrically conductive layer; depositing a second layer of an electrically conductive material on at least a portion of the release layer; under-cut etching a portion of the release layer under the second layer to release a free portion of the second layer from the release layer, wherein an anchor portion of the second layer remains fixed to the release layer; wherein the inherent stress profile in the second layer biases the free portion of the patterned second layer away from the release layer; wherein, when a bias voltage is applied between the first electrically conductive layer and the second layer, electrostatic forces in the flee portion bend the free portion towards the first electrically conductive layer.