Patent ID: 9214622
Filing Date: 2015-12-15
Classification: H01L

Abstract:
1. Apparatus, comprising: a support structure including an internal cavity within the support structure; and an elastic membrane extending to divide the internal cavity into a first chamber and a second chamber, the elastic membrane including a pin hole extending there through to interconnect the first chamber to the second chamber; wherein the elastic membrane includes a first electrode film and a second electrode film separated by an insulating film, said elastic membrane configured to respond to an application of bias current of a first polarity to the first and second electrode films by bending in a direction towards the first chamber to increase a diameter of the pin hole; and wherein said elastic membrane is further configured to respond to application of bias current of a second, opposite, polarity to the first and second electrode films by bending in a direction towards the second chamber to increase the diameter of the pin hole.