Force, pressure, or stiffness measurement or calibration using graphene or other sheet membrane

US8418547B2 · kind B2 · utility

Assignee

• The Trustees of Columbia University in the City of New York · US

Inventors

• Jeffrey W. Kysar · New York, US
• James Hone · New York, US
• Changgu Lee · New York, US
• Xiaoding Wei · New York, US

Key dates

• Filing date: Aug 6, 2009
• Grant date: Apr 16, 2013
• Expiry date: Sep 2, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B81B2201/0292
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

Force, pressure, or stiffness measurement or calibration can be provided, such as by using a graphene or other sheet membrane, which can provide a specified number of monolayers suspended over a substantially circular well. In an example, the apparatus can include a substrate, including a substantially circular well. A deformable sheet membrane can be suspended over the well. The membrane can be configured to include a specified integer number of one or more monolayers. A storage medium can comprise accompanying information about the suspended membrane or the substrate that, with a deflection displacement response of the suspended membrane to an applied force or pressure, provides a measurement of the applied force or pressure.