Authentication using graphene based devices as physical unclonable functions
US8766258B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2012 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Dec 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to secure devices having a physical unclonable function and methods of manufacturing such secure devices. One device includes at least one graphene layer representing a physical unclonable function and a measurement circuit for measuring at least one property of the at least one graphene layer. Another device includes at least a first graphene layer and a second graphene layer representing a physical unclonable function, where one of the graphene layers has been subjected to a variability enhancement such that a measurable property is different for each of the layers. A method includes providing a substrate for a secure device and providing at least one graphene layer on the substrate, the at least one graphene layer representing a physical unclonable function. The providing of the at least one graphene layer includes applying at least one variability enhancement to the at least one graphene layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.