Physical unclonable function (puf) including a plurality of nanotubes, and method of forming the puf
AssigneeInternational Business Machines Corporation
InventorsQing CAO, Kangguo CHENG, Zhengwen LI, Fei LIU
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Abstract
A physical unclonable function (PUF) includes a first plurality of carbon nanotubes (CNTs) formed in a first direction, a second plurality of CNTs formed on the first plurality of CNTs in a second direction which is substantially perpendicular to the first direction, and a plurality of contacts connected at an end portion of the first plurality of CNTs and the second plurality of CNTs.
Claims20
A physical unclonable function (PUF) comprising:
- a first plurality of carbon nanotubes (CNTs) formed in a first direction;
- a second plurality of CNTs formed on the first plurality of CNTs in a second direction which is substantially perpendicular to the first direction;
- and
- a plurality of contacts connected at an end portion of the first plurality of CNTs and the second plurality of CNTs.
A method of forming a physical unclonable function (PUF), the method comprising:
- forming a first plurality of carbon nanotubes (CNTs) formed in a first direction;
- forming a second plurality of CNTs formed on the first plurality of CNTs in a second direction which is substantially perpendicular to the first direction;
- and
- forming a plurality of contacts connected at an end portion of the first plurality of CNTs and the second plurality of CNTs.
A device for reading a physical unclonable function (PUF) which is affixed to an object and includes a plurality of crossed carbon nanotubes (CNTs), comprising:
- a current source for applying a current to a the plurality of crossed CNTs;
- and
- a resistance detector for detecting a junction resistance for the plurality of crossed CNTs.
Dependencies are inferred from the claim text.