Core-shell particles for anti-tampering applications
US9859226B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2016 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Dec 13, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L23/573
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
Devices and methods for resisting or preventing physical tampering of electronic components are described. A tamper resistant apparatus comprises a tampering sensor having a surface at which a first and second conductive portion are disposed. A core-shell particle (or a plurality of particles) is disposed on the surface of the tampering sensor. The core-shell particle has a liquid metallic core and a shell surrounding the core. When tampering occurs, forces associated with the tampering cause the core-shell particle to rupture. The released liquid metallic core material can form a conductive pathway between the first and second conductive portions of the tampering sensor. The tampering sensor triggers a security response when the first and second conductive portions are electrically connected to each other by the metallic material from the ruptured core-shell particle(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.