Self-erasable and rewritable optoexcitonic platform for anti-tamper hardware

US12406947B2 · kind B2 · utility

Assignee

• THE REGENTS OF THE UNIVERSITY OF MICHIGAN · US

Inventors

• Jinsang Kim · Ann Arbor, US
• Parag Deotare · Ann Arbor, US
• Da Seul Yang · Ann Arbor, US
• Che-Hsuan Cheng · Ann Arbor, US

Key dates

• Filing date: May 22, 2023
• Grant date: Sep 2, 2025
• Expiry date: Dec 22, 2043

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L23/573
• WIPO field: Semiconductors
• WIPO sector: Electrical engineering

Abstract

An anti-tamper module includes a substrate and a photoisomerization (PI) layer formed on the substrate. The PI layer comprises molecules configured to transition from a first state to a second state in response to exposure to a first type of light and transition from the second state to the first state in response to exposure to a second type of light, and transitioning a selected portion of the PI layer to the first state while surrounding portions of the PI layer remain in the second state causes physical deformation of the PI layer. An excitonic layer is arranged on the PI layer. An electrical characteristic of the excitonic layer is sensitive to strain caused by the physical deformation of the PI layer such that an excitonic property of the excitonic layer changes in a region corresponding to the selected portion of the PI layer.