University of Michigan

Parag Deotare

Jinsang Kim

Kanak Datta

Da Seul Yang

Che-Hsuan Cheng

Zidong Li

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.

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

The present disclosure relates to non-destructive methods for collecting data from three-dimensional objects. Method include directing one or more interrogating beams of light towards a surface of a three-dimensional object, where the three-dimensional object includes one or more underlying surfaces, and one or more materials having excitonic properties are disposed on the surface of the three-dimensional object; capturing, using an imaging device, optic response of the one or more materials having excitonic properties to the one or more interrogation beams; and computing, using the imaging device, a distance between the one or more underlying surfaces and the one or more materials having excitonic properties, where the optic response of the one or more materials having excitonic properties is a function of the distance between the one or more materials having excitonic properties and the one or more underlying surfaces.

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Ann Arbor, MI, United States of America

Parag Deotare