Overview
- Researchers from the University of Arkansas and the University of Michigan report the results in the Journal of Vacuum Science & Technology B (DOI: 10.1116/6.0004618).
- Arrays of multilayer graphene on n‑type silicon were fabricated with patterned thermal oxide and gold pads, then wired in series to reach the voltages required by the sensor.
- The system removed both a power‑management chip and a rechargeable battery by running directly from three storage capacitors assigned to distinct tasks.
- Sensor power consumption was reduced to the nanowatt range, with low‑power design led by David Blaauw’s Michigan team and graphene device development led by Paul Thibado’s Arkansas group; Ashaduzzaman is first author.
- Next steps include adding a graphene‑based kinetic energy harvester to move toward multi‑modal ambient power for long‑life autonomous IoT sensors.