Cyclops: A Nanomaterial-based, Battery-Free Intraocular Pressure (IOP) Monitoring...
Talkat 21st USENIX Symposium on Networked Systems Design and Implementation (NSDI '24) · 2024-04-16..04-18·
summary
Cyclops is a battery-free contact lens that embeds a three-layer antenna (two metal layers with a nanomaterial sensing layer) and an RFID chip with a self-tuning circuit to behave like a near 9-bit ADC. The sensing layer uses quantum tunneling holocarbon spheres in PDMS and a microtextured surface; a dual-resonant antenna preserves impedance match. Built hardware reads at meter-level RFID range (≈1 m) and reports median errors of about 0.5–0.97 mmHg, validated on pig eyes and varied biofluids.
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chapters (6)
- 0:00Glaucoma and IOP monitoring
- 2:42Cyclops battery-free contact lens
- 4:08Nanomaterial pressure sensor design
- 8:52Impedance matching for communication
- 11:40System evaluation and results
- 14:07Q&A
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