Magnetized Micropillar-Enabled Wearable Sensors for Touchless and Intelligent Information Communication

Highlights A wearable capacitive sensor, which can recognize both the magnitude and orientation of magnetic field with non-overlapping capacitance signals, was proposed as touchless and intelligent communication channel. The integrated sensor exhibited the high sensitivity of over 1.3 T -1 and detection limit down to 1 mT with excellent durability (over 10,000 cycles). The sensor revealed as an efficient and ternary interface with high-capacity for information interaction, e.g., Morse code, Braille communication, and multi-control instruction.