| 초록 |
We introduce multifunctional and flexible physical sensors based on piezoresistive, ferroelectric, and triboelectric sensing principles. We show that piezoresistive and ferroelectric skins with fingerprint-like patterns and interlocked microstructures can detect and discriminate multiple spatio-temporal tactile stimuli including static and dynamic pressure, vibration, and temperature with high sensitivities. We also fabricate hierarchical nanoporous and interlocked microridge-structured polymers for the spacer-free, ultrathin, and flexible triboelectric sensors. When attached on the human skin, our electronic skins can be used as wearable healthcare monitoring devices, which are able to distinguish various mechanical stimuli applied in different directions, detect human vital signs and voice, and precisely discriminate various surface textures. |
