Super-stretchable, Transparent Carbon Nanotube-Based Capacitive Strain Sensors for Human Motion Detection
By Le Cai, L. Song, P. Luan, Qiang Zhang, N. Zhang, Qingqing Gao, Duan Zhao, Xiao Zhang, M. Tu, Feng Yang and 6 more. Scientific Reports, 2013
614 citations recorded by the source corpus.
Realization of advanced bio-interactive electronic devices requires mechanically compliant sensors with the ability to detect extremely large strain. Here, we design a new multifunctional carbon nanotube (CNT) based capacitive strain sensors which can detect strains up to 300% with excellent durability even after thousands of cycles. The CNT-based strain gauge devices exhibit deterministic and linear capacitive response throughout the whole strain range with a gauge factor very close to the predicted value (strictly 1), representing the highest sensitivity value. The strain tests reveal the presented strain gauge with excellent dynamic sensing ability without overshoot or relaxation, and ultrafast response at sub-second scale. Coupling these superior sensing capabilities to the high transparency, physical robustness and flexibility, we believe the designed stretchable multifunctional CNT-based strain gauge may have various potential applications in human friendly and wearable smart electronics, subsequently demonstrated by our prototypical data glove and respiration monitor.
Subfields: Biomedical Engineering, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/be3042cfa42d922e77d309e51777e4f15195fc2d
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In Biomedical Engineering
In Polymers and Plastics
Citations in the corpus
- The Emergence of AI-Based Wearable Sensors for Digital Health Technology: A Review (2023, background): “…mechanisms are piezoresistive [73,79], piezo capacitive The strain/pressure sensing mechanisms are piezoresistive [73,79], piezo capacitive [80,81], piezoelectric [82,83], triboelectric [84,85], and fiber Bragg grating sensors [86,87]. capacitive [80,81], piezoelectric [82,83], triboelectric…”
- Flexible Sensors—From Materials to Applications (2019, methodology): “CNTs were used to construct a durable (10,000 cycles at 100% strain) capacitive strain sensor with a response time of <100 ms and a maximum strain of 300% [322].”
- Ultra-stretchable and skin-mountable strain sensors using carbon nanotubes–Ecoflex nanocomposites (2015, methodology): “linearity, hysteresis, and creep performance were reported using Dragon Skin as a dielectric layer and CNT thin films as stretchable electrodes [18].”