Highly Sensitive and Multimodal All‐Carbon Skin Sensors Capable of Simultaneously Detecting Tactile and Biological Stimuli
Abstract
A highly sensitive, wearable, and multimodal skin sensor that uses hierarchically engineered elastic carbon nanotube microyarns is described. Piezocapacitive all-carbon skin sensors simultaneously detect heterogeneous external subtle stimuli, including mechanical deformation, touch, temperature or humidity gradients, and even biological variables with different dipole moments, which enables in situ human monitoring as well as recognition of robot-human-environmental interface.
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Touch sensing can be achieved using the capacitive mechanism in a capacitor configuration; unlike strain and pressure sensors that rely on geometrical effect, a decrease in capacitance is seen for touch sensing, arising from the disturbed fringing field by the conducting object.
“Touch sensing can be achieved using the capacitive mechanism in a capacitor configuration.[41,43,54,165,166] Different from strain and pressure sensors that rely on geometrical effect, a decrease in capacitance is seen for touch sensing, arising from the disturbed fringing field by the conducting object (Figure 4d).”
From Nanomaterial-Enabled Wearable Sensors for Healthcare (2018) · cites this paper as [54]
In a CNT based capacitive sensor, the presence of water vapors or other chemical solvents can enhance the fringing field of the sensor owing to the arrangement of dipoles from the water vapor or other solvents.
“In a CNT based capacitive sensors, the presence of water vapors or other chemical solvents can enhance the fringing field of the sensor owing to the arrangement of dipoles from the water vapor or other solvents.[54]”
From Nanomaterial-Enabled Wearable Sensors for Healthcare (2018) · cites this paper as [54]
CNT microyarns were aligned with Ecoflex as the dielectric to form a grid of stretchable capacitive sensors.
“CNT microyarns were aligned with Ecoflex as the dielectric to form a grid of stretchable capacitive sensors (Figure 7b).[54]”
From Nanomaterial-Enabled Wearable Sensors for Healthcare (2018) · cites this paper as [54]
In addition to capacitive sensing of pressure and finger approaching, temperature variations can be detected due to thermoresistive response of the CNT yarns, while humidity and other chemical solvents can be detected from the capacitance change.
“In addition to the capacitive sensing of pressure and finger approaching, the temperature variations can be detected due to thermoresistive response of the CNT yarns, while the humidity and other chemical solvents can be detected from the capacitance change.”
From Nanomaterial-Enabled Wearable Sensors for Healthcare (2018) · cites this paper as [54]
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Self-citation
- Authors
- Kim, S. Y., Park, S., Park, H. W., Park, D. H., Jeong, Y., & Kim, D. H.
- Affiliations
- Soongsil University (KR)
- Corresponding author
- Jeong, Youngjin
- Kim, Do Hwan
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2015-06-11
- Volume
- 27
- Issue
- 28
- Pages
- 4178-4185
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W1649951100
- Cited by
- 416
- References
- 44
- Citations by year
- 2026: 6 · 2025: 15 · 2024: 26 · 2023: 42 · 2022: 43 · 2021: 47 · 2020: 57 · 2019: 53 · 2018: 47 · 2017: 49 · 2016: 30 · 2015: 1
- FWCI
- 21.03
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Advanced Materials (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
- Physical Sciences › Materials Science › Materials Chemistry › Carbon Nanotubes in Composites
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Nanomaterials and Printing Technologies
- Keywords
- wearable sensors, tactile sensing, temperature sensing, humidity sensing, biological signal detection, human monitoring, hierarchical carbon structure
- MeSH terms
- Artificial Organs, Humans, Humidity, Pressure, Temperature, Electric Capacitance, Nanotubes, Carbon
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