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Ultra-stretchable and skin-mountable strain sensors using carbon nanotubes–Ecoflex nanocomposites
Abstract
Super-stretchable, skin-mountable, and ultra-soft strain sensors are presented by using carbon nanotube percolation network-silicone rubber nanocomposite thin films. The applicability of the strain sensors as epidermal electronic systems, in which mechanical compliance like human skin and high stretchability (ϵ > 100%) are required, has been explored. The sensitivity of the strain sensors can be tuned by the number density of the carbon nanotube percolation network. The strain sensors show excellent hysteresis performance at different strain levels and rates with high linearity and small drift. We found that the carbon nanotube-silicone rubber based strain sensors possess super-stretchability and high reliability for strains as large as 500%. The nanocomposite thin films exhibit high robustness and excellent resistance-strain dependency for over ~1380% mechanical strain. Finally, we performed skin motion detection by mounting the strain sensors on different parts of the body. The maximum induced strain by the bending of the finger, wrist, and elbow was measured to be ~ 42%, 45% and 63%, respectively.
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“To measure multiaxial strain, techniques such as arranging multiple sensors with rosette configuration, [135,136] anisotropic electrical impedance tomography, [137] and stacking strain sensors with low cross-sensitivity along different directions were adopted.”
From Nanomaterial-Enabled Wearable Sensors for Healthcare (2018) · cites this paper as [136]
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“Similar rosette arrangements were also used for CNT-Ecoflex nanocomposite enabled strain sensors.[136]”
From Nanomaterial-Enabled Wearable Sensors for Healthcare (2018) · cites this paper as [136]
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Metadata
- Authors
- Amjadi, M., Yoon, Y. J., & Park, I.
- Affiliations
- Korea Advanced Institute of Science and Technology (KR)
- Nanyang Technological University (SG)
- Corresponding author
- Park, Inkyu
- Venue
- Nanotechnology
- Publisher
- IOP Publishing
- Published
- 2015-08-25
- Volume
- 26
- Issue
- 37
- Pages
- 375501
- ISSN
- 0957-4484 (ISSN-L)
- 1361-6528
- OpenAlex
- W1843167350
- Cited by
- 817
- References
- 66
- Citations by year
- 2026: 34 · 2025: 59 · 2024: 67 · 2023: 83 · 2022: 92 · 2021: 91 · 2020: 100 · 2019: 124 · 2018: 79 · 2017: 58 · 2016: 28 · 2015: 2
- FWCI
- 27.66
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Nanotechnology (publishedVersion)
- PubMed (publishedVersion)
- ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
- Funders
- Industrial Strategic Technology Development Program (10041618)
- Fundamental R&D Program for Core Technology of Materials (N02120149)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Nanomaterials and Printing Technologies
- Physical Sciences › Materials Science › Materials Chemistry › Carbon Nanotubes in Composites
- Keywords
- stretchable strain sensors, carbon nanotubes, nanocomposite films, percolation network, epidermal electronics, hysteresis
- MeSH terms
- Clothing, Equipment Design, Humans, Monitoring, Physiologic, Polyesters, Skin Physiological Phenomena, Nanotechnology, Nanotubes, Carbon, Nanocomposites
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