Computational analysis of metallic nanowire-elastomer nanocomposite based strain sensors
Open accessAbstract
Possessing a strong piezoresistivity, nanocomposites of metal nanowires and elastomer have been studied extensively for its use in highly flexible, stretchable, and sensitive sensors. In this work, we analyze the working mechanism and performance of a nanocomposite based stretchable strain sensor by calculating the conductivity of the nanowire percolation network as a function of strain. We reveal that the nonlinear piezoresistivity is attributed to the topological change of percolation network, which leads to a bottleneck in the electric path. We find that, due to enhanced percolation, the linearity of the sensor improves with increasing aspect ratio or volume fraction of the nanowires at the expense of decreasing gauge factor. In addition, we show that a wide range of gauge factors (from negative to positive) can be obtained by changing the orientation distribution of nanowires. Our study suggests a way to intelligently design nanocomposite-based piezoresistive sensors for flexible and wearable devices.
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Higher density AgNW networks and higher aspect ratio resulted in better linearity but lower sensitivity.
“Higher density AgNW networks and higher aspect ratio resulted in better linearity but lower sensitivity.”
From Nanomaterial-Enabled Wearable Sensors for Healthcare (2018) · cites this paper as [114]
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Self-citation
- Authors
- Lee, S., Amjadi, M., Pugno, N., Park, I., & Ryu, S.
- Affiliations
- Korea Advanced Institute of Science and Technology (KR)
- Queen Mary University of London (GB)
- Venue
- AIP Advances
- Publisher
- AIP Publishing
- Published
- 2015-11-01
- Volume
- 5
- Issue
- 11
- ISSN
- 2158-3226 (ISSN-L)
- OpenAlex
- W2179402625
- Cited by
- 22
- References
- 44
- Citations by year
- 2026: 1 · 2024: 4 · 2023: 1 · 2022: 2 · 2021: 1 · 2020: 4 · 2019: 4 · 2018: 1 · 2017: 2 · 2016: 2
- FWCI
- 0.83
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- AIP Advances (publishedVersion, cc-by)
- ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (acceptedVersion)
- Iris (University of Trento) (submittedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Research Foundation of Korea (2013R1A1A010091, NRF-2008-2002807)
- 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, piezoresistivity, percolation network, electrical conductivity, gauge factor, nanowire aspect ratio, nanowire orientation, wearable electronics, flexible electronics
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