Cited by 1,695Advanced Sensor and Energy Harvesting MaterialsNanomaterials and Printing TechnologiesAdvanced Materials and Mechanics

A flexible and highly sensitive strain-gauge sensor using reversible interlocking of nanofibres

Pang, Changhyun, Lee, Gil-Yong, Kim, Tae-il, Kim, Sang Moon, Kim, Hong Nam, Ahn, Sung-Hoon, Suh, Kahp-Yang·2012·Nature Materials

Abstract

Flexible skin-attachable strain-gauge sensors are an essential component in the development of artificial systems that can mimic the complex characteristics of the human skin. In general, such sensors contain a number of circuits or complex layered matrix arrays. Here, we present a simple architecture for a flexible and highly sensitive strain sensor that enables the detection of pressure, shear and torsion. The device is based on two interlocked arrays of high-aspect-ratio Pt-coated polymeric nanofibres that are supported on thin polydimethylsiloxane layers. When different sensing stimuli are applied, the degree of interconnection and the electrical resistance of the sensor changes in a reversible, directional manner with specific, discernible strain-gauge factors. The sensor response is highly repeatable and reproducible up to 10,000 cycles with excellent on/off switching behaviour. We show that the sensor can be used to monitor signals ranging from human heartbeats to the impact of a bouncing water droplet on a superhydrophobic surface.

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Crossref · 10.1038/nmat3380

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38 of 38 references verified0 citation errors · 0 not checkable

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  • A randomized trial of self-tracking of blood glucose concentration in noninsulin-treated type-2 diabetics showed no convincing improvement.

    “A randomized trial of self‐tracking of blood glucose concentration in noninsulin treated type‐2 diabetics showed no convincing improvement.252”

    From Wearables in Medicine (2018) · cites this paper as [252]

  • A multitude of pressure sensing arrays have been demonstrated to capture the spatial pressure distributions induced by different sources, such as a static object placed onto the sensing array, gas flow, bouncing of a water droplet, finger touch, and acoustic vibration.

    “A multitude of pressure sensing arrays have been demonstrated to capture the spatial pressure distributions induced by different sources, such as a static object placed onto the sensing array, [57,139,141,158,203] gas flow, [141,144,153] bouncing of a water droplet (Figure 11a), [139] finger touch, [144,161] and acoustic vibration.[144,203]”

    From Nanomaterial-Enabled Wearable Sensors for Healthcare (2018) · cites this paper as [139]

  • Modeling yielded predictions for percentage changes in the volume of the serpentine channel associated with externally applied pressures between 100 and 400 Pa comparable to those that might be associated with a gentle touch by a fingertip.

    “Modeling yielded predictions for percentage changes in the volume of the serpentine channel associated with externally applied pressures between 100 and 400 Pa (Fig. 2C) comparable to those that might be associated with a gentle touch by a fingertip (41).”

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Authors
Pang, C., Lee, G.-Y., Kim, T.-I., Kim, S. M., Kim, H. N., Ahn, S.-H., & Suh, K.-Y.
Affiliations
  • Seoul National University (KR)
  • University of Illinois Urbana-Champaign (US)
Corresponding author
Suh, Kahp-Yang
Venue
Nature Materials
Published
2012-07-29
Volume
11
Issue
9
Pages
795-801
ISSN
  • 1476-1122 (ISSN-L)
  • 1476-4660
OpenAlex
W2078835847
Cited by
1,695
References
38
Citations by year
2026: 53 · 2025: 83 · 2024: 118 · 2023: 87 · 2022: 151 · 2021: 149 · 2020: 157 · 2019: 189 · 2018: 186 · 2017: 155 · 2016: 133 · 2015: 102 · 2014: 77 · 2013: 43 · 2012: 10
FWCI
42.31
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Research Foundation of Korea
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 › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
Keywords
flexible strain sensors, electronic skin, resistive sensors, pressure sensing, shear sensing, torsion sensing, polydimethylsiloxane, strain gauge factor, wearable sensors, superhydrophobic surfaces

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