Cited by 160Advanced Sensor and Energy Harvesting MaterialsCellular and Composite StructuresNanomaterials and Printing Technologies

Poisson Ratio and Piezoresistive Sensing: A New Route to High‐Performance 3D Flexible and Stretchable Sensors of Multimodal Sensing Capability

Li, Yan, Luo, Sida, Yang, Ming‐Chia, Liang, Richard, Zeng, Changchun·2016·Advanced Functional Materials

Abstract

The performance of flexible and stretchable sensors relies on the optimization of both the flexible substrate and the sensing element, and their synergistic interactions. Herein, a novel strategy is reported for cost‐effective and scalable manufacturing of a new class of porous materials as 3D flexible and stretchable piezoresistive sensors, by assembling carbon nanotubes onto porous substrates of tunable Poisson ratios. It is shown that the piezoresistive sensitivity of the sensors increases as the substrate's Poisson's ratio decreases. Substrates with negative Poisson ratios (auxetic foams) exhibit significantly higher piezoresistive sensitivity, resulting from the coherent mode of deformation of the auxetic foam and enhanced changes of tunneling resistance of the carbon nanotube networks. Compared with conventional foam sensors, the auxetic foam sensor (AFS) with a Poisson's ratio of –0.5 demonstrates a 300% improvement in piezoresistive sensitivity and the gauge factor increases as much as 500%. The AFS has high sensing capability, is extremely robust, and capable of multimodal sensing, such as large deformation sensing, pressure sensing, shear/torsion sensing, and underwater sensing. AFS shows great potential for a broad range of wearable and portable devices applications, which are described by reporting on a series of demonstrations.

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Crossref · 10.1002/adfm.201505070

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  • A resistive sensor based on CNT coated foams with negative Poisson's ratio (auxetic foams) was used for detection of pressure, stretching, torsion and ultrasound acoustic wave.

    “Figure 7a highlights a resistive sensor based on CNT coated foams with negative Poisson's ratio (auxetic foams) for the detection of pressure, stretching, torsion and ultrasound acoustic wave.[48]”

    From Nanomaterial-Enabled Wearable Sensors for Healthcare (2018) · cites this paper as [48]

  • The auxetic foams were able to shrink/stretch concurrently in three dimensions, and therefore enhanced the pressure sensitivity by 300% and tensile strain sensitivity by 500%.

    “The auxetic foams were able to shrink/stretch concurrently in three dimensions, and therefore enhanced the pressure sensitivity by 300% and tensile strain sensitivity by 500%.”

    From Nanomaterial-Enabled Wearable Sensors for Healthcare (2018) · cites this paper as [48]

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Authors
Li, Y., Luo, S., Yang, M., Liang, R., & Zeng, C.
Affiliations
Florida State University (US)
Corresponding author
  • Liang, Richard
  • Zeng, Changchun
Venue
Advanced Functional Materials
Publisher
Wiley
Published
2016-02-19
Volume
26
Issue
17
Pages
2900-2908
ISSN
  • 1616-301X (ISSN-L)
  • 1616-3028
OpenAlex
W2278718511
Cited by
160
References
47
Citations by year
2026: 4 · 2025: 16 · 2024: 16 · 2023: 24 · 2022: 18 · 2021: 26 · 2020: 12 · 2019: 19 · 2018: 10 · 2017: 11 · 2016: 4
FWCI
7.04
Type
journal article
Language
en
Open access
closed
Locations
Advanced Functional Materials (publishedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
  • Physical Sciences › Engineering › Mechanical Engineering › Cellular and Composite Structures
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Nanomaterials and Printing Technologies
Keywords
Poisson's ratio, piezoresistive sensors, auxetic foams, negative Poisson's ratio, carbon nanotube networks, porous substrates, stretchable sensors, multimodal sensing, pressure sensing, underwater sensing, gauge factor, tunneling resistance, wearable devices

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