Stretchable, Skin-Mountable, and Wearable Strain Sensors and Their Potential Applications: A Review

Morteza Amjadi, Ki Uk Kyung, Inkyu Park, Metin Sitti

Research output: Contribution to journalReview article

1043 Citations (Scopus)

Abstract

There is a growing demand for flexible and soft electronic devices. In particular, stretchable, skin-mountable, and wearable strain sensors are needed for several potential applications including personalized health-monitoring, human motion detection, human-machine interfaces, soft robotics, and so forth. This Feature Article presents recent advancements in the development of flexible and stretchable strain sensors. The article shows that highly stretchable strain sensors are successfully being developed by new mechanisms such as disconnection between overlapped nanomaterials, crack propagation in thin films, and tunneling effect, different from traditional strain sensing mechanisms. Strain sensing performances of recently reported strain sensors are comprehensively studied and discussed, showing that appropriate choice of composite structures as well as suitable interaction between functional nanomaterials and polymers are essential for the high performance strain sensing. Next, simulation results of piezoresistivity of stretchable strain sensors by computational models are reported. Finally, potential applications of flexible strain sensors are described. This survey reveals that flexible, skin-mountable, and wearable strain sensors have potential in diverse applications while several grand challenges have to be still overcome. Stretchable and sensitive strain sensors can potentially function for biomedical applications, human-machine interfaces, and emerging soft robotics. Recent advancements in the development of stretchable, skin-mountable, and wearable strain sensors and their potential applications are reviewed. High performance sensors have been developed by composites of functional nanomaterials and flexible polymer supports.

Original languageEnglish
Pages (from-to)1678-1698
Number of pages21
JournalAdvanced Functional Materials
Volume26
Issue number11
DOIs
Publication statusPublished - 15 Mar 2016

Keywords

  • piezoresistivity
  • skin-mountable sensors
  • soft sensors
  • stretchable strain sensors
  • wearable sensors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Condensed Matter Physics
  • Electrochemistry

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