Journal
ACS NANO
Volume 12, Issue 5, Pages 4259-4268Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.7b07795
Keywords
fiber strain sensors; stretchable electronics; strain sensors; wearable electronics; biomedical engineering
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Funding
- Priority Research Centers Program through the National Research Foundation (NRF) of Korea - Ministry of Education, Science and Technology (MEST) [2009-0093823]
- Midcareer Researcher Program through an NRF - MEST [2014R1A2A2A09053061]
- R&D program of MOTIE/KEIT [10064081]
- National Research Foundation of Korea (NRF) - Korea government (MEST) [2014R1A2A1A11053839]
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2017R1A2B4011455]
- KIST project [2E27930]
- National Research Foundation of Korea [2017R1A2B4011455] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Highly stretchable fiber strain sensors are one of the most important components for various applications in wearable electronics, electronic textiles, and biomedical electronics. Herein, we present a facile approach for fabricating highly stretchable and sensitive fiber strain sensors by embedding Ag nanoparticles into a stretchable fiber with a multifilament structure. The multifilament structure and Ag-rich shells of the fiber strain sensor enable the sensor to simultaneously achieve both a high sensitivity and largely wide sensing range despite its simple fabrication process and components. The fiber strain sensor simultaneously exhibits ultrahigh gauge factors (similar to 9.3 x 10(5) and similar to 659 in the first stretching and subsequent stretching, respectively), a very broad strain-sensing range (450 and 200% for the first and subsequent stretching, respectively), and high durability for more than 10 000 stretching cycles. The fiber strain sensors can also be readily integrated into a glove to control a hand robot and effectively applied to monitor the large volume expansion of a balloon and a pig bladder for an artificial bladder system, thereby demonstrating the potential of the fiber strain sensors as candidates for electronic textiles, wearable electronics, and biomedical engineering.
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