Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 803, Issue -, Pages 332-340Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.06.257
Keywords
Ag NW; Polyol method; Multi-parameter; Flexible sensor; Application
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Funding
- National Natural Science Foundation of China [51473122]
- Postdoctoral Science Foundation of China [2016M591390]
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The silver nanowires (Ag NWs) prepared by improved polyol method in 30min were applied to the stretchable strain sensors. Three factors affecting the morphology of Ag NWs were discussed, including reaction temperature, molecular weight of PVP, ratio of silver nitrate (AgNO3) and polyvinyl pyrrolidone (PVP). Experimental results showed that Ag NWs with diameter of 53 +/- 9 nm, length of 31 +/- 7 mu m and the aspect ratio is 584.9 were obtained under the optimum conditions. Thus, a new and convenient method was proposed to fabricate flexible stretchable sensors by embed Ag NWs into Poly-dimethylsiloxane (PDMS). The stability, hysteresis, and sensitivity of the Ag NWs@PDMS strain sensors were evaluated by cyclic stretch-release test. Our strain sensor with good stability, higher sensitivity (the gauge factor is 4.11) and good repeatability could be stretched 10% continuously for about 200 cycles. Ag NWs@PDMS flexible sensors can be used in wearable devices to monitor human movements. (C) 2019 Elsevier B.V. All rights reserved.
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