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Title: Controllable synthesis of nickel nanowires and its application in high sensitivity, stretchable strain sensor for body motion sensing
Authors: Wang, S
Chen, KF
Wang, M
Li, HS
Chen, GR
Liu, J
Xu, LH
Jian, Y
Meng, CD
Zheng, XY
Liu, SY
Yin, C
Wang, ZR
Du, PY
Qu, SX
Leung, CW 
Issue Date: 2018
Publisher: Royal Society of Chemistry
Source: Journal of materials chemistry C, 7 May 2018, v. 6, no. 17, p. 4737-4745 How to cite?
Journal: Journal of materials chemistry C 
Abstract: A facile, low-cost magnetic field-assisted chemical reduction method was proposed for synthesizing nickel nanowires (NiNWs) with both controllable diameter and high length to diameter (L/D) ratio at temperature as low as 60 degrees C. NiNWs with diameter as low as 180 +/- 21 nm and L/D ratio as high as 300 were achieved by controlling the reaction temperature, NiCl2 concentration and the quantity of reductant in a magnetic field of 170 mT. Based on the NiNWs, a high-sensitivity and stretchable strain sensor with sandwich structure consisting of NiNWs and Ecoflex elastomer was proposed. Gauge factor as high as 200 was demonstrated up to a strain of 100%. Applications of the sensor in detecting body motion including finger gestures, facial expressions and different phonations are presented. This study provides a promising solution for smart sensors for next generation robotics as well as for human-machine interfacing applications.
ISSN: 2050-7526
EISSN: 2050-7534
DOI: 10.1039/c7tc05970a
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