An eco-friendly and highly sensitive loofah@CF/CNT 3D piezoresistive sensor for human activity monitoring and mechanical cotrol

Zhu, Jie; Song, Yongtao; Xue, Xiaofei; Liu, Zhilong; Mao, Qingyuan; Jia, Zhenhua

doi:10.1007/s11431-022-2204-2

Cited by 6 publications

(1 citation statement)

References 38 publications

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“…and hydrogels [ 29 , 30 , 31 , 32 ]. Examined fillers include 0-dimensional “spheres” (carbon black [ 33 , 34 , 35 ], metal-oxide nanoparticles [ 36 , 37 , 38 , 39 , 40 , 41 ], quantum dots [ 42 , 43 , 44 , 45 ] et cetera), 1-dimensional “fibers” (carbon nanotubes [ 46 , 47 , 48 , 49 , 50 ], carbon nanofibers [ 51 , 52 , 53 , 54 ], carbon fibers [ 55 , 56 , 57 ]) and 2-dimensional “flakes” (graphene [ 58 , 59 , 60 , 61 ], graphene oxide [ 62 , 63 , 64 , 65 ], graphite nanoflakes etc.).…”

Section: Introductionmentioning

confidence: 99%

Electric Resistance of Elastic Strain Sensors—Fundamental Mechanisms and Experimental Validation

Xie

Liu³

et al. 2023

Nanomaterials

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Elastic strain sensor nanocomposites are emerging materials of high scientific and commercial interest. This study analyzes the major factors influencing the electrical behavior of elastic strain sensor nanocomposites. The sensor mechanisms were described for nanocomposites with conductive nanofillers, either dispersed inside the polymer matrix or coated onto the polymer surface. The purely geometrical contributions to the change in resistance were also assessed. The theoretical predictions indicated that maximum Gauge values are achieved for mixture composites with filler fractions slightly above the electrical percolation threshold, especially for nanocomposites with a very rapid conductivity increase around the threshold. PDMS/CB and PDMS/CNT mixture nanocomposites with 0–5.5 vol.% fillers were therefore manufactured and analyzed with resistivity measurements. In agreement with the predictions, the PDMS/CB with 2.0 vol.% CB gave very high Gauge values of around 20,000. The findings in this study will thus facilitate the development of highly optimized conductive polymer composites for strain sensor applications.

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