Electrically conductive NBR/CB flexible composite film for ultrastretchable strain sensors: fabrication and modeling

Carbon Black Nanoparticle/Polydopamine-Coated Core-Spun Yarns for Flexible Strain Sensors

“…On the basis of experience from our previous studies, the RCR value of CSY/30CB (Figure , orange points) was correctly expected to be accurately fitted using eq , (Figure , blue line). where A is the initial amplitude (the maximum RCR value in the first cycle) and P is the time of the two cycles. The variables ω and C are local parameters, depending on the fundamental physical properties of the material.…”

“…On the basis of experience from our previous studies, the RCR value of CSY/30CB (Figure , orange points) was correctly expected to be accurately fitted using eq , (Figure , blue line). RCR = 2 A π true( true| arcsin ( sin ⁡ 2 π t p ) true| n + ω t c true) where A is the initial amplitude (the maximum RCR value in the first cycle) and P is the time of the two cycles. The variables ω and C are local parameters, depending on the fundamental physical properties of the material.…”

“…However, the elongation at break is slightly lower for the CSY/CB and CSY/CB/PDA textile than for the pure CSY (Figure b). This is mainly attributed to a weakening effect of the chemical solvents on the CSY matrix. , Similarly, the tensile strength of the CSY also decreases after chemical solvent processing (Figure b). Although PDA provides adhesion between the fibers in the matrix, it does not significantly affect the mechanical properties of the specimen (Figure b).…”

“…Similar coating effects have been observed for nitrile rubberbased strain sensors. 46,47 Equation 9 was therefore unable to establish an accurate relationship between RCR and time during cycle measurement. A novel equation based on eq 9 and a theoretical equation for tunneling (eq 5) was proposed to describe the properties of strain sensors with protective coatings like e.g.…”

An ultra-wide sensing range film strain sensor based on a branch-shaped PAN-based carbon nanofiber and carbon black synergistic conductive network for human motion detection and human–machine interfaces

“…[9][10][11] A large sensing range and low detection limit are two pivotal parameters for human health monitoring, and both are required because small strain, such as surface muscles and phonation, and large strain, such as joint movement, occur simultaneously in the human body. Therefore in order to enhance the stretchability and improve the sensing range, various materials based on carbon and other types of conductive fillers, such as carbon black (CB), [12][13][14][15][16] carbon nanotubes (CNTs), 2,4,[17][18][19][20] carbon nanofibers (CNFs), 21,22 graphene (and its derivatives), 17,22,23 1D Ag NWs, 24 and newly developed 2D MXenes, [25][26][27][28] have been hybridized with flexible polymer substrates, such as polydimethylsiloxane (PDMS), 13,17,18,21 thermoplastic polyurethane (TPU), 2,4,12,19,20 and silicon-based rubber (NBR), 14,15 to form conductive flexible composites (CFCs).…”