Carbonized sunflower core based strain sensor for monitoring human motion

Abstract

Strain sensors with high flexibility and sensitivity have gained significant research attention for wide applications in real‐time monitoring, human‐machine interactions and robot arms. Herein, the carbonized natural sunflower core (SFC) was encapsulated by polydimethylsiloxane (PDMS) to fabricate a highly flexible strain sensor. In addition to the low‐cost and facile synthesis, the as‐prepared strain sensor demonstrated large sensitivity (maximum GF value of 48.1 at 40%–50% strain), excellent response range (0.5%–100%), and high stability and durability (more than 1000 cycles under repeated loading/releasing of 0.1% tensile strain). The excellent sensing performance could be realized under both compression and stress/strain format. Moreover, the as‐prepared flexible strain sensor could measure human movements, including tiny expression and vigorous joint motions, displaying great potential and promising applications in wearable devices.

High strength, anti‐freezing, and conductive poly(vinyl alcohol)/urea ionic hydrogels as soft sensor

“…[6] Therefore, they have broad application prospects in drug delivery, [7][8][9] artificial muscles, [10,11] wearable devices, [12][13][14] and soft robots. [15,16] In recent years, wearable sensors [17,18] based on conductive hydrogels have tremendous application in various industries, including bionic skin, [19,20] human motion detection, [21][22][23][24] medical detection, [25] and intelligent devices. [26,27] As strain sensors, their essential feature is their ability to distinguish the changes of electrical signals in various ranges.…”

Highly sensitive flexible strain sensor based on carbon nanotube/styrene butadiene styrene@ thermoplastic polyurethane fiber with a double percolated structure

“…[1][2][3][4][5] Through integrating CPCs within electronic devices, a variety of physical changes in the internal/external environment can be detected such as pressure, strain, humidity, and temperature. [6][7][8][9][10][11] Many reports exist in the literature on the design of flexible strain sensors. For example, conductive nanofillers have been introduced or embedded within soft elastic matrix materials, [12][13][14] or have been dispersed on the surface of elastic matrix materials, [15] or are distributed in layers with elastic matrix materials.…”