Flexible temperature sensor based on RGO/CNTs@PBT melting blown nonwoven fabric

Self-Assembled and Multilayer-Overlapped ESM-PDA@rGO Nanofilm-Based Flexible Wearable Sensor for Real-Time Body Temperature Monitoring

“…The peak at 1128 cm –1 represents the amine C–N band, that at 1485 cm –1 represents the CH 2 band, and that at 1709 cm –1 represents the amide CO band. The C–S peak can be identified at around 580 cm –1 . , Compared with ESM, the peak of the CO bond at 1709 cm –1 is strengthened in the ESM-PDA@rGO film, which indicates that rGO is successfully combined with the ESM . The PDA macromolecular chains contain benzene rings, phenolic hydroxyl groups, and amido groups.…”

“…The temperature coefficient of resistance (TCR) was used to evaluate the sensitivity of the ESM-PDA@rGO temperature sensor. TCR is defined as the corresponding change in resistance over the temperature changes by 1 °C, and it can be calculated by the following (eq ): TCR = normalΔ R R 0 × 1 normalΔ T × 100 % where Δ R = R – R 0 . R and R 0 are the resistances at real-time measured temperature and 25 °C of the temperature sensor, respectively.…”

“…28,19 Compared with ESM, the peak of the C� O bond at 1709 cm −1 is strengthened in the ESM-PDA@rGO film, which indicates that rGO is successfully combined with the ESM. 12 The PDA macromolecular chains contain benzene rings, phenolic hydroxyl groups, and amido groups. The peaks at 1200 and 1485 cm −1 are attributed to the N−H shearing vibration of the amide group and the C−O vibration.…”

“…Temperature sensing materials have been widely explored, including metal nanoparticles/nanowires, , graphene, , carbon nanotubes, polymers, and others. Notably, owing to the outstanding electrical and thermal properties, graphene and its derivatives are wildly employed, for example, the rGO/CNT temperature sensor and PEI/rGO temperature sensor . Despite favorable signals, critical issues regarding wearable comfort, skin-like mechanical properties, and rapid and accurate temperature responses remain challenges for wearable temperature sensors.…”

Reliable and Scalable Piezoresistive Sensors with an MXene/MoS2 Hierarchical Nanostructure for Health Signals Monitoring

“…The active materials of a piezoresistive sensor often use conductive nanostructures, such as carbon-based nanomaterials (e.g., carbon nanotubes and graphene), − metal nanostructures (e.g., nanowires and nanoparticles), , conductive organic polymers, , or a combination of these. , These conductive nanostructures are combined with a flexible substrate to create a piezoresistive sensor, allowing the resistance to change in response to external pressures. As a novel two-dimensional material, titanium carbide (Ti 3 C 2 T x ) MXene nanosheets have been proposed for use as active materials in pressure sensors due to their advantageous properties such as high electrical conductivity, large specific surface area, good hydrophilicity, and abundant surface groups. − Nevertheless, the interlamellar self-stacking of MXene nanosheets may impede the sensitivity of the sensor, as the pressure-induced changes to the conductive channel are reduced.…”