Melamine sponge skeleton loaded organic conductors for mechanical sensors with high sensitivity and high resolution

Abstract

In recent years, due to the development of exible electronics, exible sensors have been widely concerned and applied in intelligent robots, brain-computer interfaces and wearable electronic devices. We propose a low-cost and high-e ciency sensor component preparation method. The sensor Tetrathiafulvalene-Tetracyanoquinodimethane/ melamine sponge (TTMS) takes a melamine sponge as a exible substrate and metallizes the sponge with the organic conducting molecule Tetrathiafulvalene-Tetracyanoquinodimethane (TTF-TCNQ) to construct a conductive pathway with chemical stability. We use a physical load approach to ensure the advantages of low cost and e cient manufacturing. TTMS has good mechanical stability and can withstand 8000 compressions. 1000 cycles of cyclic voltammetry scanning proved that it also had good electrical stability. TTMS can distinguish pressure changes of 100 Pa and respond quickly to pressure application and release. These TTMS can be assembled to form an array of sensors that can distinguish the position and intensity of pressure. Therefore, the excellent performance of the sensor is expected to promote the commercial application of the piezoresistive sensor.

Continuous Wet-Spinning of TPU Composite Fibers for Wearable Knitted Sensors

“…In recent years, fiber-based sensors have gained extensive attention owing to their various applications in wearable motion monitors, wearable sensors, − soft robots, human machine interface, and other smart sensors. − Additionally, many various conductive fiber sensors based on conductive materials , have been reported. Especially, graphene-based fibers (GBFs) with excellent specific surface area and superb electrical performances are impressive for next-generation flexible sensors.…”

“…In recent years, fiber-based sensors have gained extensive attention owing to their various applications in wearable motion monitors, 1 wearable sensors, 2−5 soft robots, 6 human machine interface, 7 and other smart sensors. 8−11 Additionally, many various conductive fiber sensors based on conductive materials 12,13 have been reported.…”

Microporous MXene/Polyurethane Gels Derived from Iron Foam Templates for Ultra-High Stable Pressure Sensors and Triboelectric Nanogenerators

“…Pressure sensors can be categorized into five types based on different working mechanisms: transistor sensing, piezoresistive sensing, , capacitive sensing, piezoelectric sensing, and friction electric sensing . Piezoresistive pressure sensors have garnered significant attention due to their straightforward back-end reading system, low cost, easy assembly process, and excellent sensing performance. − However, achieving high sensitivity, large linear operating ranges, and outstanding cycling stability for conventional piezoresistive sensors is challenging, limiting their applications in various settings.…”

“…8 The increasing interest in flexible pressure sensors stems from their capability to nondestructively, comfortably sense and analyze external pressure signals, converting them into easily accessible and analyzable electrical signals. 9 Pressure sensors can be categorized into five types based on different working mechanisms: transistor sensing, 10 piezoresistive sensing, 11,12 capacitive sensing, 13 piezoelectric sensing, 14 and friction electric sensing. 15 Piezoresistive pressure sensors have garnered significant attention due to their straightforward back-end reading system, low cost, easy assembly process, and excellent sensing performance.…”

Cicada-Wing-Inspired Highly Sensitive Tactile Sensors Based on Elastic Carbon Foam with Nanotextured Surfaces

“…Compressible and wearable pressure sensory devices have witnessed significant advances over the past 10 years owing to their numerous applications including human motion tracking, personal healthcare monitoring, soft robotics, artificial intelligence, and so forth. − Piezoresistive sensors are regarded as promising candidates for wearable pressure-sensing electronics due to their straightforward design, cost-effectiveness, simplicity of operation, and high compression and deformation sensitivity. − Pressure-sensing devices can convert pressure into variation in resistance, thus realizing the real-time detection of various motions and deformations via the change in current. Recently, flexible polymer and elastomeric films loaded with conducting particles including graphene, , graphite particles, carbon nanotubes (CNTs), − and conducting polymers (such as PEDOT:PSS, polyaniline, and so forth) − have been used as a sensing platform for flexible piezoresistive sensors. − For example, Liu and co-workers fabricated bacteria cellulose (BC) intercalated MXene films using plain paper as a flexible substrate by vacuum filtration. The assembled MXene/BC pressure sensor showed excellent sensing performance including high sensitivity in the low-pressure range, wide linear range, short response/recovery times (99/93 ms), and high stability of 5000 cycles .…”