Superhydrophobic and high-performance wood-based piezoresistive pressure sensors for detecting human motions

Integrated temperature and pressure dual-mode sensors based on elastic PDMS foams decorated with thermoelectric PEDOT:PSS and carbon nanotubes for human energy harvesting and electronic-skin

“…8,12 The core strategy of decoupling electrical signals for different stimuli is to convert individual stimuli to independent electrical signals by adopting different sensing mechanisms. 13 Generally, pressure sensors are based on piezoresistive, 9,14 piezo-capacitive 15,16 and piezoelectric/triboelectric effects, [17][18][19] and enable the conversion of pressure to resistance/current, capacitance, and voltage, respectively, whereas temperature sensors are based on thermoresistive and thermoelectric effects 9,10 and can transduce temperature to resistance/current and voltage, respectively. Hence, by proper combination of different sensing mechanisms, dual-function sensors can be realized.…”

Wearable RGO/MXene Piezoresistive Pressure Sensors with Hierarchical Microspines for Detecting Human Motion

“…13,14 Generally, FPPS is composed of flexible substrate [polydimethylsiloxane (PDMS), polyvinyl alcohol, thermoplastic polyurethane (PU), etc.] 15−18 and active materials (graphene, 19−21 carbon nanotube, 22,23 metal nanoparticles, 24,25 and MXene, 26−30 etc. ), which are crucial for the achievement of sensing performances.…”

“…Owing to the characteristics of high sensitivity, flexibility, fast response, and simple signal collection, , flexible piezoresistive pressure sensor (FPPS) has attracted considerable attention and shown great application prospects in the fields of artificial intelligence, − human–computer interaction, − environmental monitoring, , and medical diagnosis. , Generally, FPPS is composed of flexible substrate [polydimethylsiloxane (PDMS), polyvinyl alcohol, thermoplastic polyurethane (PU), etc. ] − and active materials (graphene, − carbon nanotube, , metal nanoparticles, , and MXene, − etc. ), which are crucial for the achievement of sensing performances.…”

Drug-Loaded and Anisotropic Wood-Derived Hydrogel Periosteum with Super Antibacterial, Anti-Inflammatory, and Osteogenic Activities

“…As a renewable resource, natural wood not only has the advantages of extensive source and low cost but also has a highly ordered hierarchical structure, good mechanical properties, and biocompatibility. , Wood is composed of oriented cellulose nanofibers with unique mechanical anisotropy, which is similar to that of axially arranged collagen fibers in the periosteum . Moreover, after delignification treatment, the porous structure and oriented cellulose fiber skeleton of wood can be well maintained, which is expected to be used as an ideal and anisotropic high-strength fiber skeleton. , In recent years, wood has been widely used in energy storage, sensors, optical equipment, , and other fields. , However, the characteristics of wood, such as excellent biocompatibility, axially arranged porous structure, and anisotropic mechanical properties, have not been considered to guide the design of artificial periosteum. In addition, wood is a rigid material with poor flexibility and limited biofunctions in antibacterial, anti-inflammatory, and osteogenic activities .…”

“…22 Moreover, after delignification treatment, the porous structure and oriented cellulose fiber skeleton of wood can be well maintained, which is expected to be used as an ideal and anisotropic high-strength fiber skeleton. 23,24 In recent years, wood has been widely used in energy storage, 25 sensors, 26 optical equipment, 27,28 and other fields. 29,30 However, the characteristics of wood, such as excellent biocompatibility, axially arranged porous structure, and anisotropic mechanical properties, have not been considered to guide the design of artificial periosteum.…”