Coaxial direct ink writing of shear stiffening gel/Ecoflex composite for customized insoles

Multifunctional Polyurethane Composite Foam with Outstanding Anti-impact Capacity for Soft Body Armors

“…These results confirm that the SCS@PU developed offers multifunctional performances. To the best of our knowledge, as shown in Table S2, 12,13,16,17,42,44,45,48 a soft body armor with simultaneous strain-sensing ability and superhydrophobicity has never been reported.…”

“…In recent years, though various soft body armors with enhanced anti-impact capacity have been developed, most of them are incapable of real-time detection of impact forces to evaluate the injuries. − On the other hand, PU foams modified with conductive nanofillers could be used as wearable strain sensors due to their high strain sensitivity, low density, and outstanding compressibility. , A conductive carbon black/PU foam composite fabricated via a unidirectional freeze-drying process was capable of distinguishing compressive strains up to 80% and accordingly was effective in monitoring various human motions . Intuitively, the combination of an STG and conductive nanofillers in PU foam should be able to realize both anti-impact and sensing capabilities.…”

Mouthguards Based on the Shear-Stiffening Effect: Excellent Shock Absorption Ability with Softness Perception

“…Fortunately, numerous emerging materials have been applied in protection fields, especially shear-stiffening materials, which show that the modulus or viscosity increases dramatically when the external strain rates increase . Polyborosiloxane (PBS), a typical shear-stiffening material, exhibits intelligent anti-impact ability through dynamic boron/oxygen dative bonds with different external impact forces. − Such an intelligent ability of PBS has received growing attention from academia and industry in the protection area. For example, Xuan et al prepared an electrical skin (e-skin) by assembling Ag nanowires and polyester film with a PBS/polydimethylsiloxane matrix, which exhibits safeguarding performance with the assistance of PBS.…”

Coaxial Ceramic Direct Ink Writing on Heterogenous and Rough Surfaces: Investigation of Core–Shell Interactions

“…Coaxial DIW, in which two or more materials are simultaneously extruded through the same orifice, provides a method of sensitive material encapsulation. To date, numerous researchers have employed the technique to fabricate core–shell biomaterials, − wearable devices, and flexible electronics . In many cases, the coaxial method provides enhanced interfacial stability and adhesion, as well as offers a protective casing for the active electronic or biomaterial.…”

“…Moreover, the limited reports of coaxial ceramic materials frequently involve micro solid oxide fuel cells. In these instances, the fuel cells are fabricated through conventional extrusion techniques and do not integrate substrate challenges. − Additionally, to date, a vast majority of coaxial DIW applications involve both soft and miscible materials intended for use in ambient conditions. , The use of these materials simplifies the ink design process and removes any concerns of shrinkage, postprocessing challenges, or core–shell coefficient of thermal expansion mismatch.…”