Two-dimensional MXene nanosheets on nano-scale fibrils in hierarchical porous structure to achieve ultra-high sensitivity

Abstract

The complex hybrid nanostructure combining two-dimension (2D) conductive material and hierarchical nanoscale skeleton plays an important role to enhance its piezoresistive sensitivity. To construct such a novel hybrid nanostructure, a...

Enhanced Interface Bonding of Segregated Conductive Elastomeric Foams by Dynamic Cross-Linking Reshuffling: Toward Highly Sensitive Piezoresistive Sensors

“…Piezoresistive sensors are extensively utilized in a range of fields, including medical examinations, health monitoring, and sports monitoring, due to their simple structure, convenient assembly, and stable and reliable performance. − However, traditional piezoresistive sensors are mostly made of rigid materials and are difficult to be applied on flexible surfaces such as human skin, which limits the use in flexible wearable devices. , In order to solve these problems, conductive polymer composites (CPCs) have been developed for flexible sensing materials due to their significant advantages, such as lighter weight, better elasticity, excellent processing performance, and adjustable performance. , Additionally, the design of three-dimensional porous structure in CPC would result in the reduction of the modulus of the composites, contributing to the improved flexibility and sensitivity of conductive polymer based piezoresistive sensors. − With supercritical carbon dioxide as a foaming agent, supercritical gas foaming is a green and effective way to prepare conductive polymer foams as highly sensitive flexible piezoresistive sensors. , …”