Sustainable Carbon Aerogels from Polyolefin Plastics for High-Linearity Bidirectional Strain Sensing

Abstract Achieving highly linear and sensitive strain sensing under both tensile and compressive deformation remains a critical challenge in wearable electronics, as it demands a conductive network capable of reversible reconfiguration without compromising structural uniformity. This challenge is further intensified in hierarchical carbon nanostructures, where catalyst deactivation and unregulated carbon supply frequently lead to nonuniform nanocarbon growth and severely heterogeneous conductive