▎ 摘　　要

NOVELTY - Preparation of a flexible negative pressure resistance sensing layer involves: 1) providing core-shell structure particles comprising a sacrificial template shell wrapping a core made of conductive micro-nano particles; 2) providing a mixed dispersion liquid containing a high molecular polymer, a conductive filler and a reinforcing filler; 3) mixing the core-shell structure particles with the mixed dispersion liquid, followed by stirring and vacuumizing to form conductive slurry; 4) depositing the conductive slurry on a substrate and drying to form a membrane on the substrate; 5) placing the substrate containing the membrane, into water, such that the sacrificial template in the membrane is dissolved, followed by separating the membrane from substrate, and drying. USE - Method is used for preparing flexible negative pressure resistance sensing layer used in flexible negative pressure resistance sensor (claimed). ADVANTAGE - The prepared flexible negative pressure resistance sensing layer when used in the sensors, enables to eliminate the interference of the contact resistance to the sensing signal and improve the consistency. The sensor prepared has high sensitivity and wide range. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1.flexible negative pressure resistance sensing layer which comprises a conductive elastomer provided with micropores containing conductive micro-nano particles arranged in it. The conductive elastomer is provided with branch-shaped micro-nano holes; and 2. flexible negative pressure resistance sensor comprising electrodes electrically connected to the flexible negative pressure resistance sensing layer.