▎ 摘　　要

NOVELTY - Printed nanocomposite material comprises a polymer, a crosslinking agent and a conductive nanomaterial, where the nanocomposite material is printed in the form of a film or a sheet. USE - The material is useful in printed strain sensor which is used to measure power output of a cyclist (all claimed). ADVANTAGE - The material: has unique mechanical and electrical properties; has high gauge factor and conductivity; exhibits strain-rate independent sensitivity; and has high degree of sensitivity consistently across a range of strain rates and cycling frequencies. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a printed strain sensor comprising the printed nanocomposite material; (2) manufacturing (M1) the printed strain sensor, comprising printing the nanocomposite material onto the substrate in the form of a film, drying the printed nanocomposite material, and optionally applying an acrylate copolymer to the printed nanocomposite material after drying to encapsulate the sheet or film; and (3) measuring power output of a cyclist, comprising applying at least one of the printed sensors to a frame of a bicycle, where the frame comprises a seat tube, a bottom bracket shell, a top tube, a down tube, a chain stay, a seat stay and a head tube, the printed sensors are placed on a lower segment of the seat tube above the join between the bottom bracket shell and the seat tube, and the oscillatory strains in the bicycle are maximized from the rotations of the pedals.