▎ 摘　　要

NOVELTY - The film has a constant voltage unit for outputting 0.1V voltage signal to a conversion unit. An electric signal collecting unit collects a resistance signal of the converting unit. The converting unit collects mechanical energy that is converted into an electric signal, where 5 mg copper-nanowires-graphene oxide is added into 22mL of glycol solution, copper-nanowires-graphene oxide polydimethylsiloxane composite hydrogel is produced by using de-ionized water and a stretching state of a composite film part is returned to an initial state to manufacture the converting unit. USE - Buckling structure based heart tip pulsation sensor copper-nanowires-graphene oxide polydimethylsiloxane composite film. ADVANTAGE - The film is simple in structure, and has high flexibility and high sensitivity, and reduces production cost and repeatability. The film is attached to human skin without stimulation so as to obtain complete information of cardiac apex beat waveform, thus monitoring cardiovascular diseases in an effective manner. DESCRIPTION OF DRAWING(S) - The drawing shows a photographic view of a buckling structure based heart tip pulsation sensor copper-nanowires-graphene oxide polydimethylsiloxane composite film.