▎ 摘　　要

NOVELTY - Wearable flexible sensor comprises through two pieces of interlocking flexible column array graphene thin film to collect signal, flexible micro-array surface graphene film with micro-column array and micro-cylinder of two pieces of film embedded to form an interlocking structure. The flexible micro-array graphene film is prepared by e.g. (i) building micro-column array of polydimethylsiloxane substrate (ii) placing in a plasma etching apparatus, subjecting to oxygen plasma treatment, soaking in polydiene dimethyl ammonium chloride, and drying, and (iii) dripping graphene solution, and drying. USE - The wearable flexible sensor is useful for detecting human body health (claimed). ADVANTAGE - The sensor: has simple preparation, low cost, high repeatability, flexibility and high sensitivity, and no stimulation to measure information in the complete pulse carotid artery and the heart beat waveform; and adheres to human skin. DETAILED DESCRIPTION - Wearable flexible sensor useful for detecting human body health comprises through two pieces of interlocking flexible column array graphene thin film to collect signal, flexible micro-array surface graphene film with micro-column array, micro- cylinder of two pieces of film embedded to form an interlocking structure. The flexible micro-array graphene film is prepared by (i) building a micro-column array of polydimethylsiloxane substrate of 20 mu u height with a height-diameter ratio of 1-2.5. (ii) placing the polydimethylsiloxane substrate in a plasma etching apparatus, subjecting to oxygen-plasma treatment for 10-15 minutes, soaking in 5% polydiene dimethyl ammonium chloride solution for 30-60 minutes, washing using deionized water, and drying in an oven at 40 degrees C, and (iii) dripping 0.3 mg/ml graphene solution, where the content of dropping amount of the coating is 200-467 mu ul/cm2, and drying at 40 degrees C environment to obtain the graphene-based thin film flexible micro-column array.