▎ 摘　　要

NOVELTY - A flower-shaped zinc oxide/graphene single-ball micro-nanostructure temperature sensor comprises an amplified spontaneous emission (ASE) light source, an optical fiber circulator, a temperature sensor head comprising single-mode optical fibers (a1), multimode single-ball micro-nanofibers as a main temperature-sensitive area, a flower-shaped zinc oxide/graphene material, single-mode optical fibers (a2), and a metal aluminum film, and a spectrometer. The micro-nanofibers are coated with the zinc oxide/graphene material, and connected to the fibers (a1) and fibers (a2) by an optical fiber fusion connection. The light source is connected to the optical fiber circulator through the fibers (a1). The optical fiber circulator is connected to the temperature sensor head through the fibers (a2). The optical fiber circulator is connected to the spectrometer through the optical fibers, and the optical fibers and each device are connected by the optical fiber fusion connection. USE - Flower-shaped zinc oxide/graphene single-ball micro-nanostructure temperature sensor. ADVANTAGE - The flower-shaped zinc oxide/graphene single-ball micro-nanostructure temperature sensor is economical, and has high sensitivity and improved stability. The sensor uses the flower-shaped zinc oxide/graphene temperature-sensitive material and strong interference fiber structure to make the sensor interference spectrum drift due to temperature changes, and the corresponding temperature change can be measured by the drift amount. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of flower-shaped zinc oxide/graphene single-ball micro-nanostructure temperature sensor, which involves processing multimode single-ball micro-nanofibers having a length of 8 cm and a core diameter of 62.5 mu m by oxyhydrogen flame fusion taper treatment to obtain multimode single-ball micro-nanofibers, preparing a flower-shaped zinc oxide/graphene material by ultrasonically-dispersing 15 mg graphene powder in 40 ml deionized water for 2 hours, adding a dispersed graphene solution comprising 3.5 g zinc nitrate, 4.8 g citric acid and 100 ml deionized water, stirring at 75 degrees C for 1.5 hours, placing in a constant temperature drying cabinet at 90 degrees C for 1.5-2 hours, adding 1.5 mol/l sodium hydroxide solution, adjusting the pH of the obtained suspension to 9.5, transferring the suspension to a reaction kettle, placing in a constant temperature drying cabinet at 125 degrees C for 15-16 hours, naturally cooling, washing the obtained product 4-5 times with deionized water, and centrifuging at 5000 rpm for 15 minutes, preparing a single-mode-tapered multimode-single-mode fiber structure by connecting two single-mode optical fibers with a length of 5 cm and multi-mode single-ball micro-nanofibers, shortening an unwelded end of the fibers (a2) in the fiber structure, and coating the fiber structure with the aluminum metal film, and fixing the fiber structure coated with the aluminum metal film to a glass substrate, washing with alcohol and deionized water to remove residual impurities, immersing the obtained product in a flower-shaped zinc oxide/graphene aqueous solution, placing in a constant temperature electric blast drying oven, and performing drying treatment, such that the flower-shaped zinc oxide/graphene material is tightly combined with the multimode single-ball micro-nano fibers to form temperature sensor head.