▎ 摘　　要

NOVELTY - The device has a detecting light source device (1) for providing light beam to a refractive index probe (2). An information beam extracting device (3) receives reflected light beam with refractive index information. The refractive index probe is connected with a coupling prism (21) e.g. D-shaped prism, trapezoidal prism or triangular prism, and a transparent substrate (22). A surface of a graphene film (23) is formed with a sample groove (24) that is matched with a sound wave generating device (25) e.g. sound wave generator or speaker, to test sample refractive index. USE - Device for detecting refractive index of a sample e.g. solid, liquid, gas, plasma, biological molecules and biological tissue or biological cells (all claimed) based on high-sensitivity graphene surface wave. ADVANTAGE - The device adopts the sound wave generating device to quickly change refractive index of the sample and reduces sample refractive index measuring time. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for detecting refractive index of a sample based on high-sensitivity graphene surface wave. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a device for detecting refractive index of sample based on a high-sensitivity graphene surface wave. Detecting light source device (1) Refractive index probe (2) Information beam extracting device (3) Coupling prism (21) Transparent substrate (22) Graphene film (23) Sample groove (24) Sound wave generating device (25)