▎ 摘　　要

NOVELTY - The utility model claims a refractive index sensor based on graphene material, comprising a concave fixing plate; the upper surface of the concave fixing plate fixedly connected with with an L-shaped clamping plate; the inner part of the sliding groove is slidingly connected with an L-shaped sliding plate; between the back surface of the L-shaped sliding plate and the inner back surface of the sliding groove one is provided with a spring one; the threaded rod is sleeved with a hollow pipe; the upper part of the upper surface of the inner upper surface of the upper surface of the threaded rod groove is connected with a adjusting nut; the upper end surface of the inner upper surface of the hollow pipe is provided with a spring; the lower part of the surface opposite to the two hollow tubes is fixedly connected with clamping plate; between the concave fixing plate and two clamping plates is clamped with a graphene refractive index sensor. it is convenient to adjust the mounting position of the sensor; it can make the sensor fixed better; it is convenient to install more different specifications of sensors; even if the mounting position is fixed, the sensor can be randomly disassembled; it is convenient to change and maintain the sensor.