▎ 摘　　要

NOVELTY - The sensor has a graphene paper whose end is formed with a silver coating layer, where specified surface area and side length of the graphene paper are about 60 to 200 m 2 /g and 0.3 to 3 cm. Thickness of a liquid crystal sensor body is about 80 to 120 m. The width of the silver coating layer is about 0.1 to 0.15 mm. USE - Liquid sensor. ADVANTAGE - The sensor has better cycle stability properties, and determines different solvent vapor pressure values, and realizes micro-detection of organic solvents, and identifies components of trace organic solvents, and determines change amount of resistance for about 0.1%. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a liquid sensor manufacturing method (2) a liquid sensor utilizing method. DESCRIPTION OF DRAWING(S) - The drawing shows a photographic view of a liquid sensor.