Effect of Graphene Derivatives and its Concentration for Soil Moisture Sensing Properties

Abstract

In this thesis work, we devised a different concentration and morphology of graphene oxidebased susceptible capacitive sensor. This sensor is designed as an inter digitated electrodes (IDE) and drop cast of chemically synthesized graphene oxide as the sensing platform. The IDE has fabricated by the MEMS fabrication technique. Response of the sensor changes from 1745% to 6275% for the soil moisture change from 1% to 23%. The noticed response time is 280 to 300 seconds to measure soil moisture. During in situ soil moisture measurement salt concentration is one factor that affects response and for that, we notice that output varies by 6%.