Graphene Nano-ribbon based temperature nanosensor and it's characteristic

This paper demonstrates the excellent temperature sensing property of the Graphene Nano-ribbon (GNR). The GNR junction used is of zigzag- armchair-zigzag configuration. The zigzag portion used is metallic in nature and the central region (armchair type) is semiconducting in nature. It is observed that with the increase in temperature from −273°C to 227°C, the conductance of the used sample follows a pattern which is linear in nature. This linear range of the pattern is being used for making the temperature nano-sensor. The range of the temperature is such chosen that it could be utilized for the various medical and industrial based applications. The results show that the temperature nano-sensor has a high resolution of 11095 Ω/°C, large temperature coefficient of resistance (TCR) 6.01 × 10−3°C−1 and wide temperature range −273.15°C to 227 °C.