Atmosphere-Specific Response in Graphene Field-Effect Transistors

摘要

Lab-on-a-chip devices with the capability for simultaneous gas detection and ambience characterization are highly sought after as next-generation gas sensors. However, the robust spectroscopic or chromatographic set-ups utilized in contemporary ambience characterization systems are unsuitable for Lab-on-a-chip devices. In this regard, graphene’s facile measurement set-up, huge carrier mobility, compatibility with CMOS technology and extreme sensitivity makes it ideal for this application. Therefore, in continuation of our previous simulation results, in which various gas environments were distinguished via their tuning voltage (TV) induced charge transfer characteristics (Figure 1a), we now demonstrate this concept experimentally.