| 研究実績の概要 |
We have devised a method to distinguish various gas via the tuning voltage induced charge transfer characteristics. The experimental procedure involved iterative determinations of the difference in the charge neutrality point of graphene in a particular gas environment at two constant tuning voltages applied separately to the gate. This charge neutrality point difference was observed in various environments: dry air, 100% N2 and 100% O2, Ammonia/N2, and (84 ppm, 5ppb) Ammonia/Real Air, and shown to be characteristic of each environment. Additionally, a quasi-equilibrium distribution of adsorbed gases on graphene as a function of ambient temperature and pressure was also observed.
|
| 今後の研究の推進方策 |
In the next phase of work, we are going to do Acetone and Ethanol sensing. In order to improve sensing, we will find out a better graphene coating material. Moreover, atomistic simulations will be carried out to understand the details of sensing mechanism.
|
