- The WO3 based gas sensor is based on hall effect.
- Hall Effect is a magnetoelectric effect which was discovered, studied and applied very early.
- The automatic "Hall Effect Test System" (HETS) which is completed recently is described in this paper in detail.
- The conclution is that this gas sensor based hall effect is a prospective gas sensor of new type.
- The electrical properties of the CuInSe 2 thin films are studied by the Hall effect measurement system.