The chemical gas sensor area has gained large improvements from the
nanoscience technology, e.g., more reproducible processing including control
on the nanoscale of annealing procedures, which implies improved long-term
stability. Analytical tools have developed towards detection and investigation
of ever smaller size phenomena. This has been of importance for the key
problem of chemical gas sensors, the detailed understanding on the nanoscale
level of the gas-sensing mechanism. In this chapter, which deals with FET (field
effect transistor) gas sensor devices, we will review analytical tools that provide
information about the detection mechanism with special emphasise on the FET
sensor area. The DRIFT, diffuse reflection infrared Fourier transform, spectroscopy
as a rather new and very important tool is reviewed. Theoretical modelling
will speed up the process to provide further details in the mechanistic
studies. Examples will be given in this chapter. A number of other important
analytical tools will be briefly described.
US: Springer , 2009, XV. 153-(27pp) p.