Novel Thermal Detectors
At present, vanadium oxide and amorphous silicon (a-Si) microbolometers are technologies of choice for uncooled thermal imaging. However, their sensitivity limitations  and the still signicant prices encouraged many research teams to explore other IR sensing techniques with the potential for improved performance with reduced detector costs. Recently, thermal-imaging modules for less than $1000 are produced . It means a 10-fold reduction in costs, compared with the approximate price for current IR imaging systems (see Table 8.1) .