Quartz Enhanced Photoacoustic Spectroscopy for Detection of Improvised Explosive Devices and Precursors

Figure 6

(a) a micrograph of a set of microresonator tubes manufactured by cutting and polishing of stainless steel needles. (b, left) A representative layout of the QTF and microresonator assembly; (b, right) a micrograph of the microresonator assembled very close to the QTF inside the optical cell of our QEPAS sensor.

(a)  

(b)