Development and performance of a semiautomated 200 MHz surface acoustic wave resonator array‐based sensor test apparatus

A semiautomated pulse injection and data analysis system utilizing 200 MHz surface acoustic wave resonators has been constructed. A cell consisting of a separate sample splitting chamber, sample transfer lines, and sensor device areas has been constructed to allow individual temperature control over the regions. Experiments involving injections of hexane, trichlorobenzene, and 1% (w/v) of biphenyl in hexane show that all three temperatures play an important role in the magnitude and time dependency of the SAW response. Flow rate is also shown to be an important factor. The capabilities of the system have been demonstrated with uncoated and poly(isobutylene) coated devices.