Acetone vapor-sensing experiments using the integrated system (IMAGE)
Caption
Acetone vapor-sensing experiments using the integrated system: (a) smartphone user interface for (i) function menu, (ii) frequency scanning, (iii) resonance tracking, and (iv) user-defined PID parameter setting; (b) photograph of sensor working with smartphone; the size of the sensing system is compared with a coin with a diameter of 2.5 cm; (c) response of sensing system to increasing concentrations of acetone vapor; (d) response of sensing system to acetone vapor pulses with different concentrations. The concentrations in red refer to acetone vapor pulses. The “Air” texts with blue arrows refer to the moment when air pulses are injected.
Credit
Xuanru Zhang, Jia Wen Zhu, Tie Jun Cui
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License
CC BY-NC-ND