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. 2019 Dec 6;19(24):5382. doi: 10.3390/s19245382

Figure 3.

Figure 3

Acoustic array designs: (a) Modular multi-sensor array; (b) monolithic multi-sensor array; (c) virtual sensor array based on different signal responses obtained from a single sensor; and (d) virtual sensor array based on the combination of sample separation by gas chromatography (GC) and subsequent peak detection by a single sensor.