Sensing of Biomolecules - Bionanoelectronics: Bioinquiring and Bioinspired Devices - page 102

different organic substances and drop cast onto circular interdigitated electrodes.
The variation of electrical resistance is monitored during the breath and linked with
the concentrations of VOCs beyond which an early warning is triggered. Other
diseases, such as diabetes, lung, breast, colorectal, and prostate cancers, are also
detected via exhaled breath ( Peng et al. 2010 ). Detection of VOCs is performed
in this case by a nanoarray of functionalized nanoparticles, which are able to
discriminate between VOC levels in the breath of healthy and ill patients. The
sensors were implemented by successive drop-casting solutions of nanoparticles
modified with different molecules on ten pairs of Ti/Au interdigitated electrodes
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