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ZIF Nanocrystal-Based Surface Acoustic Wave (SAW) Electronic Nose to Detect Diabetes in Human Breath

By Fabio A. Bahos, Arianee Sainz-Vidal, Celia Sánchez-Pérez, José M. Saniger, Isabel Gràcia, María M. Saniger-Alba and Daniel Matatagui

Abstract

In the present work, a novel, portable and innovative eNose composed of a surface acoustic wave (SAW) sensor array based on zeolitic imidazolate frameworks, ZIF-8 and ZIF-67 nanocrystals (pure and combined with gold nanoparticles), as sensitive layers has been tested as a non-invasive system to detect different disease markers, such as acetone, ethanol and ammonia, related to the diagnosis and control of diabetes mellitus through exhaled breath. The sensors have been prepared by spin coating, achieving continuous sensitive layers at the surface of the SAW device. Low concentrations (5 ppm, 10 ppm and 25 ppm) of the marker analytes were measured, obtaining high sensitivities, good reproducibility, short time response and fast signal recovery

Topics: eNose, gas sensor, SAW, surface acoustic wave, Love wave, diabetes, breath, VOC, ZIF, Zeolite, Biotechnology, TP248.13-248.65
Publisher: MDPI AG
Year: 2018
DOI identifier: 10.3390/bios9010004
OAI identifier: oai:doaj.org/article:4ef28f01053b4c5e8ccfeb8f3a22e81c
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