Abstract
A facile approach for the fabrication of large-scale interdigitated nanogap electrodes (nanogap IDEs) with a controllable gap was demonstrated with conventional micro-fabrication technology to develop chemocapacitors for gas sensing applications.
Highlights
Nanogap devices have attracted numerous fundamental and application oriented studies because of their great potential in solving challenging problems at the molecular and nano scale.[1]
A number of recent investigations prove that acetone, as one of the biomarkers in human breath, represents for diabetes diagnosis because a relatively high concentration can be an indication of diabetes.[23,24,25]
We report our preliminary studies of acetone adsorption on nanogap IDEs at room temperature
Summary
Taking into account the rapid progress of gas sensing applications, detection at low concentration is one of the greatest possibilities in using nanogap devices.[13,14,15,16,17,18,19] Up to now, there are not many studies on the detection of volatile organic compounds (VOCs) with nanogap devices. A number of recent investigations prove that acetone, as one of the biomarkers in human breath, represents for diabetes diagnosis because a relatively high concentration can be an indication of diabetes.[23,24,25] it is essential and signi cant to effectively detect acetone gas in different ranges of concentration. Inspired by these promising goals in the eld of sensing devices, we focused on the exploration of gas sensing properties of nanogap IDEs. There has been signi cant progress in. Based on characteristics of the active layer PVPH combined with the corresponding structure of nanogap IDEs and the addition of nanoparticles (NPs), the devices' performance was further examined under different humidity conditions
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