Pencil-trace on printed silver interdigitated electrodes for paper-based NO2 gas sensors

The pencil-drawn sensor is expected to enable a simple, low-cost, and reproducible paper-based sensor platform for widely deployed wireless environmental monitoring of NO2. Herein, we demonstrated a rapid prototyping of chemiresistor-type NO2 sensor by mechanical abrasion of an 8B pencil to form a s...

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Veröffentlicht in:Applied physics letters 2015-04, Vol.106 (14)
Hauptverfasser: Zhang, Jiankun, Huang, Lei, Lin, Youjie, Chen, Lu, Zeng, Ziyan, Shen, Leo, Chen, Qi, Shi, Wangzhou
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Sprache:eng
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Zusammenfassung:The pencil-drawn sensor is expected to enable a simple, low-cost, and reproducible paper-based sensor platform for widely deployed wireless environmental monitoring of NO2. Herein, we demonstrated a rapid prototyping of chemiresistor-type NO2 sensor by mechanical abrasion of an 8B pencil to form a stripe of uniform graphitic coating on printed silver interdigitated electrodes (IDEs). The Ag IDEs not only offer a low resistance but also provide the assembly of Ag nanoparticles into exfoliated graphene sheets for the paper-based NO2 gas sensors in order to realise much higher sensitivity and better reproducibility comparing with pencil-drawn sensors directly on weighing paper.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4917063