Journal
APPLIED PHYSICS LETTERS
Volume 106, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4917063
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Funding
- National Natural Science Foundation of China [50972091]
- Shanghai Municipal Science and Technology Commission [12120502900]
- Key Laboratory of Molecular Imaging Probes and Sensors for Shanghai Universities
- Wuhu Token Sciences Co., Ltd.
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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. (C) 2015 AIP Publishing LLC.
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