Journal
ACS NANO
Volume 10, Issue 8, Pages 8104-8112Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.6b04440
Keywords
microfluidic sensor; triboelectric; self-powered system
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Funding
- NSFC [51572040]
- Fundamental Research Funds for the Central Universities [CQDXWL-2014-001]
- National High Technology Research and Development Program (863 program) of China [2015AA034801]
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Liquid and gas flow sensors are important components of the micro total analysis systems (ETAS) for modern analytical sciences. In this paper, we proposed a self powered triboelectric microfluidic sensor (TMS) by utilizing the signals produced from the droplet/bubble via the capillary and the triboelectrification effects on the liquid/ solid interface for real-time liquid and gas flow detection. By alternating capillary with different diameters, the sensor's detecting range and sensitivity can be adjusted. Both the relationship between the droplet/bubble and capillary size, and the output signal of the sensor are systematically studied. By demonstrating the monitoring of the transfusion process for a patient and the gas flow produced from an injector, it shows that TMS has a great potential in building a self powered micro total analysis system.
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