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Carbon Nanotube Inkjet Printing Based Resettable Sensor for Online Scale Monitoring

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In this paper, a new type of sensor and associated system for complete online monitoring of scale deposition with great accuracy and reliability is fabricated and characterized. The system is based on carbon nanotubes (CNTs), which have unique sensing/electronic properties along with physical and chemical stability in corrosive and hostile environments required for the oil and gas application. CNTs inkjet printing technique is used to fabricate the CNTs sensor. The sensitivity of the films, real time monitoring of brine solution, stability of the films in various solvents and fluids and the ability of setting and resetting of the sensor are studied. The results of these studies indicate that adding of one brine solution on the surface of the CNTs inkjet printing increases the resistance from 0.50 kΩ to 1.50 kΩ. The CNTs inkjet printing sample is found to be stable even after 48 hours of soaking the whole sample in DI-water. This sensor not only shows good sensing response for detection of the deposition of brine, but can also be easily reset back many times by just wash it with DI-water. This simple sensor is ideally suited for real time monitoring and the response time of the film is found to be from 15–30 s.
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Keywords: CNTs; Inkjet Printing; Scale and Electrical Resistance; Sensors

Document Type: Research Article

Affiliations: 1: Department of Mechanical and Material Engineering, Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates 2: Department of Electrical Engineering and Computer Science, Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates 3: Department of Material and Metallurgical Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, United States

Publication date: January 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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