Inkjet Printing of Chemiresistive Sensors for the Detection of Volatile Organic Compounds
Abstract:We report about inkjet printing of chemiresistive sensors for the detection of volatile organic compounds (VOCs). The sensor comprises three fully inkjet-printed layers of (i) silver interdigitated electrodes (IDE), (ii) multi-walled carbon nanotubes (MWCNTs) and (iii) poly (styrene-co-maleic acid) partial isobutyl/methyl mixed ester (PSE) deposited on glass and polymer substrates. A composite-like structure of PSE and MWCNTs could be obtained by applying optimized printing parameters. Thus, this layer can act as chemiresistive vapor sensor due to the change of electrical resistance in presence of selected VOCs. We have studied the response of the sensors to various VOCs and different vapor concentrations of the VOCs. To investigate the morphology and the properties of the inkjet-printed thin films, profilometry and scanning electron microscopy (SEM) as well as electrical measurements were employed.
Document Type: Research Article
Publication date: 2012-01-01
For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.
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