1. Development and Characterization of a Novel Low-Cost Water-Level and Water Quality Monitoring Sensor by Using Enhanced Screen Printing Technology with PEDOT:PSS
- Author
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Bei Wang, Manuel Baeuscher, Piotr Mackowiak, Xiaodong Hu, Klaus-Dieter Lang, Ha-Duong Ngo, Moritz Hubl, Markus Woehrmann, Martin Schneider-Ramelow, Nils Juergensen, Katharina Becker, and Publica
- Subjects
Materials science ,lcsh:Mechanical engineering and machinery ,Capacitive sensing ,water quality monitoring ,02 engineering and technology ,Substrate (printing) ,01 natural sciences ,Article ,PEDOT:PSS ,Conductive ink ,lcsh:TJ1-1570 ,conductive polymer ,Electrical and Electronic Engineering ,Sheet resistance ,Conductive polymer ,business.industry ,Mechanical Engineering ,010401 analytical chemistry ,screen printing ,capacitive sensor ,adhesive peeling force test ,poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Control and Systems Engineering ,Screen printing ,Optoelectronics ,Adhesive ,ddc:620 ,0210 nano-technology ,business ,water-level sensor - Abstract
A novel capacitive sensor for measuring the water-level and monitoring the water quality has been developed in this work by using an enhanced screen printing technology. A commonly used environment-friendly conductive polymer poly(3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) for conductive sensors has a limited conductivity due to its high sheet resistance. A physical treatment performed during the printing process has reduced the sheet resistance of printed PEDOT:PSS on polyethylenterephthalat (PET) substrate from 264.39 Ω/sq to 23.44 Ω/sq. The adhesion bonding force between printed PEDOT:PSS and the substrate PET is increased by using chemical treatment and tested using a newly designed adhesive peeling force test. Using the economical conductive ink PEDOT:PSS with this new physical treatment, our capacitive sensors are cost-efficient and have a sensitivity of up to 1.25 pF/mm.
- Published
- 2020