期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 189, 期 -, 页码 106-112出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.01.046
关键词
Polyimide; Chemical sensor; Platinum nanoparticles; Resistance; Capacitance; Flexible
资金
- European Union (European Social Fund - ESF)
- Greek National funds through the Operational Program Education and Lifelong Learning of the National Strategic Reference Framework (NSRF) - Research Funding Program
Platinum nanoparticles without any prior chemical modification and poly( 2-hydroxyethyl methacrylate) (PHEMA) have been employed as the transducing and gas sensitive layer respectively for this flexible chemical sensing application. Using a modified magnetron sputtering technique, gas phase platinum nanoparticles have been deposited on top of flexible polyimide substrates. The surface density of such nanoparticle films can be controlled via the overall deposition time, producing devices of varying conductivity. A layer of PHEMA polymer (500-700 nm thick) has been ink-jet printed on top of the nanoparticle film finalizing the sensor's fabrication. By exposing the sensor in ethanol or humidity vapors a change in the film's resistance or capacitance is observed facilitating the detection of such gases. The performance of these sensors has been connected with the nanoparticle film resistance. (C) 2013 Elsevier B.V. All rights reserved.
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