Abstract
The design and implementation of a chemi-resistor sensor utilizing platinum nanoparticles and a poly(2-hydroxyethyl methacrylate) (PHEMA) polymer layer is presented. The sensor was fabricated utilizing a magnetron sputtering system for the gas phase synthesis of metallic nanoparticles and an ink-jet printer for the PHEMA polymer delivery. The platinum nanoparticles have been deposited on oxidized silicon substrates which have been previously patterned with gold interdigitated electrodes. Following the nanoparticles deposition a PHEMA polymer layer has been delivered on top, using the ink-jet printing technique. By controlling the density of the metal nanoparticle film, sensors of different sensitivity can be fabricated.
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