In this work we focus on poly(hydroxy ethyl methacrylate)/carbon black composites for the electrical and optical sensing of humidity and alcohols. The sensitivity is a non-monotonous function of carbon load, while processing with and without ultrasonic agitation can lead to substantially different sensitivity levels. In the case of a carbon-loaded film, optical sensing is limited by the transparency of the carbon-loaded film, which, nevertheless, can be manipulated within limits through the choice of casting solvent. Electrical sensitivity of the composites is compared to the optical (thickness-based) and capacitance sensitivities of the carbon-free poly(hydroxy ethyl methacrylate) version. Composites offer a clear sensitivity advantage when their optimized, on the basis or electrical response, version is employed. © 2008 Elsevier B.V. All rights reserved.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
Dendrinos, G., Quercia, L., Raptis, I., Manoli, K., Chatzandroulis, S., Goustouridis, D., & Beltsios, K. (2009). Electrical and optical evaluation of polymer composites for chemical sensing applications. Microelectronic Engineering, 86(4-6), 1289 - 1292. https://doi.org/10.1016/j.mee.2008.12.001