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• Pantalei, S
• Zampetti, E
• Macagnano, A
• Bearzotti, A
• Venditti, I
• Russo, MV.
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• Pantalei, S
• Zampetti, E
• Macagnano, A
• Bearzotti, A
• Venditti, I
• Russo, MV.
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• Pantalei, S
• Zampetti, E
• Macagnano, A
• Bearzotti, A
• Venditti, I
• Russo, MV.

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Sensors 2007, 7(11), 2920-2928; doi:10.3390/S7112920

Article

Enhanced Sensory Properties of a Multichannel Quartz Crystal Microbalance Coated with Polymeric Nanobeads

Simone Pantalei^1,* , Emiliano Zampetti¹ , Antonella Macagnano¹ , Andrea Bearzotti¹ , Iole Venditti²  and Maria V. Russo²

¹ CNR-IMM, Institute for Microelectronics and Microsystems, via del Fosso del Cavaliere 100, 00133 Rome, Italy ² Department of Chemistry, University of Rome “La Sapienza”, p.le A. Moro 5, 00185 Rome, Italy

* Author to whom correspondence should be addressed.

Received: 1 October 2007 / Accepted: 20 November 2007 / Published: 23 November 2007

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Abstract: In this study the sensorial performances of a four-channel quartz crystalmicrobalance implemented on a single quartz plate are reported and compared with those offour independent quartz crystal microbalances. Particular attention has been devoted to bothcross talk in responses and sensor sensitivity. A recently synthesized nanostructuredpolymer, poly[phenylacetylene-(co-2-hydroxyethyl methacrylate)], has been used aschemical interactive material. The interactions of our sensor system with relative humidityare also reported. The multichannel device shows a better homogeneity of the masssensitivity with a spread of the values less then 4% compared to a 50% spread observed inthe set of four microbalances.

Keywords: multichannel quartz crystal microbalance; chemical sensors; nanostructured polymers.

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