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Sensors 2006, 6(6), 680-687; doi:10.3390/s6060680
Article
A Microsystem Based on Porous Silicon-Glass Anodic Bonding for Gas and Liquid Optical Sensing
Luca De Stefano 1,*
, Krzysztof Malecki 1 , Francesco G. Della Corte 2 , Luigi Moretti 2 , Ilaria Rea 1 , Lucia Rotiroti 1 and Ivo Rendina 1
, Krzysztof Malecki 1 , Francesco G. Della Corte 2 , Luigi Moretti 2 , Ilaria Rea 1 , Lucia Rotiroti 1 and Ivo Rendina 1
1
Institute for Microelectronics and Microsystems, National Council of Research, Via P. Castellino
111, 80131 Naples, Italy
2
DIMET “Mediterranea” University of Reggio Calabria, Località Feo di Vito, 89060 Reggio Calabria, Italy
* Author to whom correspondence should be addressed.
Received: 15 March 2006 / Accepted: 22 June 2006 / Published: 23 June 2006
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Abstract: We have recently presented an integrated silicon-glass opto-chemical sensor forlab-on-chip applications, based on porous silicon and anodic bonding technologies. In thiswork, we have optically characterized the sensor response on exposure to vapors of severalorganic compounds by means of reflectivity measurements. The interaction between theporous silicon, which acts as transducer layer, and the organic vapors fluxed into the glasssealed microchamber, is preserved by the fabrication process, resulting in optical pathincrease, due to the capillary condensation of the vapors into the pores. Using theBruggemann theory, we have calculated the filled pores volume for each substance. Thesensor dynamic has been described by time-resolved measurements: due to the analysischamber miniaturization, the response time is only of 2 s. All these results have beencompared with data acquired on the same PSi structure before the anodic bonding process.
Keywords: Porous Silicon; Anodic Bonding; Microchamber; Lab-on-Chip.
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MDPI and ACS Style
De Stefano, L.; Malecki, K.; Della Corte, F.G.; Moretti, L.; Rea, I.; Rotiroti, L.; Rendina, I. A Microsystem Based on Porous Silicon-Glass Anodic Bonding for Gas and Liquid Optical Sensing. Sensors 2006, 6, 680-687.
AMA StyleDe Stefano L, Malecki K, Della Corte FG, Moretti L, Rea I, Rotiroti L, Rendina I. A Microsystem Based on Porous Silicon-Glass Anodic Bonding for Gas and Liquid Optical Sensing. Sensors. 2006; 6(6):680-687.
Chicago/Turabian StyleDe Stefano, Luca; Malecki, Krzysztof; Della Corte, Francesco G.; Moretti, Luigi; Rea, Ilaria; Rotiroti, Lucia; Rendina, Ivo. 2006. "A Microsystem Based on Porous Silicon-Glass Anodic Bonding for Gas and Liquid Optical Sensing." Sensors 6, no. 6: 680-687.