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18 April 2003 Porous-Si based bioreactors for glucose monitoring
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Abstract
Biosensors are a very useful tool to produce drugs or to monitor chemical species through their product of reaction. The sensor is fabricated bounding on its surface specific enzymes that can accomplish the synthesis function. We studied the possibility to fabricate Si-based micro-biosensors to detect glucose in water solutions using porous Si (PS) as surface to bound the specific enzyme. We ideated and fabricated a novel biosensor structure based on a PS membrane that can be used for glucose monitoring and for drug production, by properly choosing the enzyme to immobilize in the reactor. The fabrication details of the structure, having a suspended and auto-supporting PS membrane, through surface micromachining processes, ULSI compatible, are shown. Micro channels localised below the membrane will allow the buffer solution flow through the porous matrix. Moreover, in this work we acquired the know-how on the enzyme manipulation, bonding and detection on Si-based surfaces. The enzyme that accomplish the synthesis function is the glucose oxidase. We deposited it on different substrates: PS, bulk Si and on glass. On these samples photoluminescence, absorbance and optical microscopy measurements were performed.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Manuela Fichera, Sebania Libertino, and Giuseppe D'Arrigo "Porous-Si based bioreactors for glucose monitoring", Proc. SPIE 5119, Bioengineered and Bioinspired Systems, (18 April 2003); https://doi.org/10.1117/12.501338
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