Fabrication and characterization of ENFET devices for biomedical applications and environmental monitoring

Colapicchioni, C.; Barbaro, A.; Porcelli, Fernando

doi:10.1016/0925-4005(92)80056-4

Cited by 16 publications

(3 citation statements)

References 9 publications

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“…3). This detection limit is markedly lower than those (50-100µM) previously reported for pH-FET biosensors [1,2] and similar to the value (1µM) recently obtained with potentiometric biosensors [23]. It appears clearly that the better detection limit is obtained when the detected specie is NH 4 + .…”

Section: Analytical Characteristics Of the Urea Sensor Based On Ammoncontrasting

confidence: 40%

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Development of new polymeric membranes for ENFETs for biomedical and environmental applications

Jaffrézic‐Renault¹,

Wan²,

Senillou³

et al. 1999

Analusis

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Two ways have been investigated for the preparation of urea ENFETs : covalent bonding of urease directly on the surface of an ammonium sensitive FET and control of the diffusion of charged species into the enzymatic layer on pH-ISFET using additional charged polymeric membranes. Trichlorfon as a representative pesticide is detected using a BuChE-FET sensor which is prepared either with cross-linked BSA-glutaraldehyde membrane or photocross-linkable PVA/SbQ (poly(vinyl alcohol) containing styrylpyridinium) membrane.

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Section: Analytical Characteristics Of the Urea Sensor Based On Ammoncontrasting

confidence: 40%

“…For the determination of urea, two methods of detection have been exploited with ENFET. Either detection of pH changes due to the enzymatic reaction was meaurease sured around the gate surface of a pH-FET [1][2][3][4][5][6][7] or detection of NH 4 + ions enzymatically formed was obtained with an ammonium ion sensitive FET [7,8].…”

Section: Introductionmentioning

confidence: 99%

Development of new polymeric membranes for ENFETs for biomedical and environmental applications

Jaffrézic‐Renault¹,

Wan²,

Senillou³

et al. 1999

Analusis

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“…A critical assessment outlining the advantages of using enzymatic ISFET sensors with acetylcholinesterase for pesticide determination was early reported by Janata et al [ 74 ]. Later on, the group of Eniricerche [ 75 , 76 ] developed an ENFET with the enzyme acetilcolinesterase linked to the amino functional groups of a polysiloxane surface, obtaining a biosensor for paraoxon with good stability and reproducibility.…”

Section: Isfets Applications In the Environmental Fieldmentioning

confidence: 99%

ISFET Based Microsensors for Environmental Monitoring

Jimenez-Jorquera

Orozco

Baldi

2009

Sensors

151

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The use of microsensors for in-field monitoring of environmental parameters is gaining interest due to their advantages over conventional sensors. Among them microsensors based on semiconductor technology offer additional advantages such as small size, robustness, low output impedance and rapid response. Besides, the technology used allows integration of circuitry and multiple sensors in the same substrate and accordingly they can be implemented in compact probes for particular applications e.g., in situ monitoring and/or on-line measurements. In the field of microsensors for environmental applications, Ion Selective Field Effect Transistors (ISFETs) have a special interest. They are particularly helpful for measuring pH and other ions in small volumes and they can be integrated in compact flow cells for continuous measurements. In this paper the technologies used to fabricate ISFETs and a review of the role of ISFETs in the environmental field are presented.

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Biosensors

Schuhmann

Bonsen

2003

Encyclopedia of Electrochemistry

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The sections in this article are Introduction Basic Principles and Setup Application of Biosensors. Principal Considerations Biorecognition Elements Catalytic Biorecognition Elements Bioaffinity Recognition Elements Transducers and Instrumentation Amperometric Electrodes Potentiometric Sensors Conductometric and Impedimetric Transducers Coupling of Biorecognition Elements and Transducers Specific Features of Electrochemical Biosensors Amperometric Biosensors Shuttle Mechanism Using Free‐diffusing Natural Redox Mediators Artificial Redox Compounds as Free‐diffusing Electron‐Transfer Mediators Immobilized Redox Mediators—“Electroenzymes” “Wired” Enzymes by Means of Redox Hydrogels Conducting Polymers Direct Electron Transfer between Redox Enzymes and Electrodes Potentiometric Biosensors Potentiometric Enzyme Biosensors Potentiometric Immunosensors Field‐effect Transistors Conductometric and Impedimetric Biosensors Miniaturization and Future Aspects Miniaturized Transducers Advantages and Problems of Miniaturized Biosensors Multisensor Arrays and Sensor Chips

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Fabrication and characterization of ENFET devices for biomedical applications and environmental monitoring

Cited by 16 publications

References 9 publications

Development of new polymeric membranes for ENFETs for biomedical and environmental applications

Development of new polymeric membranes for ENFETs for biomedical and environmental applications

ISFET Based Microsensors for Environmental Monitoring

Biosensors

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