26-07-2012, 01:35 PM
Biosensors
[attachment=29057]
Definition of a biosensor
A biosensor:
A device that uses specific biochemical reactions mediated by isolated enzymes, immunosystems, tissues, organelles or whole cells to detect chemical compounds usually by electrical, thermal or optical signals. Source:
PAC, 1992, 64, 148 (Glossary for chemists of terms used in biotechnology.)
Sample handling
Micro) fluidics
Concentration (increase/decrease)
Filtration/selection
Data Analysis
Response variable ® vs time(t): Example of response variables: Refractive index Potential Current Frequency Mass Pressure Temperature
Common signal error sources
Inhomogenous sample
Bubbles/flow artifacts
Temperature
Electromagnetic interferance
Electronic unstability
Unstable chip/detection layer
[attachment=29057]
Definition of a biosensor
A biosensor:
A device that uses specific biochemical reactions mediated by isolated enzymes, immunosystems, tissues, organelles or whole cells to detect chemical compounds usually by electrical, thermal or optical signals. Source:
PAC, 1992, 64, 148 (Glossary for chemists of terms used in biotechnology.)
Sample handling
Micro) fluidics
Concentration (increase/decrease)
Filtration/selection
Data Analysis
Response variable ® vs time(t): Example of response variables: Refractive index Potential Current Frequency Mass Pressure Temperature
Common signal error sources
Inhomogenous sample
Bubbles/flow artifacts
Temperature
Electromagnetic interferance
Electronic unstability
Unstable chip/detection layer