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BIOSENSORS: PRINCIPLE, TYPES AND APPLICATIONS - Coggle Diagram
BIOSENSORS: PRINCIPLE, TYPES AND APPLICATIONS
INTRODUCTION
- Definition
- Biosensors are the device in which there is a coupling of biological sensing element with a detector system using a transducer.
- A biosensor is an analytical device which converts a biological response into an electrical signal.
- “A chemical sensing device in which a biologically derived recognition
is coupled to a transducer, to allow the quantitative development of some complex biochemical parameter.”
- Components
- Sensor
- Transducer
- Associated electronics
Principle of a biosensor
- Biological materials + Analyte
- Bound analyte
- Biological response
- Electronic response
- Measurement
Working of a biosensor
The signal processing normally involves subtracting a 'reference' baseline signal, derived from a similar transducer without any biocatalyst membrane, from a similar transducer without any biocatalyst membrane, from the sample signal, amplifying the resultant signal difference and electronically filtering (smoothing) out the unwanted signal noise.
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