Nanonets for DNA detection
How can we use Nanonets for DNA detection?
Principle of field-effect:
a- Biosensing: DNA probe/target recognition detected by field effect
DNA is naturally charged (phosphate ions) → negative charge Qext at the surface of the semi conductor
b- Electrostatic modulation of the charges in a semi conductor ( and thus of the current) by a voltage or a surface charge
———: no surface charge
- - - -: with a negative surface charge
c- Variant of field-effect biosensing
d- In Summary