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 Q_ext 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