We simulate bio chips that consist of a semiconductor that is connected to a "bio material", e.g. a charged molecule in a liquid (electrolyte).
An electrical or optical signal in the semiconductor is generated to detect DNA, proteins or the pH value.
The semiconductor can be, for instance, a GaN/AlGaN HEMT, a silicon-on-insulator (SOI) transistor or a nanowire.
More information: Bio chips

• self-consistent Schrödinger, Poisson-Boltzmann and current equations for semiconductor/electrolyte systems
• 1D, 2D, 3D
• self-consistent Henderson-Hasselbalch equation for concentration of buffer ions
• site-binding model for interface charges

Poisson-Boltzmann equation: The Gouy-Chapman solution

Electrolyte Gate AlGaN/GaN Field Effect Transistor as pH Sensor
(Ion-Selective Field Effect Transistor)

Si-SiO₂ electrolyte sensor

Detection of proteins with a SOI (silicon-on-insulator) electrolyte sensor

...available on request.
Contact stefan.birner [at] nextnano.de for further information.

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