## Abstract

We report the development and testing of simulation software, which, combining self-consistent Brownian dynamics and Drift Diffusion simulation techniques in a single simulation domain allows the simulation of the effect of ions and charged molecules on the current flowing through a sensing FET. For sensory applications an aqueous solution is introduced above the transistor gate dielectric and the effect of fixed charges on the transistor current is investigated. We significantly extend previous work [1] by analysing the effects of mobile ions on the system and introduce an initial analysis of the noise associated with the Brownian motion of mobile ions in the solution in order to determine the sensitivity of the FET in measuring the position and number of ions.

Original language | English |
---|---|

Title of host publication | 2010 14th International Workshop on Computational Electronics, IWCE 2010 |

Publisher | IEEE |

Pages | 27-30 |

Number of pages | 4 |

ISBN (Print) | 9781424493845 |

DOIs | |

Publication status | Published - 1 Dec 2010 |

Event | 2010 14th International Workshop on Computational Electronics, IWCE 2010 - Pisa, Italy Duration: 26 Oct 2010 → 29 Oct 2010 |

### Conference

Conference | 2010 14th International Workshop on Computational Electronics, IWCE 2010 |
---|---|

Country | Italy |

City | Pisa |

Period | 26/10/10 → 29/10/10 |

## Keywords

- mathematical model
- biological system modeling
- ions
- solid modeling
- MOSFETs
- equations
- biosensors
- brownian motion
- computerised instrumentation
- field effect transistors