FCSXpert Solutions: Fluorescence Correlation Spectroscopy Simplified!.
## FCS Classroom

#### List of FCS Equations for Various Physical Processes

The table below gives the mathematical forms of the correlation functions for several common physical processes. See the table at the bottom-left for parameter definitions:

*Note: For simplicity's sake, we have replaced 'Δt' (used in What is FCS? and
Mathematics of Autocorrelation sections) with 't'.*

Process | G(t) |
---|---|

1D Diffusion | |

2D Diffusion | |

3D Diffusion | |

Multicomponent 3D Diffusion | |

3D Diffusion with Directed Flow | |

Chemical kinetics where binding produces a signal otherwise not present (e.g. FRET) | |

3D Diffusion with Intersystem Crossing | |

3D Diffusion with System Correction |

*Note: For simplicity's sake, we have replaced 'Δt' (used in What is FCS? and
Mathematics of Autocorrelation sections) with 't'.*