def fuller(target, MA, MB, vA, vB, temperature='pore.temperature',
           pressure='pore.pressure'):
    r"""
    Uses Fuller model to estimate diffusion coefficient for gases from first
    principles at conditions of interest

    Parameters
    ----------
    target : OpenPNM Object
        The object for which these values are being calculated.  This
        controls the length of the calculated array, and also provides
        access to other necessary thermofluid properties.

    MA : float, array_like
        Molecular weight of component A [kg/mol]

    MB : float, array_like
        Molecular weight of component B [kg/mol]

    vA:  float, array_like
        Sum of atomic diffusion volumes for component A

    vB:  float, array_like
        Sum of atomic diffusion volumes for component B

    pressure : string
        The dictionary key containing the pressure values in Pascals (Pa)

    temperature : string
        The dictionary key containing the temperature values in Kelvin (K)
    """

    T = target[temperature]
    P = target[pressure]
    MAB = 2*(1.0/MA+1.0/MB)**(-1)
    MAB = MAB*1e3
    P = P*1e-5
    value = 0.00143*T**1.75/(P*(MAB**0.5)*(vA**(1./3)+vB**(1./3))**2)*1e-4
    return value
r"""
    Uses Fuller model to estimate diffusion coefficient for gases from first
    principles at conditions of interest

    Parameters
    ----------
    target : OpenPNM Object
        The object for which these values are being calculated.  This
        controls the length of the calculated array, and also provides
        access to other necessary thermofluid properties.

    MA : float, array_like
        Molecular weight of component A [kg/mol]

    MB : float, array_like
        Molecular weight of component B [kg/mol]

    vA:  float, array_like
        Sum of atomic diffusion volumes for component A

    vB:  float, array_like
        Sum of atomic diffusion volumes for component B

    pressure : string
        The dictionary key containing the pressure values in Pascals (Pa)

    temperature : string
        The dictionary key containing the temperature values in Kelvin (K)