Fluorophore-nanostructure combinations

The angular dependence is a direct result of the dipole nature of the plasmon polarization, the excitation polarization, and the directionality of the transition dipole moment. This is the most difficult parameter to predict and control, especially in multimode plasmon suppcxting substrates. In addition, as shown in the previous section, there is competition between the rate of nonradiative energy transfer and the effective field enhancement. Hence, for each fluorophore-nanostructure combination there is a delicate balance to be found. Therefore, finding the optimal distance from the enhancing surface is essential for maximizing SEF. 

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