Fabrication, nanofibers, principles

Optical sensors are relatively new and not much work has been carried out in this field. From first principles, the sensitivity of an optical sensor would depend on the amount of fluorescence emitted which in turn is proportional to the available area of the interface. Thus by change in morphology, if pores or pockets could be introduced the sensitivity would also increase proportionately. In the case of nanofibers this is inadvertent as the available area by itself is quite large and when porous fibers are used, the further increase is manifold. Thus, nanofibers would be the best-suited materials for fabrication of optical sensors. 

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