We report a study of light coupling at junctions of crossed SnO2 nanofiber as a function of the gap separation, showing measurable fluctuations in power transfers when nanofibers are separated by less than 10 nm. The coupling efficiency, k, can be significantly modulated and analytical measurements can be made when nanofiber junctions encased in environment-responsive matrices are exposed to different chemical stimuli. These nanofiber junctions could play important roles in localized sensing devices, including force-based measurements, and/or chemically-induced light modulators. 

Environment-responsive modulation of light via nanofiber junctions

243rd National Meeting (2012)

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