Biosensing with the singular phase of an ultrathin metal-dielectric nanophotonic cavity

Optical sensors generally rely on abrupt phase changes to detect the presence of an analyte, but oftentimes they require complex nanostructures. Here, Sreekanth et al. use a simple asymmetric thin-film multilayer stack to demonstrate a point of darkness and phase singularity to develop a sensitive b...

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Autores principales: Kandammathe Valiyaveedu Sreekanth, Sivaramapanicker Sreejith, Song Han, Amita Mishra, Xiaoxuan Chen, Handong Sun, Chwee Teck Lim, Ranjan Singh
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2018
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Acceso en línea:https://doaj.org/article/9268346a29704f5fa731e8ea05fc021f
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Sumario:Optical sensors generally rely on abrupt phase changes to detect the presence of an analyte, but oftentimes they require complex nanostructures. Here, Sreekanth et al. use a simple asymmetric thin-film multilayer stack to demonstrate a point of darkness and phase singularity to develop a sensitive biosensor.