Photonic Lenses with Whispering Gallery Waves at Janus Particles
Igor V. Minin, Oleg V. Minin, Yinghui Cao, Bing Yan, Zengbo Wang,, Boris Luk'yanchuk
TL;DR
This paper demonstrates that Janus particles with truncated surfaces can support whispering gallery waves, enabling sharp resonances and super-resolution in optical lithography through optimized field localization.
Contribution
It introduces a novel mechanism of field localization using whispering gallery waves on Janus particles with truncated surfaces.
Findings
Sharp resonances observed on truncated Janus particles.
Super-resolution achieved in optical lithography.
Resonance mechanism linked to whispering gallery waves.
Abstract
We show that electric field on the plane surface of truncated sphere or cylinders (so called Janus particles) have sharp resonances versus the depth of removed segment of a sphere or cylinder. These resonances are related to the excited whispering gallery waves caused by truncation. It is a new mechanism of the field localization. Optimization of this effect for cylinders permits to reach a super resolution in the line thickness what can be used for contacting optical lithography.
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