Nanoscale, super-resolution imaging, plasmonic fiber probe bypasses the diffraction limit without complex/ unstable light setups

https://www.eurekalert.org/news-releases/1122434

"imaging probes require difficult-to-generate radially polarized light... overcome using focused ion beam etching produced 15 nm radius tip, significantly sharper/ more consistent, enabling use with standard linearly polarized light so easier to use/ less prone to alignment errors... double-slit concentrates light into nanoscale spot... reflective surface recycles optical energy enhancing field at tip 6X... maintains high performance across wide range visible light, nearly matches Atomic Force Microscopy precision"