Scientists push the boundaries of manipulating light at the submicroscopic level
https://phys.org/news/2023-03-scientists-boundaries-submicroscopic.html
"light moved within distance 50X smaller than own wavelength at point where the light is confined... determines limits for observability of nanoparticles and intensity and precision of light-based devices such as optical tweezers... actively control confined electromagnetic fields... manipulation micro and nanometer-sized objects, including biological particles... sizeable enhancement of sensitivity resolution of microscopic sensors... sorting and rational assembly of bio-, chem-, and soft nanoparticles"
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