Light: Science & Applications (Jan 2022)
Nanoscale mapping of optically inaccessible bound-states-in-the-continuum
Abstract
The optically inaccessible bound-states-in-the-continuum (BIC) is probed via sub-1-nm electron beam, where the cathodoluminescence emissions from Si nanoantenna arrays are able to reveal the coherent interaction length of quasi-BIC resonances.