Cathodoluminescence-activated nanoimaging: noninvasive near-field optical microscopy in an electron microscope.
basic_science · Level V
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- Record sourced from PubMed, PMID 25855869.
- Also identified by DOI 10.1021/acs.nanolett.5b00716.
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Abstract
We demonstrate a new nanoimaging platform in which optical excitations generated by a low-energy electron beam in an ultrathin scintillator are used as a noninvasive, near-field optical scanning probe of an underlying sample. We obtain optical images of Al nanostructures with 46 nm resolution and validate the noninvasiveness of this approach by imaging a conjugated polymer film otherwise incompatible with electron microscopy due to electron-induced damage. The high resolution, speed, and noninvasiveness of this "cathodoluminescence-activated" platform also show promise for super-resolution bioimaging.