Publication Type:Journal Article
Source:ACS Nano, Volume 7, Number 11, p.10397-10404 (2013)
Keywords:aluminum, Article, Biological materials, Cathodoluminescence, cerium, chemistry, electrode, electrodes, electron, electrons, equipment design, Focused electron beams, Free standing membranes, Imaging techniques, laser, lasers, Lithographic patterning, Luminescence, Materials testing, Mechanical scanning, Methodology, Monte Carlo method, nano-optical, nanomaterial, nanoparticle, nanoparticles, NanoPatterning, Nanostructures, Nanotechnology, Near field optical microscopy, near-field, optics, Optics and Photonics, Photoexcitation, Surface properties, surface property
Demand for visualizing nanoscale dynamics in biological and advanced materials continues to drive the development of subdiffraction optical probes. While many strategies employ scanning tips for this purpose, we instead exploit a focused electron beam to create scannable nanoscale optical excitations in an epitaxially grown thin-film of cerium-doped yttrium aluminum perovskite, whose cathodoluminescence response is bright, robust, and spatially resolved to 18 nm. We also demonstrate lithographic patterning of the film's luminescence at the nanoscale. We anticipate that converting these films into free-standing membranes will yield a powerful near-field optical microscopy without the complication of mechanical scanning. © 2013 American Chemical Society.
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