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We demonstrated the high-spatial-resolution imaging of label-free biological cells using an electron beam excitation-assisted optical (EXA) microscope without irradiation damage by the electron beam. An EXA microscope can be used to observe a specimen with a nanometric light source excited in the $$\mathrm{Si}_{\mathrm{3}}\mathrm{N}_{\mathrm{4}}$$ Si 3 N 4 membrane by an electron beam...
A plastic scintillator film for use in an electron beam excitation-assisted (EXA) optical microscope is characterized. The thin film scatters an incident electron beam weakly and generates high intensity nanoscale luminescence excited by the beam spot. For high spatial resolution and signal to noise, an EXA microscope requires a thin high-efficiency scintillator film. Homogeneous plastic scintillators...
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