Near-field microscopy by elastic light scattering from a tip
@article{Keilmann2004NearfieldMB, title={Near-field microscopy by elastic light scattering from a tip}, author={Fritz Keilmann and Rainer Hillenbrand}, journal={Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences}, year={2004}, volume={362}, pages={787 - 805} }
We describe ultraresolution microscopy far beyond the classical Abbe diffraction limit of one half wavelength (λ/2), and also beyond the practical limit (ca. λ/10) of aperture–based scanning near–field optical microscopy (SNOM). The ‘apertureless’ SNOM discussed here uses light scattering from a sharp tip (hence scattering–type or s–SNOM) and has no λ–related resolution limit. Rather, its resolution is approximately equal to the radius a of the probing tip (for commercial tips, a<20 nm) so that…
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