Nanoscale Apertures for Improving Optical Microscope Accuracy (IMAGE)

National Institute of Standards and Technology (NIST)

Nanoscale Apertures for Improving Optical Microscope Accuracy

Caption

This illustration shows an array of apertures with a spacing of 5000 nanometers (nm) ± 1 nm. The apertures pass light through a metal film on a glass slide. Imaging the aperture array with an optical microscope results in apparent errors in the spacing between apertures. Knowledge of the true spacing allows correction of these imaging errors. This calibration process enables accurate measurements of position across a large image.

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NIST

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