3-Dimensional super-resolution by spectrally selective imagingChemical Physics Letters, Vol. 292, No. 1-2. (31 July 1998), pp. 183-187.
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AbstractThe mutual spatial positions of individual pentacene molecules embedded in a p-terphenyl host crystal, residing within the same diffraction-limited volume, are determined with far-field optics with an accuracy far below the Rayleigh distance. This is achieved by spectrally selective imaging, an approach based on the combination of confocal microscopy, single-molecule detection and position-sensitive imaging. It is demonstrated that the molecules can be localized in three dimensions with a precision of 40 nm in the lateral and 100 nm in the axial dimension which represents an enhancement by a factor of 20 and 65, respectively, compared to the Rayleigh distance at the used numerical aperture of the microscope.
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