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Sample heating in near-field scanning optical microscopy
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Phase contrast image of a typical NSOM probe used in the study with a single spot of light emerging from the aperture. (b) NSOM fluorescence image of a lipid monolayer doped with fluorescent probe molecules. Each bright feature in the image is the fluorescence from a single molecule and has a full width at half maximum of , demonstrating the high spatial resolution obtained with the NSOM probes.

Image of FIG. 2.
FIG. 2.

Bulk emission spectra of perylene-NA polymer as a function of temperature following excitation at 405 nm. The spectra have been normalized to the peak at 475 nm. As temperature increases the ratio between the peaks at 475 and 510 nm increases and there is a slight blueshift in the 510 nm peak.

Image of FIG. 3.
FIG. 3.

(a) Representative plots of sample heating as a function of output power for 5 NSOM probes and (b) an expanded view of the initial heating. In all, approximately 20 NSOM probes were studied and these plots demonstrate the range of heating observed. At low output powers, sample heating rises quickly with output power before leveling off between 55 and 65 °C with output powers above .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Sample heating in near-field scanning optical microscopy