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Absorption efficiency of gold nanorods determined by quantum dot fluorescence thermometry
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Extinction coefficient of the GNR aqueous solutions used for laser-induced thermal loading experiments. Inset shows the electron transmission image of a typical GNR. (b) and (c) Size dispersion histograms of length and width, respectively.

Image of FIG. 2.
FIG. 2.

(a) Peak emission wavelength of the CdSe-QD fluorescence as a function of the GNR solution temperature. Dots are experimental data and dashed line is the best linear fit. (b) Left: schematic diagram of the double-beam confocal microscope used in this work. Right: fluorescence emission spectrum obtained for the CdSe-QDs incorporated into the GNR solution under 488 nm excitation in the presence/absence of optical excitation of the surface plasmon resonance of GNRs.

Image of FIG. 3.
FIG. 3.

(a) On focus temperature increment as a function of the 808 nm excitation laser power. Dots are experimental data; solid line is the best linear fit of experimental data. Inset shows the absorption efficiency as a function of the GNR concentration. (b) Simulated absorption, scattering, and extinction efficiencies of 12 nm width and 47 nm length GNRs. Inset shows the geometrical reproduction of the GNR based on a cubic array of 38 500 dipoles.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Absorption efficiency of gold nanorods determined by quantum dot fluorescence thermometry