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We propose a novel multi-photon evanescent wave (MPEW) excitation modality for upconverting nanoparticles (UCNPs) based microscopy. Experimental results show this new imaging method for UCNPs is nonscanning, ultrahigh contrast and high spatiotemporal resolution.
We report a facile method to coat GNRs by silica shell, which greatly improves GNRs' biocompatibility and chemical stability in applications without any obvious side effect on their attractive optical properties.
A sensitive biosensor based on localized surface plasmon resonance of gold nanorods is fabricated to detect streptavidin. Gold nanorods are immobilized on glass through BSA-biotin instead of chemisorbed method. The detection limit is 1 muM.
Enhancement of fluorescence of streptavidin conjugated with gold nanorods (GNRs) was observed. The impact of GNRs with different surface plasmon resonance bands and different concentrations to the efficiency of the fluorescence enhancement was studied.
We report an effective method to synthesize gold nanorods with tunable longitudinal extinction peak wavelength from 781 to 955 nm depending on the amount of NaCl added. Those as-prepared gold nanorods are helpful for bioimaging.
Plasmon-resonant gold nanorods were used as high absorption contrast agents for optical coherence tomography (OCT). It is shown that nanorods imaging, with resonance wavelengths overlapping OCT source, can provide more information than conventional OCT images.
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