Gold Nanorods Enable Five-Dimensional Optical Recording
نویسندگان
چکیده
منابع مشابه
Quantitative optical trapping of single gold nanorods.
We report a quantitative analysis of the forces acting on optically trapped single gold nanorods. Individual nanorods with diameters between 8 and 44 nm and aspect ratios between 1.7 and 5.6 were stably trapped in three dimensions using a laser wavelength exceeding their plasmon resonance wavelengths. The interaction between the electromagnetic field of an optical trap and a single gold nanorod...
متن کاملImaging three-dimensional rotational diffusion of plasmon resonant gold nanorods using polarization-sensitive optical coherence tomography.
We demonstrate depth-resolved viscosity measurements within a single object using polarized optical scattering from ensembles of freely tumbling plasmon resonant gold nanorods (GNRs) monitored with polarization-sensitive optical coherence tomography. The rotational diffusion coefficient of the GNRs is shown to correlate with viscosity in molecular fluids according to the Stokes-Einstein relatio...
متن کاملThree-dimensional defocused orientation sensing of single bimetallic core-shell gold nanorods as multifunctional optical probes.
Bimetallic core-shell gold nanorods (AuNRs) are promising multifunctional orientation probes that can be employed in biological and physical studies. This paper presents the optical properties of single AuNRs coated with palladium (Pd) and platinum (Pt) under scattering-based dark-field (DF) microscopy. Strong longitudinal plasmon damping was observed for the bimetallic AuNRs due to Pd and Pt m...
متن کاملMolecular histopathology using gold nanorods and optical coherence tomography.
PURPOSE To examine the novel application of a commercially available optical coherence tomography (OCT) system toward molecular histopathology using gold nanorod (GNR) linked antibodies as a functionalized contrast agent to evaluate ocular surface squamous neoplasia (OSSN). METHODS GNRs were synthesized and covalently attached to anti-glucose transporter-1 (GLUT-1) antibodies via carbodiimide...
متن کاملPreparation and optical properties of silver chalcogenide coated gold nanorods{
A homogeneous layer of silver sulfide or selenide was coated onto gold nanorods in aqueous solution by exposing Au/Ag core/shell nanorods to S or Se in an oxidizing environment. The formation of the silver chalcogenide layers was confirmed by transmission electron microscopy (TEM) and selective area electron diffraction (SAED). The longitudinal plasmon resonance of the gold nanorods shifted to ...
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ژورنال
عنوان ژورنال: MRS Bulletin
سال: 2009
ISSN: 0883-7694,1938-1425
DOI: 10.1557/mrs2009.149