نتایج جستجو برای: glass nanoparticles

تعداد نتایج: 177649  

The Chalcogenide glasses were fabricated by melting and quenching techniques in the Se-Ge system at the presence of 1mol% Ga and 3, 5, and 7mol% Sn. Differential Scanning Calorimetry (DSC) analysis was conducted to extract the heat treatment of the samples. Fourier Transform Infrared (FTIR) spectroscopy analysis was also performed in a range of 2-16µm. The Glass samples were heat-treated at 450...

Journal: :Optics letters 2012
Khalid Askar Blayne M Phillips Xuan Dou Juan Lopez Carl Smith Bin Jiang Peng Jiang

Here we report a simple and scalable bottom-up technology for assembling close-packed nanoparticle monolayers on both sides of a glass substrate as high-quality antiglare coatings. Optical measurements show that monolayer coatings consisting of 110 nm silica nanoparticles can significantly reduce optical reflectance and enhance specular transmittance of the glass substrate for a broad range of ...

Journal: :Analytical and bioanalytical chemistry 2005
Kadir Aslan Joseph R Lakowicz Chris D Geddes

In this critical and timely review, the effects of anisotropic silver nanostructures on the emission intensity and photostability of a key fluorophore that is frequently used in many biological assays is examined. The silver nanostructures consist of triangular, rod-like, and fractal-like nanoparticles of silver deposited on conventional glass substrates. The close proximity to silver nanostruc...

2004
S. Melle F. Torres A. Juliá P. García-Mochales F. Briones

The square arrays are fabricated by e-beam lithography on polycrystalline Co sputtered on glass substrates. First, a continuous layer, 1000 nm thick, of polycrystalline Co is grown. This thickness guarantees optical opacity for the light used in the experiments, a 632.8 nm wavelength 1.5 mW laser. Secondly, the continuous Co layer is locally etched (all the way through to the glass substrate) t...

Using of nanocomposite membranes composed of polymer and inorganic nanoparticles is a novel method to enhance gas separation performance. In this study, membranes were fabricated from polyester (PE) containing silica (SiO2) nanoparticles and gas permeation properties of the resulting membranes were investigated. Morphology of the membranes, SiO2 distribution a...

2009
Y. Chen

Silver nanoparticle rings embedded in glass are fabricated by ion exchange technique with photolithographically patterned metal mask. Optical transmission measurement is performed to characterize the optical properties of silver nanoparticles. Atomic force microscopy (AFM) of an etched sample further shows the pattern of the nanoparticles. Transmission electron microscope (TEM) with X-ray energ...

2010
Zi Ouyang Supriya Pillai Fiona Beck Oliver Kunz Sergey Varlamov Kylie R. Catchpole Patrick Campbell Martin A. Green

Significant photocurrent enhancement has been achieved for evaporated solid-phase-crystallized polycrystalline silicon thin-film solar cells on glass, due to light trapping provided by Ag nanoparticles located on the rear silicon surface of the cells. This configuration takes advantage of the high scattering cross-section and coupling efficiency of rear-located particles formed directly on the ...

2009
Yongxia Zhang Anatoliy Dragan Chris D. Geddes

In this paper, metal-enhanced fluorescence (MEF) from 6-propionyl-2-dimethylaminonaphthalene (Prodan) in different solvents when placed in close proximity to silver island films (SIFs), surface-deposited nanoparticles, is studied. We observe that MEF is wavelength dependent: the enhanced emission of Prodan on SIFs in different solvents changes from 1.5to 3-fold as compared to a glass control sa...

2012
J. M. Florez S. P. Ong M. C. Onbaşli G. F. Dionne P. Vargas M. C. Onbas li G. Ceder C. A. Ross

Related Articles Magnetic properties of CoFe2O4 nanoparticles distributed in a multiferroic BiFeO3 matrix J. Appl. Phys. 111, 124101 (2012) Ferromagnetic GeMn thin film prepared by ion implantation and ion beam induced epitaxial crystallization annealing Appl. Phys. Lett. 100, 242412 (2012) Spin-glass freezing of maghemite nanoparticles prepared by microwave plasma synthesis J. Appl. Phys. 111,...

Journal: :Analytical biochemistry 2007
Evgenia G Matveeva Ignacy Gryczynski Anne Barnett Zoya Leonenko Joseph R Lakowicz Zygmunt Gryczynski

We present fluoroimmunoassays on plain metal-coated surfaces (metal mirrors) enhanced by metal nanoparticles (silver island films [SIFs]). Metal mirrors (aluminum, gold, or silver protected with a thin silica layer) were coated with SIFs, and an immunoassay (model assay for rabbit immunoglobulin G or myoglobin immunoassay) was performed on this surface using fluorescently labeled antibodies. Ou...

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