搜索结果: 1-15 共查到“光学工程 Sol-Gel”相关记录16条 . 查询时间(0.084 秒)
Optical humidity sensing behaviour of sol–gel processed nanostructured ZnO films
humidity sensors optical fiber
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2011/5/10
This paper reports the humidity sensing behaviour of sol–gel processed ZnO films deposited on U-shaped borosilicate rods as substitute of optical fiber having the same radius of curvature. The films p...
Red-emitting LiEuW2O8 phosphor for white emitting diodes prepared by sol–gel process
phosphors sol–gel near-UV
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2011/5/10
Scheelite-type LiEuW2O8 (LEW) phosphors with the optical function of color conversion from near-UV to red were prepared by sol–gel method using a lithium acetate dehydrate, europium(III) nitrate pent...
Silica-based versus silica-titania sol–gel materials – comparison of the physical properties: surface tension, gelation time, refractive index and optical transmittance
silica-titania sol–gel materials surface tension
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2011/5/6
Knowledge of the physical parameters and optical constants of sols and sol–gel materials is important in view of their possible applications. In this work, silica and silica-titania sols were examined...
Sodium diffusion barrier coatings prepared by sol–gel method
sol–gel barrier coatings
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2011/5/5
In the case of electrically conducting layers prepared on a glass substrate, sodium diffuses into the SnO2 film and deteriorates their electric properties. Sodium barrier diffusion properties of thin ...
AFM examination of sol–gel matrices doped with photosensitizers
atomic force microscope (AFM) sol–gel material nanostructure
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2011/5/5
Various compounds may be entrapped into the sol–gel materials, including the photosensitive agents. The nanostructure of the final material depends on the matrix itself, as well as on the structural p...
Formation and structural characterization of silver nanoparticles in ormosil sol–gel films
silver nanoparticles ormosil sol–gel composite
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2011/5/5
Silver nanoparticles were obtained in situ in ormosil sol–gel films with attached urethane groups. Optical spectra of the silver nanoparticles in the films show red shift of absorption maximum with in...
Fluorescence properties of sol–gel materials doped with photosensitizers
fluorescence sol–gel material
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2011/5/5
Sol–gel materials may found plenty of applications, e.g., as carriers for various substances, which can be exploited for sensing purposes or as drug releasing carriers. In this work, the fluorescence ...
Influence of aging and annealing on the properties of silica films produced with sol-gel method
sol-gel silica film
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2011/5/3
The paper presents the results of investigations involving the influence of aging and annealing of the sol films on the final parameters of the obtained silica films. Both technological process and me...
Influence of heating temperature on structural properties of sol-gel materials
sol-gel scanning electron microscopy (SEM) repeatability Fisher linear discriminant analysis
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2011/4/28
In this paper, the influence of heating temperature on the properties of sol-gel materials was investigated . The aim of the study was to examine the production repeatability. All samples were made wi...
Sol-gel coatings for electrical gas sensors
gas sensor sensor sol-gel layer sol-gel technology
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2011/4/28
The influence of volatile organic compound vapours of TiO2 gas-sensing layers prepared via the sol-gel technique was investigated. The sol-gel-derived layers were tested in the environment of alcohols...
Viscosity, surface tension and refractive index of tetraethylorthosilicate-based sol-gel materials depending on ethanol content
sol-gel coating sol viscosity surface tension refractive index
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2011/4/27
The sol-gel-derived materials can be exploited for the number of applications, including biomaterials and measuring techniques. One of the most important applications involves production of sol-gel co...
Porosity of sol-gel silica glasses doped by ruthenium bipyridyl as measured by positron annihilation lifetime spectroscopy and nitrogen adsorption
porous glasses ruthenium tris bipyridyl chloride pore size liquid nitrogen adsorption method
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2011/4/27
The porous structure of glasses incorporated by ruthenium tris bipyridyl chloride (further Rubpy) and adsorbed by Rubpy is studied by positron annihilation lifetime spectroscopy and liquid nitrogen ad...
Transparent (1–x)TiO2–xFe2O3 (x = 0, 5, 10, 15 and 20 mol%) thin films prepared by sol-gel process
titanium oxide thin film iron
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2011/4/26
Transparent iron-doped titanium oxide thin films were prepared on soda-lime-silica glass substrate from a titanium naphthenate precursor. Films prefired at 500°C for 10 min were finally annealed at 50...
Influence of technological parameters on the properties of sol-gel silica films
sol-gel silica film dip coating
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2011/4/26
The paper presents the influence of selected technological parameters on the properties of silica films produced in sol-gel processes using the dip-coating method. The influence of water content and c...
Bragg’s grating coupler in planar optical sol-gel waveguides
integrated optics planar waveguides grating coupler sol-gel method
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2011/4/26
The aim of our investigation was to develop a technique of producing Bragg’s grating couplers on planar waveguides obtained by means of the sol-gel technique. Introducting a light beam into the wavegu...