doped silica
PROPERTIES OF GE-DOPED SILICA PREFORM BY RAMAN SPECTROSCOPY
... In the present work, the structural modifications of Ge-doped silica preforms due to γ-irradiation at room temperature have been investigated using Raman spectroscopy. The MCVD fabricated preforms labelled ...
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UV written devices in rare earth doped silica on silicon grown by FHD
... solution doped, the soot tended to disinte- grate in the solution as the fragile soot matrix is easily ...shows doped silica raw soot as produced by our FHD system while figures ...
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Thermal Stability and Effect of Heat Treatment on Manganese Doped Silica Borotellurite Glass
... methods by mixing specific weights of tellurium oxide (Alfa Aesar, 99.99%), bo- ron oxide (Alfa Aesar, 98.5%), rice husk ash as silica source (98.85%) and man- ganese (IV) oxide (Alfa Aesar, 99.99%). The x in the ...
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Provitamin D Doped Silica and Polymeric Films: New Materials for UV Biosensor
... The challenge was in finding the preparation regime of mechanically stable UV transparent homogeneous porous silica films (glasses) with sufficient content of 7-DHC entrapped within a silica matrix. First ...
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Synthesis and Characterizations of Europium doped Silica Nanophosphor Rachna Ahlawat
... From literature study, it is also known that the rare-earth sesquioxide exist in three different structure types depending upon the ionic radii of the rare earth. The intermediate groups form a monoclinic structure ...
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SP E C T RO SC OP YOF T H UL I UM D OP E DSI L I CAG L A SS
... standard silica glass fibres; hence fibre coupling connectors are required at each input and ...standard silica glass ...-doped silica fibres and in particular focuses on addressing ...
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Luminescence from erbium-doped silicon nanocrystals in silica: Excitation mechanisms
... ⫹ doped silica containing silicon nanoclusters produced by cosputtering, 23 plasma-enhanced chemical va- por deposition 共 PECVD 兲 , 18,21,24 or ion implantation 25–27 ex- hibits a strong coupling between ...
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A comparative study of non covalent encapsulation methods for organic dyes into silica nanoparticles
... the silica network of the so-formed nanoparticles are involved in an efficient ...denser silica matrix can generate rigid assembling molecules within the network, and therefore depending on the rate of ...
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Sol Gel Relative Humidity Sensors: Impact of Electrode Geometry on Performance in Soil Suction Measurements
... This paper describes the experimental procedure followed to fabricate and va- lidate sol-gel based RH sensors which will be incorporated in soil specimens for standard laboratorial tests. It is the first time such ...
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H2 induced copper and silver nanoparticle precipitation inside sol gel silica optical fiber preforms
... ing doped xerogels were then densified under air atmos- phere at 1,200°C to obtain transparent and cylindrical doped silica glasses (Figure ...
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One Pot Synthesis Of Silver Loaded Mesoporous Silica For Humidity Sensing Applications
... silver doped mesoporous silica nanocomposites with silver nanoparticles loaded in channels and even implanted in frameworks of mesoporous silica have been successful ...Mesoporous silica is ...
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Photonic waveguide engineering using pulsed lasers – A novel approach for non-clean room fabrication!
... of silica was also considered for minimizing the overall residual stress, which can be established from the data summarized in Table 1 below using the equation ...
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Carbon Nanotube Doped with Gaseous-phase Silica/Sulfur Composite as a Cathode Material for High-performance Lithium–Sulfur Batteries
... chemical oxidative method and obtained a specific capacity of approximately 696 mAh g −1 after 30 cycles at 0.1 C. Nevertheless, both methods are complex, and their electrochemical performance is not ideal. In our ...
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A Facile Synthesis and Photoluminescence Properties of SiO2:Tb3+ Spherical Nanoparticles
... other peaks, which was a hypersensitive forced electric dipole transition. It was known that the f-f transition arising from a forced electric dipole was forbidden and became partially allowed when the rare-earth ion was ...
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A disposable biosensor based on immobilization of laccase with silica spheres on the MWCNTs-doped screen-printed electrode
... Multi-walled carbon nanotubes (MWCNTs), with high surface area and excellent biocompatibility, are also a promising candidate as the matrix material to in- corporate enzyme and construct enzyme-based biosen- sors ...
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Original Article Gadopentetic acid-doped, multifunctional, potentially targeted mesoporous silica nanoparticles as a novel MRI nano-contrast agent: synthesis, characterization and MRI study
... mesoporous silica shell with a poly (ethylene glycol) coating; these NPs can be used as MRI and fluores- cence imaging agents and as drug delivery vehicles ...rous silica-coated hollow Mn oxide NPs as posi- ...
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Silica-titania xerogel doped with Mo,P-heteropoly compounds for solid phase spectrophotometric determination of ascorbic acid in fruit juices, pharmaceuticals, and synthetic urine
... reagents. Silica xerogels doped with various HPC have been synthesized earlier and applied as sensor [17] or catalytic materials [19, ...the silica xerogel have retained their redox properties and ...
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Structure and Luminescence Properties of Eu3+ Doped Cubic Mesoporous Silica Thin Films
... mesoporous silica thin films with an Eu/Si molar ratio of ...ions- doped mesoporous silica thin films have an ordered mes- oporous structure ...
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Growth and characterization of calcium doped barium tartrate crystal from silica gel
... In recent years crystals growth in gel medium has attracted the attention of many investigators (Henisch et al., 1965; Henisch, 1970; Dharma Prakash and Mohan Rao Bull, 1986; Shedam and Venkateswara Rao Bull, 1993 and ...
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Synthesis, Growth and Characterization of Sodium Mixed Cadmium Oxalate Crystals
... grown by the single-diffusion reaction method in the silica gel medium at 28˚C temperature. The crystalline nature of crystals was determined in 20 days by 1) varying the concentrations of the feed solutions and ...
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