Relevant bibliographies by topics / Bismuth silicate

Academic literature on the topic 'Bismuth silicate'

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Published: 1 April 2023

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Journal articles on the topic "Bismuth silicate"

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Makarevich, K. S., O. I. Kaminsky, A. V. Zaitsev, E. A. Kirichenko, and V. O. Krutikova. "Creation and research of new bioindifferent photocatalysts that use the energy of solar radiation to purify wastewater from pollutants." IOP Conference Series: Earth and Environmental Science 895, no. 1 (November 1, 2021): 012024. http://dx.doi.org/10.1088/1755-1315/895/1/012024.

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Abstract This work is devoted to the study of new bioindifferent photocatalysts that use the energy of solar radiation to purify water from organic pollutants. Photocatalytic materials were obtained by a previously developed low-temperature pyrolytic synthesis. Varying the bismuth content in the percursor mixture within 15-30 %, allows controlling the phase formation of the bismuth and strontium silicate phases. The samples obtained at 25 % bismuth in the precursor mixture (in terms of Bi2O3 %, wt.) show the highest photocatalytic activity with Bi12SiO2, Bi4Si3O12 formed in the catalyst composition. Photocatalytic activity of coatings with the predominance of bismuth silicates is inferior to coatings with the predominance of strontium bismuthates, but their greater hydrolytic stability is observed.
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Bautista-Ruiz, J., A. Chaparro, and W. Bautista. "Characterization of bismuth-silicate soles." Journal of Physics: Conference Series 1386 (November 2019): 012020. http://dx.doi.org/10.1088/1742-6596/1386/1/012020.

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Аванесян, В. Т., И. В. Писковатскова, and В. М. Стожаров. "Влияние рентгеновского излучения на оптические свойства фоторефрактивных кристаллов силиката висмута." Физика и техника полупроводников 53, no. 8 (2019): 1043. http://dx.doi.org/10.21883/ftp.2019.08.47992.9115.

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AbstractThe results of investigations of the optical-absorption spectra of bismuth-silicate (Bi_12SiO_20) single crystals are presented. The band-gap width and the characteristic Urbach energy are determined. The effect of preliminary X -ray irradiation on the behavior of the experimental spectral dependences and the values of the characteristic parameters induced by the bismuth-silicate defect structure is established.
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Xin Wang, Xin Wang, Lili Hu Lili Hu, Kefeng Li Kefeng Li, Ying Tian Ying Tian, and Sijun Fan Sijun Fan. "Spectroscopic properties of thulium ions in bismuth silicate glass." Chinese Optics Letters 10, no. 10 (2012): 101601–5. http://dx.doi.org/10.3788/col201210.101601.

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Prochnow, Eberhard, David F. Edwards, R. P. Shukla, J. Choi, and M. D. Aggarwal. "The Precision Polishing of Bismuth Silicate and Bismuth Germanate." Applied Optics 33, no. 34 (December 1, 1994): 8101. http://dx.doi.org/10.1364/ao.33.008101.

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Kusz, B. "Ionic conductivity of bismuth silicate and bismuth germanate glasses." Solid State Ionics 159, no. 3-4 (April 2003): 293–99. http://dx.doi.org/10.1016/s0167-2738(02)00911-6.

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Kusz, B., and K. Trzebiatowski. "Bismuth germanate and bismuth silicate glasses in cryogenic detectors." Journal of Non-Crystalline Solids 319, no. 3 (May 2003): 257–62. http://dx.doi.org/10.1016/s0022-3093(02)01969-5.

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Klebanskii, E. O., A. Yu Kudzin, V. M. Pasal’skii, S. N. Plyaka, L. Ya Sadovskaya, and G. Kh Sokolyanskii. "Thin sol-gel bismuth silicate films." Physics of the Solid State 41, no. 6 (June 1999): 913–15. http://dx.doi.org/10.1134/1.1130903.

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Larkin, John, Meckie Harris, J. Emery Cormier, and Alton Armington. "Hydrothermal growth of bismuth silicate (BSO)." Journal of Crystal Growth 128, no. 1-4 (March 1993): 871–75. http://dx.doi.org/10.1016/s0022-0248(07)80061-3.

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Kobayashi, Masaaki, Mitsuru Ishii, Kenji Harada, and Isao Yamaga. "Bismuth silicate Bi4Si3O12, a faster scintillator than bismuth germanate Bi4Ge3O12." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 372, no. 1-2 (March 1996): 45–50. http://dx.doi.org/10.1016/0168-9002(95)01279-6.

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Dissertations / Theses on the topic "Bismuth silicate"

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Wiegel, Michaela E. K. (Michaela Emilie Kurt) 1973. "Gravitational effects on defect formation in melt grown photorefractive materials : bismuth silicate." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29626.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2003.
Includes bibliographical references (leaves 206-213).
Photorefractivity is the modulation of index of refraction due to nonuniform illumination, and numerous applications have been demonstrated utilizing this nonlinear optical property. However, commercial production is seriously impeded by the inability to produce bulk material with the homogeneity of opto-electronic properties that is required for device applications. Bismuth Silicate, Bi12SiO20, (BSO) is a photorefractive material with outstanding properties including a fast response time and high sensitivity is studied. Its photorefractivity is due to a native defect whose exact nature and origin have not been unambiguously determined. Motivation for current research arose from unexplained optical variations observed in BSO that implicate convective interference as playing a role in native defect formation. Microgravity growth experiments are proposed in order to establish a controlled, convection-free environment to study the origin and nature of the critical native defect. This work aims at resolving critical aspects of performing quantitative microgravity growth experiments that include the interaction of BSO melts with its confinement material; development and characterization of a vertical Bridgman-Stockbarger growth system with a quantifiable, reproducible, and controllable thermal environment; and Bridgman-Stockbarger growth experiments. A comparative analysis of crystals was done in order to establish the relationship between variations in opto-electronic properties as a function of changes in growth conditions. Wetting experiments revealed the sessile drop method to be inappropriate for the BSO-platinum system due to grain boundary pinning. No fundamental difference between the wetting behavior in a terrestrial and a low gravity environment was observed.
(cont.) Results from the comparative analysis indicate a lower defect concentration in Bridgman-Stockbarger material as compared to Czochralski material. The ambient atmosphere during processing and high temperature annealing was found affect material response, including removal of the photochromic response and decrease of carrier lifetime. The lack of the critical defect in hydrothermal BSO, and its existence in all melt grown material indicates that the melt plays a fundamental role in its formation. Clustering in the melt is implicated in the literature from nonlinear melt properties. It is therefore hypothesized that these clusters in the melt act as precursors for native defect formation and subject to gravitationally induced convection. The support of the National Aeronautics and Space Administration is gratefully acknowledged.
by Michaela E.K. Wiegel.
Ph.D.
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Laguta, Oleksii. "Magneto-optical investigations of Bismuth-doped silica glasses." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10082/document.

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Les verres de silice dopés par le Bismuth sont très prometteurs en raison de leurs applications potentielles en termes de lasers à fibres et d’amplificateurs optiques large bande destinés aux télécommunications optiques. Toutefois, la nature des centres optiquement actifs dans de tels verres demeure un sujet d’intenses débats. Les méthodes spectroscopiques magnéto-optiques sont des outils puissants pour l’étude des centres paramagnétiques au sein de la matière condensée. Dans ce travail de thèse, les techniques de dichroïsme circulaire magnétique, de polarisation circulaire magnétique de l'émission et de résonance magnétique détectée optiquement ont été mises en œuvre pour étudier les verres dopés par le Bismuth. En association avec les méthodes spectroscopiques conventionnelles, nous avons montré la coexistence d’au moins deux types de centres optiquement actifs dans des verres de silice dopés par le Bismuth sans autres co-dopants et de trois types dans un verre aluminosilicate dopé par la Bismuth. L’analyse des données expérimentales a révélé que tous les centres proviennent de systèmes ayant un nombre pair d’électrons (ou de trous). Deux centres ont été identifiés aux ions Bi+ et aux défauts du réseau vitreux qui interagissent via des processus de transfert d’énergie. Le troisième centre est attribué aux clusters d’ions Bismuth et a été observé seulement dans des verres aluminosilicates fortement dopés. Pour la première fois, nous avons montré expérimentalement que l’effet laser dans le proche infrarouge est due à une transition interdite à partir du premier état excité d’un défaut du réseau vitreux
Bismuth-doped silica glasses are interesting due to the promising applications in fiber lasers and amplifiers for the communication purposes. Unfortunately, the nature of the optical active centre(s) in such glasses is still a subject of intense debuts.Magneto-optical methods of spectroscopy are very powerful tools for the investigation of paramagnetic centres in condensed matters. In this thesis, the magnetic circular dichroism, magnetic circular polarization of luminescence and optically detected magnetic resonance techniques were implemented to investigate Bi-doped silica glasses. Together with the methods of the conventional optical spectroscopy, we demonstrate the coexistence of at least two types of optical centres in a Bi-doped silica glass without other co-dopants and three types in a Bi-doped aluminosilicate glass. The analysis of experimental data revealed that all centres originate from systems with an even number of electrons (or holes). Two centres were identified as Bi+ ion and some defect in the glass network that interact via the energy transfer processes. The third centre is assigned to the clusters of Bi ions and it was observed only in the highly doped aluminosilicate sample. For the first time, we showed experimentally that the lasing related near-infrared luminescence is caused by a forbidden transition from the first excited state of the defect centre
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Brochin, Frédéric. "Nanocomposites bismuth-silice : élaboration, caractérisation microstructurale et propriétés de transport." Vandoeuvre-les-Nancy, INPL, 2000. http://www.theses.fr/2000INPL015N.

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Ce travail porte sur l'influence de nanoinclusions de silice sur les propriétés de transport du bismuth. Une technique de métallurgie de poudre est employée pour la production de poudres nanocomposites Bi-Si02. Des poudres Bi-y % vol. Si02 (0 [inférieur ou égal à] y [inférieur ou égal à] 15) sont élaborées par coévaporation de bismuth et de silice dans un four à arc. Une étude de la microstructure des poudres nanocomposites indique que les grains de bismuth sont systématiquement enrobés d'une couche de silice de quelques nanomètres d'épaisseur. Un mécanisme de formation des poudres à partir de bismuth, d'oxydes de bismuth et de silicium est proposé. Dans les matériaux massifs, la taille de grains est plus faible pour les nanocomposites que pour le bismuth car la silice empêche la diffusion lors du frittage. La résistivité électrique, le pouvoir thermoélectrique et la conductivité thermique de bismuth polycristallin et de nanocomposites sont mesurées entre 65 K et 300 K. La résistivité électrique est gouvernée par une compétition entre la concentration des porteurs et leur mobilité qui résulte soit en un comportement métallique, soit en un comportement semi-conducteur. La concentration de porteurs ainsi que la mobilité sont extraites à partir de mesures de 5 à 300 K du coefficient de Hall et de la magnétorésistance pour des champs allant de 0 à 7 T. Un comportement extrinsèque du bismuth et des nanocomposites est mis en évidence à basse température (T < 50 K). Il est expliqué par la présence d'états d'énergie additionnels dus aux joints de grains. Le pouvoir thermoélectrique des nanocomposites est plus élevé que celui du bismuth, l'explication se trouvant dans la présence de barrières de potentiel induites par la microstructure. La conductivité thermique des nanocomposites est fortement réduite par rapport à celle du bismuth, et elle est insensible à la fraction volumique de silice en raison d'un effet prédominant de la taille de grain sur la diffusion des phonons.
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Zhao, Yixuan. "Nanocomposites de silices micro et méso poreuses/nanofils de Bi élaborés sous haute pression." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTS082.

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Le bismuth présente des propriétés thermoélectriques modérées sous forme massive. La réduction de sa dimensionnalité (les nanofils de Bi) permet d’améliorer sa propriété thermoélectrique, c’est-à-dire l’amélioration du coefficient de Seebeck S, la diminution de la résistivité électrique et de la conductivité thermique. Ces nanofils permettraient une utilisation pour la réfrigération Peltier. Les silices micro- et méso-poreuses possèdent des canaux qui permet de confiner les atomes de Bi et donc d’y intercaler des fils de Bi de diamètre de l’ordre nanométrique. Le Bi fusionné à haute pression a été compressé sous haute pression afin de l’insérer dans ces pores. La haute pression et la haute température sont obtenues par la cellule à enclume de diamant et la presse gros volume nommée CONAC28. La dynamique des réseaux et la stabilité des différentes phases de Bi ont été tout d’abord étudiées. Les résultats expérimentaux sont cohérents avec ceux calculé et le spectre de Bi III a été observé pour la première fois. Les échantillons composites Bi/silice micro- ou meso-poreuse élaborés ont été caractérisés par DRX, Raman, MEB, TEM, et DNP. Certaines techniques de caractérisation étaient efficaces pour confirmer l’intercalation du Bi dans les pores. Dans le cas de Bi/MFI, les chaines de Bi ont été observées avec le MET et présentent un diamètre de 6Å. Le nombre moyen de Bi par maille (14 Bi) a été déterminé par l’affinement Rietveld en utilisant le modèle calculé (24 Bi/maille). Des calculs DFT ont été réalisés pour les nanocomposites Bi/MFI afin de prévoir ses propriétés physiques. Ceux-ci montrent les composites avec 14 Bi/ maille présenterais une énergie de bande interdite entre 0,4eV et 1,69eV. Dans le cas de Bi/nanotubes de silice, seule la MET a permis la mise en évidence des nanotubes remplis avec Bi de diamètre de 4nm élaboré en CED ou des bâtonnets de Bi de diamètre autour de 10nm élaboré dans la CONAC28. En plus, les nanotubes dans le composite Bi/nanotube se sont cristallisés en quartz. Les mesures physiques ont été ensuite réalisées pour déterminer si les propriétés thermoélectriques sont améliorées. Avec la méthode de Van der Pauw, on a observé l’augmentation de la résistivité électrique des composites (10 fois et 3,3 fois élevés que celle de Bi massif). Par contre, le coefficient de Seebeck mesurée avec la méthode de pointe chaud présente un même ordre de grandeur pour Bi massif et les composites. Par conséquent, les mesures sur les nanofils de Bi isolés seront nécessaires
Bulk bismuth has moderate thermoelectric properties. The reduction of its dimensionality (for example Bi nanowires) can improve its thermoelectric properties, in other words, this reduction can improve the Seebeck coefficient, and decrease the electrical resistivity and thermal conductivity. These nanowires could be used for Peltier refrigeration. Micro- and mesoporous silica? have channels that allow to confine Bi atoms and thus to create nano-sized Bi wires inside. Molten Bi at high pressure was compressed under high pressure in order to insert it into the pores. High pressure and high temperature are generated by a diamond anvil cell (DAC) and a CONAC28 large volume press. The lattice dynamics and the stability of the different phases of Bi were first studied. The experimental results are consistent with those calculated and the Raman spectrum of Bi III was observed for the first time. The Bi/silica micro- and meso-porous composite samples were characterized by XRD, Raman, SEM, TEM, and NPD. Some characterization techniques were suitable to confirm the synthesis. In the case of Bi/MFI, Bi chains of 6Å were observed with TEM. The average number of Bi atoms per cell (14 Bi) was determined by the Rietveld refinement using the calculated model (24 Bi/cell). DFT calculations have been performed for Bi/MFI nanocomposites to predict their physical properties. They show that the composites with 14 Bi would have a gap energy between 0.4eV and 1.69eV. In the case of Bi/nanotubes, only TEM could be used to characterize the nanotubes filled with 4nm diameter Bi nanowires prepared in the DAC or Bi rods of diameter around 10nm produced in CONAC28. In addition, the nanotubes in the Bi/nanotube composite transformed into crystalline quartz. Physical measurements were also performed in order to check if the thermoelectric properties are improved. Using the Van der Pauw method, an increase of electrical resistivity was observed (10 times and 3.3 times higher than in bulk Bi). However, the Seebeck coefficient measured has the same order of magnitude for both bulk Bi and the composites. Therefore, the measurements of isolated Bi nanowires will be necessary
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Kalita, Mridu P. "Development of bismuth doped silica fibres for high power sources & long wavelength generation from ytterbium doped fibre lasers." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/185965/.

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A detailed study of fabrication and characterisation of bismuth (Bi) doped silica optical fibre has been investigated. Three different fibre fabrication techniques were applied to study the possible influence on Bi-luminescence: modified chemical vapour deposition (MCVD) and the solution doping technique, MCVD chemicalin- crucible deposition technique and the powder-in-tube (PIT) technique. Spectroscopic absorption and Bi luminescence and fluorescence decay properties under different pumping wavelengths and with different host glass compositions are presented and provide important information for device applications. The influence of unsaturable loss on laser performance is investigated. The feasibility of direct laser diode pumping of Bi-doped fibre lasers at the wavelengths of 915 and 975 nm was examined by measuring excited state absorption in Bi-doped silicate fibres for the wavelength range of 900 -1300 nm. Enhancement in spectroscopic properties of Bi-doped fibre, by H2-loading, has been examined. Bi-doped fibre laser operating in the wavelength region of 1160-1179 nm has been demonstrated. The fibre laser performance at 1179 nm was investigated incorporating different cooling arrangements. The operation of Bi-doped fibre amplifier at 1179 nm, in both low and high input signal regime, was also examined. An all-fibre, narrow-linewidth, high power Yb-doped silica fibre laser at 1179 nm has been demonstrated. Furthermore, theoretical work confirms that the proposed laser architecture can be easily scaled to higher power
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Nguyen, Lucie. "Approche du frittage et du co-frittage de matériaux céramiques et métalliques pour l'élaboration par le procédé d'impression jet d'encre de composants magnétiques." Limoges, 2013. http://www.theses.fr/2013LIMO4005.

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Ce travail est consacré à l’étude du frittage de matériaux céramiques et métalliques en vue de leur co-frittage pour l’élaboration d’un composant magnétique mis en forme par un procédé d’impression jet d’encre. L’étude et la compréhension du frittage du matériau isolant (à base de silice) avec ou sans additifs de type TiO2, Bi2O3, ZnO se sont appuyées sur l’identification in situ par MEBE et DRX des transformations de phases et des mécanismes de densification intervenant au cours du traitement thermique. Il a été notamment montré que ces additifs pouvaient jouer le rôle soit de modificateur soit de formateur du réseau de la silice vitreuse et conduire ainsi à de fortes variations de la température de cristallisation et de densification. Les cinétiques de densification et l’amplitude des retraits des matériaux isolant, conducteur et magnétique étant très différentes, plusieurs voies d’amélioration ont été préconisées en vue de leur cofrittage : dopage du matériau conducteur, température de calcination du matériau magnétique. . . . Ces choix ont permis, à terme, la réalisation de composants bimatériaux mis en forme par impression jet d’encre aux designs proches de celui du composant final
This work deals with the study of the sintering of ceramic and metallic materials to allow their co-sintering for the development of a magnetic component shaped by ink-jet printing. The study and understanding of the sintering of the dielectric material (composed of silica) with or without additives such as TiO2, Bi2O3, ZnO relied on the in situ characterizations by ESEM and XRD of the phase transformations, the mechanisms of densification occurring during the heat treatment. It has been shown that these additives could act either as former or modifier of the vitreous silica network and lead to large variations in the crystallization température and densification. The densification kinetics and shrinkage amplitude of the dielectric, conductive and magnetic materials are very different, several improvement possibilities were advocated for their co-sintering: doping of the conductive material, calcination température of the magnetic material. . . . These solutions allowed the élaboration of bimaterial components shaped by ink-jet printing with designs close to the one of the final component
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MALKA, KAREN. "Reactivite du pentachlorure de molybdene sur des oxydes de vanadium, niobium et bismuth supportes sur silice : preparation de catalyseurs mixtes. comportement oscillant de la reaction d'oxydation menagee du methanol sur ces catalyseurs." Paris 6, 1995. http://www.theses.fr/1995PA066153.

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L'etude de la reactivite du pentachlorure de molybdene en phase gazeuse a 30c sur des oxydes de vanadium, de niobium ou de bismuth supportes sur silice se situe dans le cadre plus general de la preparation de catalyseurs a base d'oxydes mixtes supportes sur silice. Une interaction preferentielle entre le molybdene et l'oxyde supporte plutot qu'avec la silice, a ete observee. Une phase mixte se forme avec l'oxyde de vanadium (oxychlorure de vanadium et de molybdene) et avec l'oxyde de bismuth (molybdate de bismuth) alors qu'avec l'oxyde de niobium, seule une interaction de surface est presente. Ces interactions s'accompagnent du transfert de l'electron du molybdene (au degre d'oxydation +5) vers le vanadium (+5) et de l'absence de transfert mais avec delocalisation de l'electron du molybdene sur le niobium (+5), en accord avec les reactions d'oxydo-reduction deduites des inegalites des potentiels redox standards des couples en solution. En revanche, la formation du molybdate de bismuth (+3) suppose l'oxydation du molybdene au degre d'oxydation (+5) en (+6), ce qui est en desaccord avec la reaction d'oxydo-reduction deduite de l'inegalite des potentiels redox des couples (bi3+/bi et mo#6#+/mo#5#+). Le protocole de preparation (impregnation puis greffage, impregnation en deux etapes, coimpregnation) des catalyseurs a base d'oxydes de vanadium et de molybdene a une influence sur la nature des especes de la phase supportee sur la silice et sur la proportion d'ions vanadium et molybdene de surface. Cette proportion a pu etre correlee a celle des differents centres acido-basiques caracterises par la reaction test d'oxydation menagee du methanol. Les catalyseurs a base d'oxydes simples ou mixtes (v, mo, v-mo, bi-mo, ca-mo) supportes sur silice presentent pour cette reaction un comportement inhabituel caracterise par des oscillations temporelles de l'activite catalytique
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Le, Rouge Antoine. "Nouveaux matériaux vitreux dopés par des ions ou des nanoparticules métalliques et destinés à la réalisation de fibres optiques." Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10143/document.

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Ce travail de thèse porte sur l'étude de nouveaux matériaux vitreux, dopés par des ions bismuth ou des nanoparticules d’or, à destination de l’optique guidée. L’efficacité optique dans l’infrarouge des composants réalisés avec des verres dopés bismuth sont limitées par la méconnaissance du centre émetteur. Nous étudions ici les propriétés de luminescence d’un système plus simple : la silice pure. L’évolution des propriétés spectroscopiques, avec la température, d’une fibre optique micro-structurée à cœur de silice dopée bismuth est étudiée. Nous en déduisons les énergies de vibration du centre émetteur. L’influence de l’atmosphère de fabrication de préformes sur leurs propriétés spectroscopiques a ensuite été établie. Un procédé de fabrication de préformes par déposition chimique en phase vapeur (MCVD) est utilisé pour synthétiser des préformes sous atmosphères contrôlées. Les propriétés optiques de ces préformes et fibres optiques conventionnelles sont présentées. Ces résultats corroborent la présence dans la silice d’un centre émetteur dans l’infrarouge lié à une entité réduite du bismuth. Nous étudions alors les propriétés optiques linéaires et non-linéaires de verres massifs et de fibres optiques dopés par des nanoparticules d’or. Leur résonance plasmonique de surface est mise à profit pour fabriquer un verre dont le coefficient non-linéaire est supérieur à celui de la silice. Des monolithes de silice Sol-Gel dopée et densifiée à des températures basses sont utilisés pour la réalisation de fibres optiques micro-structurées. Nous observons un comportement d’absorbant saturable pour le verre massif alors que la fibre optique présente un comportement de limitation optique
This thesis concerns the properties of two chemical elements which are bismuth ion and gold nanoparticles, for silica doped optical fiber. Efficiency device set up with bismuth doped silica fibers are limited by the misunderstanding of the infrared luminescent center. To this aim, we decided to use the stack and draw process to realize a microstructured optical fiber with a silica core doped only with bismuth. Evolution of spectroscopic properties of the optical fiber versus temperature is reported. We employed a model to deduce vibrational energies of the luminescent center. In a second time, we studied influence of the manufacturing atmosphere of Bismuth doped optical preforms on their spectroscopic properties. A chemical vapor deposition is use with more or less atmosphere during collapse step. Spectroscopic properties of bismuth doped silica preform are presented and discussed. All these results seem to confirm the presence in bismuth doped silica glass of a low valence state or a reduce species of the bismuth element. The second study concerns the linear and nonlinear properties of gold nanoparticles doped bulk glasses and optical fibers. In this work, we propose to start from monolithic silica xerogel with controlled porosity. It is then possible to obtain gold nanoparticles-doped glasses that can be used for the realization of micro-structured fibers using the Stack and Draw technique. Linear and nonlinear properties of bulk glass and optical fibers are studied. We will also present the properties the bulk glass that behaves like a saturable absorber and the optical fiber which presents optical limitation
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Wang, Teng-Yu, and 玉珽玉. "Crystal Growth of Bismuth Silicate by Floating-Zone Method." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/23131285350122970829.

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碩士
國立臺灣大學
化學工程學研究所
88
Manufacture of Non-linear optical(NLO) single crystal is the fundamental technology of optical process unit. NLO single crystal can apply to optical information processing, calculation and image stockpile. It come to important recently. We made up bismuth silicate(BSO) crystal by Floating-Zone method. BSO can apply to real-time optical information processing, optical computing, incoherent-to-coherent optical image conversion, real-time interferometry, image amplification and phase conjugation because of it’s sensitive properties. It also can apply to optical electric sensor or optical magnetic field sensor. We attempted to make up the most suitable feeding rod for floating-zone crystal growth by using different sintering method. We also discussed the cause which influence the stability of melting zone. And then we solved the unstable of melting zone. Beside we discussed the influence of crystal quality by using different crystal growth rate, crystal diameter, seed and temperature.
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Yang, Chin-Tsung, and 楊謹聰. "The photocatalysts of Bismuth silicate and bismuth silicate/graphitic carbon nitride composites: Synthesis, characterization, activity, and their photocatalytic degradation of the organic pollutants." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/15967987415189424961.

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碩士
國立臺中教育大學
科學教育與應用學系碩士班
104
In this study, a series of the bismuth silicate and bismuth silicate composite graphitic carbon nitride (g-C3N4) are prepared using autoclave hydrothermal methods. The novel heterojunctions of BixSiOy/g-C3N4 is fabricated by the hydrothermal method for the first time, in which g-C3N4 is synthesized by calcinations at 540℃ in muffle furnace. Bismuth silicate is prepared by Bi(NO3)3 and Na2SiO3, dissolved in an 1M HNO3 aqueous solution and adjusted the pH value, and then the aqueous solution is transferred into a 15 mL Teflon-lined autoclave and is heated to 150 oC for 8 hours. Finally, the BixSiOy and g-C3N4 are mixed in different ratio in a autoclave and is heated to 150oC for 4 hours. The products are characterized by XRD, SEM-EDS, FE-TEM, HR-XPS, PL, DR-UV, BET, FT-IR, and EPR. inorder to discuss the photocatalytic efficiency of bismuth silicate and bismuth silicate composite g-C3N4. Photocatalytic efficiency of the catalyst is use of photocatalytic degrading of organic pollutants - crystal violet (CV) by measuring crystal violet (CV) concentration.
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Books on the topic "Bismuth silicate"

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National Aeronautics and Space Administration (NASA) Staff. Identification and Control of Gravity Related Defect Formation During Melt Growth of Electro-Optic Single Crystals Bismuth Silicate(bi12sio20). Independently Published, 2018.

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Book chapters on the topic "Bismuth silicate"

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Pavlenko, A., and R. Yastrebinskiy. "Topochemical Transformations in Sodium-Bismuth-Silicate System at 100–900 ℃." In Springer Proceedings in Earth and Environmental Sciences, 123–26. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22974-0_28.

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Rojo, J. C., and E. Diéguez. "Bismuth Germanate, Titanate, and Silicate." In Encyclopedia of Materials: Science and Technology, 637–43. Elsevier, 2001. http://dx.doi.org/10.1016/b0-08-043152-6/00121-2.

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M. Dakhil Alsingery, Rifat, and Ahmed Mudhafer. "Development of Bismuth-Doped Fibers (BDFs) in Optical Communication Systems." In Bismuth - Fundamentals and Optoelectronic Applications. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.93857.

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This chapter will provide background information in the development of BDFs and their applications in optical communication systems. Herein, the main focus is briefly described previous studies on BDFs that have attracted much interest over the last two decades. This necessary information and concepts are very much relevant to understanding this book, mainly due to the doping of Bi in the studied bismuth and erbium-doped silicate fibers (BEDFs). The remaining chapter is consisting of the following sections: Sec.2: General introduction about optical fibers. Sec. 3 discusses the general spectral characteristics of BDFs. Sec.4: Including the active centers (namely the bismuth (Bi) active centers (BACs)) responsible for the spectral properties in Bi-doped fibers. Sec.4 Discusses the Bismuth Doped Fiber Amplifier (BDFA).
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"Physical, Optical and Structural Properties of Er3+ Doped Zinc/Cadmium Bismuth Borate/Silicate Glasses." In Current Trends on Glass and Ceramic Materials, edited by Inder Pal, Ashish Agarwal, Sujata Sanghi, and Mahender P. Aggarwal, 142–81. BENTHAM SCIENCE PUBLISHERS, 2013. http://dx.doi.org/10.2174/9781608054527113010010.

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Wen, Jianxiang, Ying Wan, Yanhua Dong, Yi Huang, Yanhua Luo, Gang-Ding Peng, Fufei Pang, and Tingyun Wang. "Radiation Effect on Optical Properties of Bi-Related Materials Co-Doped Silica Optical Fibers." In Bismuth - Fundamentals and Optoelectronic Applications. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.93495.

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Three kinds of Bi-related materials co-doped silica optical fibers (BRDFs), including Bi/Al, Bi/Pb, and Bi/Er co-doped fibers, were fabricated using atomic layer deposition (ALD) and modified chemical vapor deposition (MCVD). Then, the effect of irradiation on the optical properties of BRDFs was investigated. The experimental results showed that the fluorescence intensity, the fluorescence lifetime of BRDFs at the 1150 nm band, increased significantly with low-dose treatment, whereas it decreased with a further increase in the radiation dose. In addition, the merit Mα values of the BRDFs, a ratio of useful pump absorption to total pump absorption, decreased with an increase of the radiation doses. The Verdet constants of different doped fibers increased up to saturation level with increases in the radiation dose. However, for a Bi-doped fiber, its Verdet constant decreased and the direction of Faraday’s rotation changed under low-dose radiation treatment. In addition, the Verdet constant increase of the Bi-doped silica fiber was much faster than that of other single mode fiber (SMF) and Pb-doped silica fibers treated with high-dose radiation. All of these findings are of great significance for the study of the optical properties of BRDFs.
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Seo, Young-Seok, and Yasushi Fujimoto. "Bismuth-doped Silica Fiber Amplifier." In Frontiers in Guided Wave Optics and Optoelectronics. InTech, 2010. http://dx.doi.org/10.5772/39558.

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"Thermoelectric Properties of Bismuth Telluride–Filled Silicone." In Nanomaterials for Thermoelectric Devices, 115–26. Jenny Stanford Publishing, 2018. http://dx.doi.org/10.1201/9780429488726-13.

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Tirions, O., M. Devillers, P. Ruiz, and B. Delmon. "Bismuth(III) and molybdenum(II) acetates as mono- and homopolynuclear precursors of silica-supported bismuth molybdate catalysts." In Studies in Surface Science and Catalysis, 999–1008. Elsevier, 1995. http://dx.doi.org/10.1016/s0167-2991(06)81843-4.

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Cauzzi, D., M. Deltratti, M. Devillers, G. Predieri, O. Tirions, and A. Tiripicchio. "Silica-supported bismuth molybdate catalysts obtained by the sol-gel process via silicon alkoxides." In Preparation of Catalysts VII, Proceedings of the 7th International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts, 699–706. Elsevier, 1998. http://dx.doi.org/10.1016/s0167-2991(98)80237-1.

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Conference papers on the topic "Bismuth silicate"

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Krishnan, M. Laya, and V. V. Ravi Kanth Kumar. "Photoluminescence properties of LiF bismuth silicate glass." In DAE SOLID STATE PHYSICS SYMPOSIUM 2017. Author(s), 2018. http://dx.doi.org/10.1063/1.5028831.

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Krishnan, M. Laya, and V. V. Ravi Kanth Kumar. "Spectroscopic investigations of AgNO3 doped bismuth silicate glasses." In DAE SOLID STATE PHYSICS SYMPOSIUM 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0017514.

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Brambilla, G., F. Koizumi, V. Finazzi, J. Mills, and D. J. Richardson. "Long-wavelength supercontinuum-generation in tapered bismuth silicate fibres." In International Quantum Electronics Conference, 2005. IEEE, 2005. http://dx.doi.org/10.1109/iqec.2005.1561031.

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Bhardwaj, S., R. Shukla, S. Sanghi, A. Agarwal, I. Pal, S. K. Tripathi, Keya Dharamvir, Ranjan Kumar, and G. S. S. Saini. "Optical and structural analysis of lead bismuth silicate glasses." In INTERNATIONAL CONFERENCE ON ADVANCES IN CONDENSED AND NANO MATERIALS (ICACNM-2011). AIP, 2011. http://dx.doi.org/10.1063/1.3653645.

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Haruna, Tetsuya, Junji Iihara, and Masashi Onishi. "Bismuth-doped silicate glass fiber for ultra-broadband amplification media." In Optics East 2006, edited by Achyut K. Dutta, Yasutake Ohishi, Niloy K. Dutta, and Jesper Moerk. SPIE, 2006. http://dx.doi.org/10.1117/12.688684.

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Pal, I., A. Agarwal, S. Sanghi, S. Bhardwaj, and Sanjay. "Intense 1.6 μm fluorescence of Nd3+ doped cadmium bismuth silicate glasses." In SOLID STATE PHYSICS: Proceedings of the 58th DAE Solid State Physics Symposium 2013. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4872723.

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Denker, B. I., B. I. Galagan, S. E. Sverchkov, S. V. Firstov, I. A. Bufetov, S. L. Semenov, V. V. Velmiskin, and E. M. Dianov. "Bismuth-doped Mg-Al-silicate glasses and optical fibers on their base." In Advances in Optical Materials. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/aiom.2012.jth2a.4.

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Krishnan, M. Laya, and V. V. Ravi Kanth Kumar. "Structural and optical studies of bismuth silicate oxyfluoride glasses for LED applications." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS: ICAM 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5130364.

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Ahlawat, Neetu, Sujata Sanghi, Ashish Agarwal, Navneet Ahlawat, Praveen Aghamkar, and Monica. "Investigation Of Dispersive Conductivity And Dielectric Losses In Barium Bismuth Silicate Glasses." In REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: Proceedings of the 35th Annual Review of Progress in Quantitative Nondestructive Evaluation. American Institute of Physics, 2011. http://dx.doi.org/10.1063/1.3653642.

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Ellin, H. C., Anders Grunnet-Jepsen, Laszlo Solymar, and Jeno Takacs. "Effect of piezoelectricity on the photorefractive gain in a bismuth silicate crystal." In Optoelectronic Science and Engineering '94: International Conference, edited by Wang Da-Heng, Anna Consortini, and James B. Breckinridge. SPIE, 1994. http://dx.doi.org/10.1117/12.182140.

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Reports on the topic "Bismuth silicate"

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Benavides-Montes, Victor. Polyethylene Glycol and Silica Coatings of Bismuth Nanoparticles: Synthesis, Characterization and Whole Serum Compatibilities. Portland State University Library, January 2015. http://dx.doi.org/10.15760/honors.162.

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