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Relevant bibliographies by topics / Silica (SiO2)

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Academic literature on the topic 'Silica (SiO2)'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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Journal articles on the topic "Silica (SiO2)"

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Fairus, Sirin, H. Haryono, Mas H. Sugita, and Agus Sudrajat. "Proses pembuatan waterglass dari pasir silika dengan pelebur natrium hidroksida." Jurnal Teknik Kimia Indonesia 8, no. 2 (2018): 56. http://dx.doi.org/10.5614/jtki.2009.8.2.4.

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Waterglass from silica sand production process with buster sodium hydroxideWaterglass may be prepared by the fusion process of silica sand using alkali. Waterglass component, which mainly contains SiO2 and Na2O, have various applications depending on their composition. Waterglass is usually used in the soap and detergent, paper, textile, and ceramic industries, in the cleaning of metals, the manufacture of silica gel, and others. This research was done to study the effect of silica sand particle size and the quantity of NaOH as fluxing agent on the yield and SiO2 content of waterglass produced

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Desfitri, Erda Rahmilaila, Reni Desmiarti, Munas Martynis, and Suci Rahma Dhani. "Analisis dan Karakterisasi Potensi Pozzolan Sebagai Sumber Silika (SiO2) Untuk Meningkatkan Nilai Sumber Daya Lokal." Jurnal Rekayasa Hijau 6, no. 2 (2022): 96–105. http://dx.doi.org/10.26760/jrh.v6i2.96-105.

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ABSTRAKKabupaten Padang Pariaman memiliki sumber daya pozzolan yang belum termanfaatkan secara optimal. Pozzolan adalah bahan yang mengandung senyawa silika dan alumina. Untuk pemanfaatan yang optimal dilakukan analisis dan karakterisasi potensi pozzolan sebagai sumber silika. Silika bisa dimanfaatkan untuk bahan baku utama diberbagai industri, seperti industri gelas, keramik, katalis, pertanian dan untuk pengolahan limbah. Untuk mengetahui potensi pozzolan sebagai sumber silika dilakukan analisis kualitatif dan kuantitaif menggunakan XRD dan XRF. Berdasarkan hasil analisis pola difraksi sinar

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Liang, Yutao, Jinchuan Zhang, Yang Liu, et al. "Evidence for Biogenic Silica Occurrence in the Lower Silurian Longmaxi Shale in Southeastern Chongqing, China." Minerals 10, no. 11 (2020): 945. http://dx.doi.org/10.3390/min10110945.

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The gas shale in the Lower Silurian Longmaxi Formation contains a considerable amount of biogenic silica. Various originated silicas in shale, derived from different depositional environment, are commonly associated with different degrees of organic matter enrichment, resulting in different mechanical and physical properties of shale reservoirs. Thin section identification, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), total organic carbon (TOC) analysis, X-ray diffraction (XRD) analysis, and X-ray fluorescence (XRF) spectroscopy were used to investigate the Lower S

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Hahm, Eunil, Ahla Jo, Sang Hun Lee, Homan Kang, Xuan-Hung Pham, and Bong-Hyun Jun. "Silica Shell Thickness-Dependent Fluorescence Properties of SiO2@Ag@SiO2@QDs Nanocomposites." International Journal of Molecular Sciences 23, no. 17 (2022): 10041. http://dx.doi.org/10.3390/ijms231710041.

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Silica shell coatings, which constitute important technology for nanoparticle (NP) developments, are utilized in many applications. The silica shell’s thickness greatly affects distance-dependent optical properties, such as metal-enhanced fluorescence (MEF) and fluorescence quenching in plasmonic nanocomposites. However, the precise control of silica-shell thicknesses has been mainly conducted on single metal NPs, and rarely on complex nanocomposites. In this study, silica shell-coated Ag nanoparticle-assembled silica nanoparticles (SiO2@Ag@SiO2), with finely controlled silica shell thicknesse

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Vijayan, R., G. Suresh Kumar, N. Surumbarkuzhali, and Eswaramoorthy K Varadharaj. "(Digital Presentation) Sol – Gel Process of Activated Carbon Based Silica Nanostructure Using Rice Husk Template for Supercapacitor Applications." ECS Meeting Abstracts MA2022-01, no. 1 (2022): 13. http://dx.doi.org/10.1149/ma2022-01113mtgabs.

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Rice hulls have portrayed large potential in becoming a sustainable biomass source in producing silica, cellulose, and carbon materials, which garnered well-known interest in the middle of researchers. In recent years, silica-based supercapacitors have emerged as leading energy storage devices that can be mostly used in hybrid electric vehicles, memory devices, etc owing to their unique features like fast charge and discharge rate, long cycle life, high power density, high reliability, etc. The objective of the current study is to determine and compare the specific capacitance of pure silica (

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Fujino, Shigeru, and Hiroshi Ikeda. "Room Temperature Imprint Using Crack-Free Monolithic SiO2-PVA Nanocomposite for Fabricating Microhole Array on Silica Glass." Journal of Nanomaterials 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/584320.

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This paper aims to fabricate microhole arrays onto a silica glass via a room temperature imprint and subsequent sintering by using a monolithic SiO2-poly(vinyl alcohol) (PVA) nanocomposite as the silica glass precursor. The SiO2-PVA suspension was prepared from fumed silica particles and PVA, followed by drying to obtain tailored SiO2-PVA nanocomposites. The dependence of particle size of the fumed silica particles on pore size of the nanocomposite was examined. Nanocomposites prepared from 7 nm silica particles possessed suitable mesopores, whereas the corresponding nanocomposites prepared fr

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Ham, Kyeong-Min, Minhee Kim, Sungje Bock, et al. "Highly Bright Silica-Coated InP/ZnS Quantum Dot-Embedded Silica Nanoparticles as Biocompatible Nanoprobes." International Journal of Molecular Sciences 23, no. 18 (2022): 10977. http://dx.doi.org/10.3390/ijms231810977.

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Quantum dots (QDs) have outstanding optical properties such as strong fluorescence, excellent photostability, broad absorption spectra, and narrow emission bands, which make them useful for bioimaging. However, cadmium (Cd)-based QDs, which have been widely studied, have potential toxicity problems. Cd-free QDs have also been studied, but their weak photoluminescence (PL) intensity makes their practical use in bioimaging challenging. In this study, Cd-free QD nanoprobes for bioimaging were fabricated by densely embedding multiple indium phosphide/zinc sulfide (InP/ZnS) QDs onto silica template

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Wood, D. L., and E. M. Rabinovich. "Study of Alkoxide Silica Gels by Infrared Spectroscopy." Applied Spectroscopy 43, no. 2 (1989): 263–67. http://dx.doi.org/10.1366/0003702894203282.

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The infrared spectra of silica gels made from alkoxides are different from those made from fumed silica, and from the infrared spectra of other amorphous silicas in which the SiO2 network is relatively complete. One important feature of these spectra is the occurrence of an absorption band at 960 cm−1 due to the vibration of dangling -Si-OH bonds in the alkoxide gels, which is not present in many other silicas. There also are less well-defined absorption bands due to structural defects for the alkoxide gels, but their interpretation is speculative. Dried gels made with more concentrated reacta

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Zhi, Xintao, Xiaopeng Li, Songmei Yuan, Dasen Wang, and Kehong Wang. "Influence of Thermal Annealing on Mechanical and Optical Property of SiO2 Film Produced by ALD." Materials 17, no. 2 (2024): 470. http://dx.doi.org/10.3390/ma17020470.

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The application range of fused silica optical components can be expanded and the cost of fused silica components can be reduced by depositing the same material film on fused silica substrate. However, due to the different manufacturing process, the performance of ALD SiO2 film is lower than that of fused silica substrate, which also limits the use of this process. In this paper, ALD SiO2 film with different thicknesses were deposited, and then the structure and properties were tested. Finally, the ALD SiO2 film was treated via the annealing process. Transmission electron microscopy (TEM) showe

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Ma, Guang Hui, Fa Ai Zhang, and Chang Sheng Gu. "Preparation of Polymer Microspheres Using Silane Coupling Agent Modified Nano-SiO₂ as Single Stabilizer." Advanced Materials Research 341-342 (September 2011): 247–51. http://dx.doi.org/10.4028/www.scientific.net/amr.341-342.247.

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This paper demonstrates that silica nanoparticles were modified by the four silane coupling agents (KH-151, KH-550, KH-560, KH-570) firstly, then polystyrene/silica (PS/SiO2) composite microsphere with PS core and silica nanoparticles shell were prepared by Pickering emulsion polymerization. The characterization of optical microscope (OM), scanning electron microscope (SEM), and thermogravimetic analysis ( TGA) illustrates that these microsphere are composed of PS and silica nanoparticles. Silica nanoparticles modified by the different silane coupling agents could form the stable PS/SiO2 micro

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Dissertations / Theses on the topic "Silica (SiO2)"

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IOVINO, Giuseppe. "Properties of the O2 diffusion process in amorphous SiO2 nanoparticles." Doctoral thesis, Università degli Studi di Palermo, 2014. http://hdl.handle.net/10447/90989.

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Santos, Daniele Cristina Almeida Hummel Pimenta. "Obtenção e caracterização de materiais dopados SiO2-CdSe a partir de sonogeis de silica." [s.n.], 1994. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265224.

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Orientador: Iris Concepcion Linares de Torriani<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-09-27T18:28:15Z (GMT). No. of bitstreams: 1 Santos_DanieleCristinaAlmeidaHummelPimenta_D.pdf: 23843878 bytes, checksum: 5825039acff4dd02da9447f4347a544f (MD5) Previous issue date: 1994<br>Resumo: O processo de obtenção de materiais pela via sol-gel tem-se mostrado muito interessante na obtenção de novos materiais como atesta o grande número de trabalhos desenvolvidos na última década. A possibilidade de obter materiais s

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Santos, Maria de Lourdes dos. "Reutilização de resíduo SiO2 como potencial na confecção de massa refratária de sílica." Universidade do Estado de Santa Catarina, 2013. http://tede.udesc.br/handle/handle/1642.

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Made available in DSpace on 2016-12-08T17:19:20Z (GMT). No. of bitstreams: 1 resumo.pdf: 33365 bytes, checksum: c0d79b06b712dd7d33a99ff2c405578a (MD5) Previous issue date: 2013-02-26<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The silica refractory is nowadays one of the most used linings in the world due to its excellent cost/benefit ratio. The silica sand is available in abundance in the market for use as a raw material for production of ordinary applications refractories, and this does not encourage the search for new usages of its wastes. However, in some industrial

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Izaak, T. I., D. О. Martynova, V. V. Maas, E. М. Slavinskaya, А. I. Boronin, and Y. W. Chen. "Synthesis and Properties of Ag / CuO / SiO2 Nanocomposites." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35611.

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In this paper the composites Ag / SiO2 with regularly distributed in bulk matrix silver and copper oxide nanoparticles were synthesized. Herewith, copper ions was introduced into porous support at the stage of sol-gel synthesis. Sample Ag / CuO / SiO2 was tested by the catalytic reaction of CO oxidation and com-pared with Ag / SiO2. It was revealed that sample with introduced copper show lower activity .This fact can be explained by formation of silver cuprate during preparation of composite Ag / CuO / SiO2. Treatment by reaction mixture (CO and O2) led to release of silver in ionic, clusters

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Nunes, Eloiza da Silva [UNESP]. "Preparação e caracterização de nanocompósitos de Fe@SiO2, Fe@Fe3O4 e Fe3O4@PNIPAM." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/124538.

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Made available in DSpace on 2015-07-13T12:10:33Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-02-05. Added 1 bitstream(s) on 2015-07-13T12:24:08Z : No. of bitstreams: 1 000826270_20160205.pdf: 226859 bytes, checksum: 619f39d8f546393cad7cff3abb1a91cb (MD5) Bitstreams deleted on 2016-02-05T13:56:02Z: 000826270_20160205.pdf,. Added 1 bitstream(s) on 2016-02-05T13:56:44Z : No. of bitstreams: 1 000826270.pdf: 25046020 bytes, checksum: fb29338aa8631d88b7bca10a5d22a9be (MD5)<br>Neste trabalho foi investigada a obtenção de nanopartículas de ferro metálico em diferentes meios não aquosos

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Barclay, Joshua David. "High Temperature Water as an Etch and Clean for SiO2 and Si3N4." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404614/.

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An environmentally friendly, and contamination free process for etching and cleaning semiconductors is critical to future of the IC industry. Under the right conditions, water has the ability to meet these requirements. Water becomes more reactive as a function of temperature in part because the number of hydronium and hydroxyl ions increase. As water approaches its boiling point, the concentration of these species increases over seven times their concentrations at room temperature. At 150 °C, when the liquid state is maintained, these concentrations increase 15 times over room temperature. Du

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Shajkumar, Aruni. "Yolk-Shell Nanostructures Prepared via Block Copolymer Self-Assembly for Catalytic Applications." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-232735.

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Yolk-shell nanostructures/yolk-shell nanoparticles are defined as a hybrid structure, a mixture of core/shell and hollow particles, where a core particle is encapsulated inside the hollow shell and may move freely inside the shell. Of the various classifications of yolk-shell nanostructures, a structure with an inorganic core and inorganic shell (inorganic/inorganic) has been studied widely due to their unique optical, magnetic, electrical, mechanical, and catalytic properties. In the work presented here, among the different inorganic/inorganic yolk-shell nanostructures noble metal@silica yolk

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LORENZI, ROBERTO. "Silica based functional materials: - Charge transport in nanostructured SnO2: SiO2 thin films. - Second harmonic generation in niobium potassium silicate glasses. - Tapered silica optical microfibres for gas sensors." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2010. http://hdl.handle.net/10281/10933.

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"Charge transport in nanostructured SnO2:SiO2 thin films": Silica based nanostructured thin films grown on silicon substrates are promising materials for novel light emitter devices. In particular, tin dioxide is a wide band gap n-type semiconductor (Eg=3.6 eV) with an expected band-to-band emission centered in the ultraviolet (344 nm) region of the electromagnetic spectrum. Our group succesfully demonstrated UV emission from such systems, but at the beginning of my work many issues in charge transport processes needed to be explained. Aim of this project was to clarify electric transport a

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Gabsi-Wolf, Nadia. "Etude et modélisation de la précipitation de la silice selon le procédé Stöber en phase homogène et en émulsion." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL041N/document.

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L’étude de la précipitation de la silice amorphe à partir de TétraEthylOrtoSilicate (TEOS) et d’eau, selon le procédé Stöber, a permis de quantifier la cinétique de réaction par spectroscopie Infra Rouge à Transformée de Fourrier. Nous avons montré que la croissance des particules se fait par agrégation des nuclei, qui sont formés tout au long de la réaction. La transposition de ce procédé en microémulsion eau-dans-huile a permis de synthétiser des nanoparticules de silice de tailles contrôlées. L’hydrolyse du TEOS est ici dix fois plus faible qu’en phase homogène. Lors de l’ajout du TEOS à la

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Feltrin, Jucilene. "Estabilização a elevadas temperaturas da fase anatase com partículas submicrométricas de SiO2." reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/100746.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2012<br>Made available in DSpace on 2013-06-25T22:14:09Z (GMT). No. of bitstreams: 1 315030.pdf: 3432223 bytes, checksum: 84054f849bb4c014ae9bc3dca9e31665 (MD5)<br>Este estudo descreve rotas desenvolvidas para obter a estabilidade da fase anatase em temperaturas acima de 900oC, através da mistura via seco de titânia e estabilizantes (quartzo e sílica amorfa), prensagem e tratamento térmico em condições industriais típicas da cerâmic

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Books on the topic "Silica (SiO2)"

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Devine, Roderick A. B. The Physics and Technology of Amorphous SiO2. Springer US, 1988.

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International, Symposium on SiO2 Advanced Dielectrics and Related Devices (10th 2014 Cagliari Italy). Fundamentals and Applications in Silica and Advanced Dielectrics (SiO2014): X International Symposium on SiO2, Advanced Dielectrics and Related Devices, Cagliari, Italy, 16-18 June 2014. AIP Publishing, 2014.

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Angeles, CA) International Symposium on the Physics and Chemistry of SiO₂ and the Si-SiO₂ Interface (5th 2005 Los. The physics and chemistry of SiO₂ and the Si-SiO₂ interface--5. Electrochemical Society, 2005.

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International Symposium on the Physics and Chemistry of SiO₂ and the Si-SiO₂ Interface (3rd 1996 Los Angeles, Calif.). The physics and chemistry of SiO₂ and the Si-SiO₂ interface-3, 1996: Proceedings of the Third International Symposium on the Physics and Chemistry of SiO₂ and the Si-SiO₂ Interface. Edited by Massoud Hisham Z, Poindexter Edward H, and Helms C. Robert. Electrochemical Society, 1996.

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Robert, Helms C., Deal Bruce E, Electrochemical Society Electronics Division, Electrochemical Society. Dielectric Science and Technology Division., and Symposium on the Physics and Chemistry of the SiO₂ and Si-SiO₂ Interface (2nd : 1992 : St. Louis, Mo.), eds. The Physics and chemistry of SiO₂ and the Si-SiO₂ interface 2. Plenum Press, 1993.

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International Symposium on the Physics and Chemistry of SiO₂ and the Si-SiO₂ Interface (4th 2000 Toronto, Ont.). The physics and chemistry of SiO₂ and the Si-SiO₂ interface--4, 2000: Proceedings of the Fourth International Symposium on the Physics and Chemistry of SiO₂ and the Si-SiO₂ Interface, Toronto, Canada, May 15-18, 2000. Edited by Massoud Hisham Z, Electrochemical Society Electronics Division, and Electrochemical Society. Dielectric Science and Technology Division. Electrochemical Society, 2000.

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B, Devine Roderick A., Duraud J. -P, and Dooryhée E, eds. Structure and imperfections in amorphous and crystalline SiO₂. Wiley, 2000.

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Symposium on the Physics and Chemistry of SiO₂ and the Si-SiO₂ Interface (1st 1988 Atlanta, Ga.). The physics and chemistry of SiO₂ and the Si-SiO₂ interface. Plenum Press, 1988.

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B, Devine Roderick A., ed. The physics and technology of amorphous SiO₂. Plenum Press, 1988.

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R.A. Weeks International Symposium on Science and Technology of SiO₂̳ and Related Materials (1993 Honolulu, Hawaii). The R.A. Weeks International Symposium on Science and Technology of SiO₂ and Related Materials. American Ceramic Society, 1994.

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Book chapters on the topic "Silica (SiO2)"

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Buchenau, U. "Low Lying Excitations in Silica." In The Physics and Technology of Amorphous SiO2. Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1031-0_4.

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RADZIG, V. A. "DEFECTS ON ACTIVATED SILICA SURFACE." In Defects in SiO2 and Related Dielectrics: Science and Technology. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-010-0944-7_12.

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Hobbs, Linn W., and Xianglong Yuan. "TOPOLOGY AND TOPOLOGICAL DISORDER IN SILICA." In Defects in SiO2 and Related Dielectrics: Science and Technology. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-010-0944-7_2.

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Skuja, L. "OPTICAL PROPERTIES OF DEFECTS IN SILICA." In Defects in SiO2 and Related Dielectrics: Science and Technology. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-010-0944-7_3.

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Gasparik, Tibor. "System CaO–MgO–Al2O3–SiO2 Undersaturated with Silica." In Phase Diagrams for Geoscientists. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5776-3_5.

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Gasparik, Tibor. "System CaO–MgO–Al2O3–SiO2 Saturated with Silica." In Phase Diagrams for Geoscientists. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5776-3_6.

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Gasparik, Tibor. "System CaO-MgO-Al2O3-SiO2 Undersaturated with Silica." In Phase Diagrams for Geoscientists. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-38352-9_5.

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Gasparik, Tibor. "System CaO-MgO-Al2O3-SiO2 Saturated with Silica." In Phase Diagrams for Geoscientists. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-38352-9_6.

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Chan, S. L., L. F. Gladden, and S. R. Elliott. "NMR Studies of Neutron-Irradiated Crystalline and Vitreous Silica." In The Physics and Technology of Amorphous SiO2. Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1031-0_9.

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Haglund, R. F., D. L. Kinser, H. Mogul, N. H. Tolk, P. W. Wang, and R. A. Weeks. "Effects of Processing on Radiation Damage Thresholds in Silica Glasses." In The Physics and Technology of Amorphous SiO2. Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1031-0_29.

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Conference papers on the topic "Silica (SiO2)"

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DeAngelis, Emma, Mohamed Yaseen Noor, Maxwell Weiss, Carmen Menoni, and Enam Chowdhury. "Femtosecond Laser Damage Comparison between Silica/Hafnia Nanolaminates vs. Mixed Material Coatings for High Power Laser Optics." In CLEO: Science and Innovations. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_si.2024.sf2i.6.

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Two layer anti-reflection coatings (Air/SiO2/HfSiO/substrate. vs Air/SiO2/Hf-SiO2 nanolaminates/substrate) were tested with p-polarized 77 fs 1030 nm laser pulses. Damage threshold fluence of the sample with nanolaminate was ~ 2/3 of the damage fluence of the mixed layer sample.

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McNallan, Michael. "High Temperature Corrosion of Silicon Based Ceramics in Environments Containing Halogens and Alkali Halides." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99275.

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Abstract Silicon carbide and other silicon-based ceramics obtain their oxidation resistance by the formation of protective silica films in oxygen containing environments. In the presence of chlorine or alkali chlorides, this film may not form, or may be unprotective, so that accelerated oxidation occurs. Chlorine and alkali halides may contribute to accelerated oxidation via three possible mechanisms. Active oxidation occurs at relatively low temperatures and high ratios of chlorine to oxygen, and is characterized by simultaneous formation of silicon chlorides and non-protective oxides. Silica

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Hokin, Carolyn C., Kevin A. Laverty, Matt Brophy, Dan Brooks, Pete Kupinski, and Brandon D. Chalifoux. "Ultrafast Laser Stress Figuring (ULSF) for Compensation of High Energy Laser Dielectric Coatings." In Optical Interference Coatings. Optica Publishing Group, 2025. https://doi.org/10.1364/oic.2025.me.3.

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Ultrafast laser stress figuring (ULSF) can correct coating-induced figure deformation via stress fields patterned into bulk material. We investigate the stability of ULSF processed fused silica coated with an ion beam sputtered Ta2O5/SiO2 film.

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Duke, Dan, and Lietai Yang. "Laboratory and Field Studies of Localized and General Corrosion Inhibiting Behaviors of Silica in Zero Liquid Discharge (High TDS Cooling Water) Using Real Time Corrosion Monitoring Techniques." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07626.

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Abstract Corrosion rate studies were conducted in the laboratory on high total dissolved solids (TDS), zero liquid discharge (ZLD) cooling water. The cooling water had been treated with silica corrosion inhibitor chemistry in the field operating system. Corrosion rates were measured using real time coupled multi-electrode array sensor technology. The study evaluated both general and localized (pitting) corrosion rates for carbon steel (CS), copper, aluminum, zinc and stainless metals at temperatures ranging from 77 to 190°F (25 to 88°C). The study confirmed that the silica chemistry provided e

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Gorni-Pinkesfeld, O., D. Hasson, H. Shemer, and R. Semiat. "Silica Removal by a Novel Electrochemical System." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07039.

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Abstract The presence of silica in brackish water greatly complicates desalination processes. Mitigation of silica scale by dosage of anti-scalants has proved to be an elusive task. The common method of silica removal is by its precipitation at high pH with polyvalent metal hydroxides. A convenient way for achieving a high pH is by applying an electric current in an electrochemical cell. Silica removal was investigated using a novel electrochemical technique, based on a cation exchange membrane (ECM). The ECM system overcomes a major drawback of current electrochemical technology, enabling red

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Nakamura, Yuji, Yasuki Matsukawa, Shinji Okazaki, and Shukuji Asakura. "Proposal of a New Corrosion Index for Domestic Tap Water in Japan." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19056.

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Abstract This paper proposes a new corrosion index that can be effectively applied to tap water having low calcium hardness and high soluble silica (SiO2) concentration. Tap water at 70 different locations in Japan were sampled, and corrosivity for carbon steel dipping in flowing tap waters were evaluated. The average corrosion rate vavg was obtained by the weight loss method. The results showed that vavg was strongly dependent on the concentrations of SO42- and SiO2. The application of conventional corrosion indexes to Japanese tap water was examined with unsuccessful results. In view of thes

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Zafred, Paolo R., Stephen W. Sofie, and Paul S. Gentile. "Progress in Understanding Silica Transport Process and Effects in Solid Oxide Fuel Cell Performance." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33297.

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One of the enabling technologies required for commercialization of high efficiency solid oxide fuel cell (SOFC) stacks is the development of low cost ceramic refractories capable of withstanding the harsh environment during start-up and steady state operation. Although low density, high purity fibrous alumina materials have been used for more than two decades in manufacturing of SOFC stack components, their low mechanical strength and high cost have precluded their use in the next generation pre-commercial generator modules. A current trend in SOFC stack design is to use high strength, low pur

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Rampe, Meytij Jeanne, Johny Zeth Lombok, Henny Lieke Rampe, Vistarani Arini Tiwow, and Indah Panawar. "Extraction of Silica (SiO2) from White Sand, Sulawesi Island." In Unima International Conference on Science and Technology 2022. Trans Tech Publications Ltd, 2023. http://dx.doi.org/10.4028/p-yrdx1h.

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The natural resources of the coastal sands of North Sulawesi are very potential and need to be explored and developed. Sand is composed of compounds based on the location of the sand along the coast. The potential of beach sand, namely Si (Silicon) can be a basic material such as SiC (Silicon Carbide) functional materials, semiconductors, and others. The first stage is sampling of white sand at several points and varying sand depths. Furthermore, the white sand is cleaned of impurities and iron sand. The second stage is sand preparation, sand identification and the third stage is silica extrac

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Yang, Huan, Ben Q. Li, and Changhong Liu. "Enhanced Light Absorption in Thin Crystalline Silicon Solar Cells With Silica Nanoparticles." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52492.

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In this paper, numerical simulations are performed to investigate the effects of different configurations of dielectric SiO2 particles on the improvement of light absorption in 2-μm single crystal silicon photovoltaic solar cells. The numerical model is developed on the basis of the FDTD solution of the transient Maxwell equations and checked with analytical solutions for simple configurations and against experimental measurements of light absorption in bare Si films. The numerical model is also checked for mesh sensitivity such that the computed data are approximately mesh-insensitive. Comput

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Marchenko, V. M. "Photochemical Start-Up of Photorefractivity in SiO2 and SiO2: GeO2 Glasses." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.sub.17.

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Progress in applications of photosensitivity of silica glasses for fabrication of reflection optical fiber gratings is restrained by an obscurity of nature of photorefractivity of the glasses. There is a lot of inconsistent interpretations of spectral properties of oxygen deficient centers (ODC) responsible of UV absorbance of the glasses. Photoinduced refractive index variations of the glasses are in accordance with Kramers- Kronig relation due to the absorbance changes. As much as ~ 10-4 photoinduced index variation of Ge- doped silica at 1.5 μm is for instance explained by photobleaching of

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Reports on the topic "Silica (SiO2)"

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Han, Yoonjung, Jeffrey Bullard, Jedadiah Burroughs, Mine Ucak-Astarlioglu, and Jameson Shannon. Extending CEMHYD3D to simulate hydration of portland cement pastes with high volumes of silica fume. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/49196.

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Silica fume (SF) influences the hydration rate of Portland cement in different ways depending on the physical and chemical properties of the SF. This study reports the impact of SiO2 content (%), loss on ignition (%), and Brunauer–Emmett–Teller (BET) specific surface area on the hydration reaction of SF-cement paste mixtures. This study used five types of SFs with varying SiO2 content, loss on ignition (%), and particle morphology. Five SFs were mixed with Class H oil well cement at each of two different replacement levels (20% or 30% by mass), and the released heat of hydration was measured u

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Blair, Victoria, Michael Golt, Andrew Rosenberger, and Leah Hlubb. Cold Sintering of Zinc Oxide (ZnO) and Silica (SiO2). DEVCOM Army Research Laboratory, 2022. http://dx.doi.org/10.21236/ad1181182.

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Patricia M. Dove. Quantifying Silica Reactivity in Subsurface Environments: Reaction Affinity and Solute Matrix Controls on Quartz and SiO2 Glass Dissolution Kinetics. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/791682.

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Dove, Patricia M. Quantifying Silica Reactivity in Subsurface Environments: Reaction Affinity and Solute Matrix Controls on Quartz and SiO2 Glass Dissolution Kinetics. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/827365.

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Chizmeshya, A., A. Demkov, T. Lenosky, and O. Sankey. Energetics of crystalline silicon dioxide-silicon (SiO2/Si) interfaces. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/13850.

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Franke, J., M. O. Liedke, P. Dahmen, et al. Influence of coating structure of an SiOx barrier coating on a PET substrate on water vapor permeation activation energy. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.nn.1.

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The application of plasma polymerized silicon-based coatings on plastic substrates is an effective way to adjust the permeability of the substrate. However, the permeation mechanisms are yet not fully understood. Here, the activation energy of permeation can offer valuable insights. In order to understand how the activation energy of permeation depends on the coating structure, five silicon-based coatings with varying oxygen content were analyzed, which led to property modifications ranging from silicon-oxidic to silicon-organic. Positron annihilation spectroscopy was employed to characterize

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Washington, Derwin. Reactive Ion Etching of PECVD Silicon Dioxide (SiO2) Layer for MEMS Application. Defense Technical Information Center, 2004. http://dx.doi.org/10.21236/ada425806.

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Vitkavage, Susan C., Eugene A. Irene, and Hisham Z. Massoud. An Investigation of Si-SiO2 Interface Charges in Thermally Oxidized (100), (110), (111), (511) Silicon. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada231244.

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Fitch, J. T., E. Kobeda, G. Lucovsky, and E. A. Irene. Effects of Thermal History on Stress-Related Properties of Very Thin Films of Thermally Grown Silicon Dioxide, SiO2. Defense Technical Information Center, 1989. http://dx.doi.org/10.21236/ada206547.

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Dove, P. M. Quantifying silica reactivity in subsurface environments: Reaction affinity and solute matrix controls on quartz and SiO{sub 2} glass. 1997 annual progress report. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/13538.

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