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Journal articles on the topic 'Silicon dioxide matrix'

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Published: 4 June 2021
Last updated: 9 February 2022

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1

Grigor’ev, L. V., and A. V. Mikhaĭlov. "Investigating the energy spectrum of silicon nanoclusters in a silicon dioxide matrix." Journal of Optical Technology 81, no. 10 (October 1, 2014): 616. http://dx.doi.org/10.1364/jot.81.000616.

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2

Shimizu-Iwayama, T., S. Nakao, K. Saitoh, and N. Itoh. "Photoluminescence from nanoparticles of silicon embedded in an amorphous silicon dioxide matrix." Journal of Physics: Condensed Matter 6, no. 39 (September 26, 1994): L601—L606. http://dx.doi.org/10.1088/0953-8984/6/39/005.

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3

Ma, Run Bo, Shi Meng Xu, and Jian Hua Du. "Application and Research of Monte Carlo Method on Surface Morphology of Copper Matrix Composites." Advanced Materials Research 791-793 (September 2013): 519–22. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.519.

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Through the analysis and research on the microstructure and phase diagram of copper matrix composites, by use of collage method to approximate graphite particle and silicon dioxide particle, combined with statistical method analyzing some statistical characteristics of graphite particle and silicon dioxide particle .On the basis of the result that have been get in this paper, microstructure and phase diagram of copper matrix composites was simulated by taking advantage of direct Monte Carlo method.
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4

Komogortsev, S. V., T. N. Patrusheva, D. A. Balaev, E. A. Denisova, and I. V. Ponomarenko. "Cobalt ferrite nanoparticles in a mesoporous silicon dioxide matrix." Technical Physics Letters 35, no. 10 (October 2009): 882–84. http://dx.doi.org/10.1134/s1063785009100022.

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5

Xiong, Chao, Weilong Xu, Yu Zhao, Jin Xiao, and Xifang Zhu. "New design graded refractive index antireflection coatings for silicon solar cells." Modern Physics Letters B 31, no. 19-21 (July 27, 2017): 1740028. http://dx.doi.org/10.1142/s0217984917400280.

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Reflectance spectrum of nanoporous silicon dioxide (SiO2) double layer was calculated by using the matrix method. The results were compared with the corresponding spectrum of silicon oxynitride (SiO[Formula: see text]N[Formula: see text])–porous silicon (PS) double layer which deposited on nanostructured black silicon coatings. The nanoporous silicon dioxide (SiO2) double layer deposited on nanostructure black silicon antireflection coating presents a lower reflectance in a broad range of solar spectrum. This research outcome may find a wide application in solar cell industry.
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6

Qin, Wenzhen, Frederic Vautard, Per Askeland, Junrong Yu, and Lawrence Drzal. "Modifying the carbon fiber–epoxy matrix interphase with silicon dioxide nanoparticles." RSC Advances 5, no. 4 (2015): 2457–65. http://dx.doi.org/10.1039/c4ra11878b.

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7

Zhang, Ying Chao. "Fabrication of Stearic Acid/Silicon Dioxide Composite Shape-Stabilized Phase Change Materials for Thermal Energy Storage." Applied Mechanics and Materials 521 (February 2014): 609–12. http://dx.doi.org/10.4028/www.scientific.net/amm.521.609.

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Stearic acid/silicon dioxide composite shape-stabilized phase change materials with different mass fraction of stearic acid have been successfully prepared using sol-gel methods. In such an organic/inorganic composite structure, the stearic acid was used as the filling material that is the latent heat storage phase change material (PCM), and the silicon dioxide acted as the matrix material which prevented the leakage of the melted stearic acid. The structure, morphology, thermal properties, thermal conductivity of the composite PCM were determined by X-ray powder diffraction (XRD), Fourier transform infrared (FT-IR) spectra, Scanning electron microscope (SEM) and Differential scanning calorimetry (DSC). The results show that the form-stable composite PCM has the optimal effect, preventing the leakage of stearic acid from the matrix of silicon dioxide, emerges when the composite containing 50% (mass fraction) stearic acid. The latent heat and melting temperature of the corresponding composite PCM is measured as 85.7J/g and 52.2 °C respectively. Meanwhile, the thermal conductivity of the composite PCM could be improved effectively by using silicon dioxide as a supporting material.
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8

Timoshenko, V. Yu, D. M. Zhigunov, P. K. Kashkarov, O. A. Shalygina, S. A. Teterukov, R. J. Zhang, M. Zacharias, M. Fujii, and Sh Hayashi. "Photoluminescence properties of erbium-doped structures of silicon nanocrystals in silicon dioxide matrix." Journal of Non-Crystalline Solids 352, no. 9-20 (June 2006): 1192–95. http://dx.doi.org/10.1016/j.jnoncrysol.2005.11.119.

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9

Hass, Jamie L., Erin M. Garrison, Sarah A. Wicher, Ben Knapp, Nathan Bridges, DN Mcllroy, and Gustavo Arrizabalaga. "Synthetic osteogenic extracellular matrix formed by coated silicon dioxide nanosprings." Journal of Nanobiotechnology 10, no. 1 (2012): 6. http://dx.doi.org/10.1186/1477-3155-10-6.

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10

Gusev, O. B., A. V. Ershov, D. A. Grachev, B. A. Andreev, and A. N. Yablonskiy. "EFFECT OF SURFACESi--SiDIMERS ON PHOTOLUMINESCENCE OF SILICON NANOCRYSTALS IN THE SILICON DIOXIDE MATRIX." Журнал Экспериментальной и Теоретической Физики 145, no. 5 (2014): 830–37. http://dx.doi.org/10.7868/s0044451014050061.

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11

Wu, Zhi-Yong, Ke-Xin Liu, and Xiao-Tang Ren. "Relative enhancement of photoluminescence intensity of passivated silicon nanocrystals in a silicon dioxide matrix." Chinese Physics B 21, no. 9 (September 2012): 097804. http://dx.doi.org/10.1088/1674-1056/21/9/097804.

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12

Zhang, Tian, Brian Simonds, Keita Nomoto, Binesh Puthen Veettil, Ziyun Lin, Ivan Perez Wurfl, and Gavin Conibeer. "Pulsed KrF excimer laser dopant activation in nanocrystal silicon in a silicon dioxide matrix." Applied Physics Letters 108, no. 8 (February 22, 2016): 083103. http://dx.doi.org/10.1063/1.4942466.

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13

Zimina, Anna, Stefan Eisebitt, Wolfgang Eberhardt, Johannes Heitmann, and Margit Zacharias. "Electronic structure and chemical environment of silicon nanoclusters embedded in a silicon dioxide matrix." Applied Physics Letters 88, no. 16 (April 17, 2006): 163103. http://dx.doi.org/10.1063/1.2193810.

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14

Apakashev, Rafail, Stanislav Davydov, and Niyaz Valiev. "High-Temperature Synthesis of Composite Material from Al-SiO2 System Components." Advanced Materials Research 1064 (December 2014): 58–61. http://dx.doi.org/10.4028/www.scientific.net/amr.1064.58.

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The research involves studying the high-temperature chemical interaction of the Al-SiO2 system components. The high-temperature interaction of molten aluminum and silicon dioxide results in formation of aluminum matrix composite material containing silicon microparticles. The predominant linear size of silicon microparticles amounts to 3 - 5 microns, their mass fraction in the composite reaches 29 %.
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15

Baez-Castillo, L., E. Ortiz-Rascón, I. López-Miranda, R. Carrillo-Torres, and M. E. Álvarez-Ramos. "Embedding Silicon Dioxide Nanospheres for Homogeneous Incorporation onto a Resin Matrix." Microscopy and Microanalysis 24, S1 (August 2018): 1432–33. http://dx.doi.org/10.1017/s143192761800764x.

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16

Nagornykh, S. N., V. I. Pavlenkov, A. N. Mikhailov, A. I. Belov, L. V. Krasil’nikova, D. I. Kryzhkov, and D. I. Tetel’baum. "Model of photoluminescence from ion-synthesized silicon nanocrystal arrays embedded in a silicon dioxide matrix." Technical Physics 57, no. 12 (December 2012): 1672–75. http://dx.doi.org/10.1134/s1063784212120213.

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17

Jia, Lei, Huiyu Li, Wentao Zhu, and Xinping Qiu. "Silicon dioxide molecular sieve with mono-layer carbon deposited in the channels and carbon nanotubes on the outside for lithium–sulfur batteries." RSC Advances 6, no. 65 (2016): 60550–55. http://dx.doi.org/10.1039/c6ra08977a.

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A novel sulfur host matrix prepared by the deposition of mono-layer carbon into silicon dioxide molecular sieve channels and carbon nanotubes on the molecular sieve surface is proposed as an electrode material for lithium sulfur batteries.
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18

Gusev, O. B., A. V. Ershov, D. A. Grachev, B. A. Andreev, and A. N. Yablonskiy. "Effect of surface Si-Si dimers on photoluminescence of silicon nanocrystals in the silicon dioxide matrix." Journal of Experimental and Theoretical Physics 118, no. 5 (May 2014): 728–34. http://dx.doi.org/10.1134/s1063776114040116.

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19

Babić, Davorin, Raphael Tsu, and Richard F. Greene. "Ground-state energies of one- and two-electron silicon dots in an amorphous silicon dioxide matrix." Physical Review B 45, no. 24 (June 15, 1992): 14150–55. http://dx.doi.org/10.1103/physrevb.45.14150.

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20

Kashkarov, P. K., M. G. Lisachenko, O. A. Shalygina, V. Yu Timoshenko, B. V. Kamenev, M. Schmidt, J. Heitmann, and M. Zacharias. "Photoluminescence of Er3+ ions in layers of quasi-ordered silicon nanocrystals in a silicon dioxide matrix." Journal of Experimental and Theoretical Physics 97, no. 6 (December 2003): 1123–30. http://dx.doi.org/10.1134/1.1641894.

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21

Hu, Xiao Lan, Yan Jie Li, Wen Hao Wang, Peng Hui Xie, and Yan Ming Dong. "Structure and Wear Properties of Nano-Silicon Dioxide Modified Polyacrylate Composites." Advanced Materials Research 79-82 (August 2009): 429–32. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.429.

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polyacrylate/nano-silicon dioxide nanocomposites were fabricated through a simple mixing process for resisting scratch and wear as coating. Chemical compatibility between polyacrylate matrix and nano-silicon dioxide (nano-SiO2) was achieved by functionalized nano-SiO2 via three silane coupling agents. Scanning electron microscopy (SEM) was done to characterize surface and wear morphology of the nanocomposites. Differential scanning calorimetry (DSC) was used for representing interfacial properties of the nanocomposites. A MM-200 machine and a Norman Tool RCA abrader were performed for testing friction and wear properties. SEM showed that incorporation of the nano-SiO2 functionalized with silane into the polyacrylate matrix showed a better dispersion than the composite without silane at low nanoparticle content (≤3 wt%). SEM also revealed that adhesive wear mechanism of the polyacrylate matrix was transited to dominated particle wear of the nanocomposites. An increase of glass transition temperature (Tg) was recorded via DSC at low nanoparticle content (1 wt%). Further addition of the nanoparticles to 3 wt% led to a 10°C increase in Tg comparing to neat polyacrylate. Results of friction and wear properties exhibited that friction coefficient and wear loss of the nanocomposites with silane were lower than those of the neat polyacrylate. The wear loss of the neat polyacrylate, the nanocomposite containing 3 wt% nanoparticles with silane KH570, and the nanocomposite with raw nano-particles were 108.6, 65.8, and 110.5mg, respectively. RCA results also showed a significant improvement of the nanocomposites in the presence of the nanoparticles with silane.
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22

Trubdja, Mladen F., Sriram Ramanathan, Michael F. Modest, and Vladimir S. Stubican. "Carbon Dioxide Laser Cutting of a Carbon-Fiber-Silicon Carbide-Matrix Composite." Journal of the American Ceramic Society 77, no. 1 (January 1994): 89–96. http://dx.doi.org/10.1111/j.1151-2916.1994.tb06961.x.

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23

Bera, S. K., S. Chaudhuri, and A. K. Pal. "Percolative conduction in CdSe nanoparticles embedded in a silicon dioxide dielectric matrix." Journal of Physics D: Applied Physics 33, no. 18 (September 1, 2000): 2320–26. http://dx.doi.org/10.1088/0022-3727/33/18/317.

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24

Mungondori, Henry H., and Lilian Tichagwa. "Photo-Catalytic Activity of Carbon/Nitrogen Doped TiO2-SiO2 under UV and Visible Light Irradiation." Materials Science Forum 734 (December 2012): 226–36. http://dx.doi.org/10.4028/www.scientific.net/msf.734.226.

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The sol gel synthesis method was used to prepare carbon and nitrogen doped titanium dioxide (TiO2) photo-catalyst using titanium tetrachloride (TiCl4) as the precursor. Doping was carried out to modify the absorption band edge of titanium dioxide. To avert the problem associated with use of powder TiO2, the photo-catalyst was immobilized on glass support using tetraethyl orthosilicate (TEOS), which served as a binder and precursor for silicon dioxide (SiO2). The prepared photo-catalytic materials were characterized by FT-IR, XRD, TEM, BET and DRS. The photo-catalytic efficiency of titanium dioxide immobilized on glass support was evaluated using the degradation of methyl orange (MeO) and phenol red (PRed) under ultraviolet and visible light irradiation. Doping with carbon and nitrogen, and incorporation of silicon dioxide into the titanium dioxide matrix allowed utilization of visible light by the prepared TiO2-SiO2nanocomposites. Photo-degradation tests were carried out for doped and undoped photo-catalyst. An increased rate of photo-oxidation of methyl orange and phenol red was observed under visible light irradiation as compared to UV light irradiation.
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25

Zayed, Sara M., Ahmad M. Alshimy, and Amal E. Fahmy. "Effect of Surface Treated Silicon Dioxide Nanoparticles on Some Mechanical Properties of Maxillofacial Silicone Elastomer." International Journal of Biomaterials 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/750398.

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Current materials used for maxillofacial prostheses are far from ideal and there is a need for novel improved materials which mimic as close as possible the natural behavior of facial soft tissues. This study aimed to evaluate the effect of adding different concentrations of surface treated silicon dioxide nanoparticles (SiO2) on clinically important mechanical properties of a maxillofacial silicone elastomer. 147 specimens of the silicone elastomer were prepared and divided into seven groups (n=21). One control group was prepared without nanoparticles and six study groups with different concentrations of nanoparticles, from 0.5% to 3% by weight. Specimens were tested for tear strength (ASTM D624), tensile strength (ASTM D412), percent elongation, and shore A hardness. SEM was used to assess the dispersion of nano-SiO2within the elastomer matrix. Data were analyzed by one-way ANOVA and Scheffe test (α=0.05). Results revealed significant improvement in all mechanical properties tested, as the concentration of the nanoparticles increased. This was supported by the results of the SEM. Hence, it can be concluded that the incorporation of surface treated SiO2nanoparticles at concentration of 3% enhanced the overall mechanical properties of A-2186 silicone elastomer.
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26

Timoshenko, V. Yu. "Erbium Ion Luminescence of Silicon Nanocrystal Layers in a Silicon Dioxide Matrix Measured under Strong Optical Excitation." Physics of the Solid State 47, no. 1 (2005): 121. http://dx.doi.org/10.1134/1.1853460.

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27

Shalygina, O. A., I. A. Kamenskikh, D. M. Zhigunov, V. Yu Timoshenko, P. K. Kashkarov, M. Zacharias, and M. Fujii. "Optical Properties of Silicon Nanocrystals in Silicon Dioxide Matrix Over Wide Ranges of Excitation Intensity and Energy." Journal of Nanoelectronics and Optoelectronics 4, no. 1 (April 1, 2009): 147–51. http://dx.doi.org/10.1166/jno.2009.1014.

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28

Zhang, Hongtao, Jinsong Zhang, and Hongyan Zhang. "Electromagnetic properties of silicon carbide foams and their composites with silicon dioxide as matrix in X-band." Composites Part A: Applied Science and Manufacturing 38, no. 2 (February 2007): 602–8. http://dx.doi.org/10.1016/j.compositesa.2006.02.014.

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29

Tyschenko, Ida E., A. B. Talochkin, E. N. Vandyshev, A. G. Cherkov, and Andrzej Misiuk. "The Properties of Hydrostatically Strained Ge and Si Nanocrystals in Silicon Dioxide Matrix." Solid State Phenomena 108-109 (December 2005): 39–44. http://dx.doi.org/10.4028/www.scientific.net/ssp.108-109.39.

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The properties of Si and Ge nanocrystals with uniformly strained Si-Si and Ge-Ge bonds have been studied. The strained Si and Ge nanocrystals were produced by the implantation of Ge+ or Si+ ions in thermally grown SiO2 films subsequently annealed under hydrostatic pressure ranging from 1 bar to 12 kbar. Correlation between the formation of the hydrostatically strained nanocrystals and the features of the photoluminescence spectra has been observed. The obtained results are discussed in terms of broadening energy gap between the levels of electron states of the hydrostatically strained nanocrystals. This effect brings about direct radiative recombination.
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30

Huang, He, Lei Sun, Haiyang He, and Tianbao Xia. "A New Silicon Dioxide-Coated MALDI-ToF Sample Plate for Peptide Analysis." BioMed Research International 2020 (June 30, 2020): 1–6. http://dx.doi.org/10.1155/2020/8597217.

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In this report, we describe the development and testing of a new coated plate which improves the sensitivity and accuracy in matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-ToF-MS). The coated plate was covered with a thin layer of hydrophobic silicon dioxide, which enabled sample enrichment due to the water repellent nature of the silicon dioxide surface. Sensitivity and required laser strengths were tested using peptide standards, with the results that these coated plates required lower laser power and showed increased sensitivity than that of common plates. Accuracy was tested using bacteria, saliva, and serum samples. The coated plates showed significantly increased degrees of accuracy through their capacity to reduce mass shift. The importance and necessity of accuracy analysis in the assessment of new sample plates, which is rarely described in other papers, is also discussed.
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31

Sayuti, Mohd, Shamsuddin Sulaiman, B. T. Hang Tuah Baharudin, Mohd Khairol A. Arifin, T. R. Vijayaram, and S. Suraya. "Effect of Quartz-Silicon Dioxide Particulate on Tensile Properties of Aluminium Alloy Cast Composites." Key Engineering Materials 471-472 (February 2011): 727–32. http://dx.doi.org/10.4028/www.scientific.net/kem.471-472.727.

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This paper describes an experimental investigation of the tensile properties of quartz-silicon dioxide particulate reinforced LM6 aluminium alloy composite. In this experimental, quartz-silicon dioxide particulate reinforced LM6 composite were fabricated by carbon dioxide sand moulding process with variation of the particulate content on percentage of weight. Tensile tests were conducted to determine tensile strength and modulus of elasticity followed by fracture surface analysis using scanning electron microscope to characterize the morphological aspects of the test samples after tensile testing. The results show that the tensile strength of the composites decreased with increasing of quartz particulate content. In addition, this research article is well featured by the particulate-matrix bonding and interface studies which have been conducted to understand the processed composite materials mechanical behaviour. It was well supported by the fractographs taken using the scanning electron microscope (SEM). The composition of SiO2 particulate in composite was increased as shown in EDX Spectrum and Fractograph.
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32

Hou, Xiaochen, Ying Hu, Xiyu Hu, and Dong Jiang. "Poly (ether ether ketone) composites reinforced by graphene oxide and silicon dioxide nanoparticles." High Performance Polymers 30, no. 4 (April 6, 2017): 406–17. http://dx.doi.org/10.1177/0954008317701549.

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Wear-resistant composites with excellent tribological performances and good mechanical/thermal properties were developed by blending the modification of nano-silicon dioxide (m-SiO2) and the modification of graphene oxide (m-GO) with a poly (ether ether ketone) (PEEK) matrix by twin-screw extrusion compounding and subsequently injection molding. The tribological behaviors and the mechanical/thermal properties of the composites were carefully investigated. Compared with pure PEEK, PEEK/m-GO, and PEEK/m-SiO2 composites, the PEEK/m-GO/m-SiO2 composites exhibited considerable enhancements in those performances. These were attributed to m-GO and m-SiO2 that carried the majority of the load during a sliding process and prevented severe wear of the matrix.
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33

Czakoj, Tomáš, Michal Košťál, Evžen Losa, and Vojtěch Rypar. "NEW VALIDATION OF SI CROSS-SECTION USING SILICA SAND." EPJ Web of Conferences 247 (2021): 10001. http://dx.doi.org/10.1051/epjconf/202124710001.

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Silicon cross-sections, being important for a criticality safety of final spent fuel disposals, were recently reevaluated within the IAEA INDEN project. Similarly, the thermal Scattering Law matrix for silicon dioxide, which is also important for criticality safety, was also reevaluated in the ENDF/B-VIII.0 library. Due to these reasons, a series of validation experiments with silica sand were performed at the LR-0 reactor. This paper describes these validation experiments, which used two different amounts of silica sand placed in the core. The first part of validation was carried out as critical experiments in order to benefit from the suitability of integral experiments for validation. The second part -fast neutron spectrum measurement in the sand -was performed in order to obtain knowledge of its characteristics and its agreement with a calculation. The results showed significant improvement of the Thermal Scattering Law matrix for silicon dioxide available in the ENDF/B-VIII.0 library. They also showed that the new INDEN evaluation of silicon cross-sections, together with its description in the ENDF/B-VIII.0 gives disagreement rate closest to the experiments carried out without silica sand insertions. The spectrum measurement showed that the calculations of fast neutron spectra in the sand show only slight differences between different evaluations of silicon cross-sections. However, the fast neutron spectrum is not dependent on the Thermal Scattering Law. The calculated spectra show relatively good agreement with the measurement.
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34

Chen, Ming Wei, Hai Peng Qiu, Jian Jiao, Yu Wang, and Wei Jie Xie. "High Temperature Oxidation Behavior of Silicon Carbide Ceramic." Key Engineering Materials 680 (February 2016): 89–92. http://dx.doi.org/10.4028/www.scientific.net/kem.680.89.

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Oxidation thermodynamics of silicon carbide (SiC)ceramic was studied by means of HSC Chemistry code, and the weight change, morphology and phase of oxidation products were analyzed by thermogravimetric analysis(TG), scanning electron microscopy(SEM ) and X-ray diffraction (XRD). The results showed that SiC ceramic could be oxidized to silicon dioxide(SiO2) with release of small molecular gases under oxidizing atmosphere at 800°C, and the formed SiO2 film with appropriate fluidity and low oxygen diffusion coefficient could prevent the spread of oxygen with the oxidation temperature increasing up to 1200°C, which favored the anti-oxidation of SiC ceramic matrix composite.
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35

Hao, X. J., E.-C. Cho, C. Flynn, Y. S. Shen, G. Conibeer, and M. A. Green. "Effects of boron doping on the structural and optical properties of silicon nanocrystals in a silicon dioxide matrix." Nanotechnology 19, no. 42 (September 25, 2008): 424019. http://dx.doi.org/10.1088/0957-4484/19/42/424019.

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36

Yastrebinsky, R. N., A. A. Karnauhov, and Anna V. Yastrebinskaya. "Modifying the Metal Oxide Filler with a Silicon-Organic Oligomer in a Solution of an Organic Solvent." Materials Science Forum 992 (May 2020): 775–79. http://dx.doi.org/10.4028/www.scientific.net/msf.992.775.

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The use of tungsten dioxide as a filler for a non-polar polymer matrix is limited due to its high hydrophilicity and abrasiveness, which degrades the properties of the filled polymers. The paper presents the results of studies on the surface modification of tungsten oxide with organosilicon polyethylsiloxane. The mechanisms for modifying the surface of tungsten dioxide, based on the fixation of the modifier under the action of intermolecular forces of attraction and interaction of the hydroxyl groups of the oxide surface with the reactive bonds of the Si-H oligomer, have been established. To create additional active centers in the form of groups (–OH) on the surface of tungsten dioxide, it was boiled, which contributes to the forced hydroxylation of the surface. The adsorption of polyethylsiloxane with powdered tungsten dioxide from n-hexane solution was investigated. The results on determination of the wetting angle of unmodified and modified tungsten dioxide powder are presented. It has been established that modification with polyethylsiloxane leads to an increase in the wetting angle of tungsten dioxide to 121o, which indicates its hydrophobic properties.
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37

Turishchev, S. Yu, E. V. Parinova, D. A. Koyuda, D. E. Spirin, D. N. Nesterov, R. V. Romantsov, J. A. Fedotovа, E. A. Streltsov, M. V. Malashchonak, and A. K. Fedotov. "MICROSCOPIC AND X–RAY SPECTROSCOPIC STUDY OF NI ROD MASSIVES IN SILICON DIOXIDE MATRIX." Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering 19, no. 1 (June 5, 2018): 50–58. http://dx.doi.org/10.17073/1609-3577-2016-1-50-58.

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38

Wang, Xin, Xiaohu Zhao, Mingzhu Wang, and Zhigang Shen. "The effects of atomic oxygen on polyimide resin matrix composite containing nano-silicon dioxide." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 243, no. 2 (February 2006): 320–24. http://dx.doi.org/10.1016/j.nimb.2005.09.020.

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39

Leavitt, John A., David K. Rollins, and Quintus Fernando. "Depth profile of silver in a matrix of silicon dioxide by Rutherford backscattering spectrometry." Analytical Chemistry 58, no. 1 (January 1986): 90–93. http://dx.doi.org/10.1021/ac00292a022.

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40

Turishchev, S. Yu, E. V. Parinova, F. Kronast, R. Ovsyannikov, N. V. Malashchenok, E. A. Streltsov, D. K. Ivanov, and A. K. Fedotov. "Photoemission electron microscopy of arrays of submicron nickel rods in a silicon dioxide matrix." Physics of the Solid State 56, no. 9 (September 2014): 1916–21. http://dx.doi.org/10.1134/s1063783414090297.

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41

Topor, Gabi, Kamel Earar, Ion Ciuca, Sorin Berbece, Victorita Stefanescu, Adrian Beznea, Camelia Ana Grigore, et al. "Mechanical Properties of Bis-GMA/HEMA Resin Composite with Addition of Silicon Dioxide Nanoparticles." Materiale Plastice 58, no. 1 (April 5, 2021): 257–64. http://dx.doi.org/10.37358/mp.21.1.5470.

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The study of the mechanical behavior of materials intended for dental restorations is of crucial importance in the production of a finished product. In the present work, two resins were used for the material matrix, Bisphenol A diglycidyl methacrylate (Bis-GMA), hydroxyethylmethacrylate (HEMA) and a nanofiller (SiO2). This study focuses on the influence of nanoparticle size (30, 50, 100 and 150 nm) on the mechanical properties (flexural strenght and modulus, compression strenght and modulus and work of fracture) of the manufactured composite materials. The results showed improvements in the mechanical integrity of the samples, but differed depending on the size of the nanoparticles added. These differences are closely related to the active surface of the nanoparticles, leading to differences in filler-resin matrix compatibility.
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Щербаков, И. П., and А. Е. Чмель. "Фотолюминесценция аморфного SiO-=SUB=-2-=/SUB=-, подвергнутого имплантации ионов Ar-=SUP=-+-=/SUP=-." Физика твердого тела 61, no. 4 (2019): 715. http://dx.doi.org/10.21883/ftt.2019.04.47418.319.

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AbstractImplantation of ions into amorphous silicon dioxide ( a -SiO_2) is widely used in microelectronics (mainly, using Si ions) and in the production of light-guiding components of optical fibers (Ge, P, B ions). All of these elements interact with the matrix oxygen, so the point defects that occur during implantation are not only the result of the displacement of the silicon–oxygen frame atoms from their equilibrium positions, but also reflect the specific chemical interaction in the material. In this study, inert argon ions were implanted into silicon dioxide plates, which excluded chemical reactions. It is demonstrated using photoluminescence (PL) that the highest concentration of point defects in the damaged silicate network belongs to neutral oxygen vacancies (NOVs). The concentration of these and some other induced defects increased with an increase in fluence up to 5 × 10^15 Ar^+/cm^2, and, with a further increase in dose, the concentration dropped due to annealing of defects in the layer heated by the introduction of ions. The NOV defects appeared in the photoluminescence spectrum in the form of doublets, that is, pairs of bands belonging to the same optical transition. The appearance of doublets is explained by the dependence of the optical transition energy on the localization of identical point defects in zones of different distortions of the matrix structure.
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43

Fradetal, Louis, Edwige Bano, Laurent Montes, Giovanni Atolini, and Valérie Stambouli. "Silicon Carbide Nanowire Devices for Label-Free Electrical DNA Detection." Materials Science Forum 821-823 (June 2015): 855–58. http://dx.doi.org/10.4028/www.scientific.net/msf.821-823.855.

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Silicon Carbide is a promising material to overtake the limitations of Si sensors used forin vivodetection. Here, two different nanodevices are presented. The first one is a SiC NWFET used for electrical detection of DNA molecules. The addition of DNA probe molecules increases the current by 25% and the hybridization with DNA targets increases by 80%. This confirms the efficiency of our sensor to detect DNA. The second one is a Metal Insulator Semicondutor capacitor composed of DNA functionalized SiC nanopillar arrays embedded in a sol-gel silicon dioxide matrix. Capacitance measurements show a singular response between 80 and 100 Hz which is attributed to the presence of DNA molecules.
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44

Laube, J., S. Gutsch, D. Hiller, M. Bruns, C. Kübel, C. Weiss, and M. Zacharias. "Formation of size controlled silicon nanocrystals in nitrogen free silicon dioxide matrix prepared by plasma enhanced chemical vapor deposition." Journal of Applied Physics 116, no. 22 (December 14, 2014): 223501. http://dx.doi.org/10.1063/1.4904053.

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45

Price, Charles T., Kenneth J. Koval, and Joshua R. Langford. "Silicon: A Review of Its Potential Role in the Prevention and Treatment of Postmenopausal Osteoporosis." International Journal of Endocrinology 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/316783.

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Physicians are aware of the benefits of calcium and vitamin D supplementation. However, additional nutritional components may also be important for bone health. There is a growing body of the scientific literature which recognizes that silicon plays an essential role in bone formation and maintenance. Silicon improves bone matrix quality and facilitates bone mineralization. Increased intake of bioavailable silicon has been associated with increased bone mineral density. Silicon supplementation in animals and humans has been shown to increase bone mineral density and improve bone strength. Dietary sources of bioavailable silicon include whole grains, cereals, beer, and some vegetables such as green beans. Silicon in the form of silica, or silicon dioxide (SiO2), is a common food additive but has limited intestinal absorption. More attention to this important mineral by the academic community may lead to improved nutrition, dietary supplements, and better understanding of the role of silicon in the management of postmenopausal osteoporosis.
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El Khoury, Diana, Richard Arinero, Jean-Charles Laurentie, Mikhaël Bechelany, Michel Ramonda, and Jérôme Castellon. "Electrostatic force microscopy for the accurate characterization of interphases in nanocomposites." Beilstein Journal of Nanotechnology 9 (December 7, 2018): 2999–3012. http://dx.doi.org/10.3762/bjnano.9.279.

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The unusual properties of nanocomposites are commonly explained by the structure of their interphase. Therefore, these nanoscale interphase regions need to be precisely characterized; however, the existing high resolution experimental methods have not been reliably adapted to this purpose. Electrostatic force microscopy (EFM) represents a promising technique to fulfill this objective, although no complete and accurate interphase study has been published to date and EFM signal interpretation is not straightforward. The aim of this work was to establish accurate EFM signal analysis methods to investigate interphases in nanodielectrics using three experimental protocols. Samples with well-known, controllable properties were designed and synthesized to electrostatically model nanodielectrics with the aim of “calibrating” the EFM technique for future interphase studies. EFM was demonstrated to be able to discriminate between alumina and silicon dioxide interphase layers of 50 and 100 nm thickness deposited over polystyrene spheres and different types of matrix materials. Consistent permittivity values were also deduced by comparison of experimental data and numerical simulations, as well as the interface state of silicone dioxide layers.
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Tizchang, Samira, Mahmood Sowti Khiabani, Reza Rezaei Mokarram, and Hamed Hamishehkar. "Bacterial cellulose nano crystal as hydrocolloid matrix in immobilized β-galactosidase onto silicon dioxide nanoparticles." LWT 123 (April 2020): 109091. http://dx.doi.org/10.1016/j.lwt.2020.109091.

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48

Grigor’eva, N. A., H. Eckerlebe, A. A. Eliseev, A. V. Lukashin, K. S. Napol’skii, M. Kraje, and S. V. Grigor’ev. "Structural and magnetic properties of the nanocomposite materials based on a mesoporous silicon dioxide matrix." Journal of Experimental and Theoretical Physics 124, no. 3 (March 2017): 476–92. http://dx.doi.org/10.1134/s106377611702011x.

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Zhou, M., L. Zhang, H. Lu, L. Shao, and M. Chen. "Reaction of silicon dioxide with water: a matrix isolation infrared and density functional theoretical study." Journal of Molecular Structure 605, no. 2-3 (March 2002): 249–54. http://dx.doi.org/10.1016/s0022-2860(01)00767-0.

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Azmi, Syarinie, Ramli Arifin, and Sib Krishna Ghoshal. "Improved Hydrophobicity of Silicon Dioxide Integrated Zinc-Tellurite Glass Surface." Solid State Phenomena 268 (October 2017): 87–91. http://dx.doi.org/10.4028/www.scientific.net/ssp.268.87.

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Economically viable and maintenance free glass surfaces with improved hydrophobicity are highly demanding in the recent nanotechnology era. Deposition of pollutants and dirt on glass surface that not only causes visual obscurity but also damages the cultural heritages are still to be researched intensely. It is documented that excellent hydrophobic surfaces (with contact angle greater than 90o) can be achieved by controlling the surface wettability, where liquid droplets remain spherical on such surfaces. Selection of materials and the preparation method play a significant role towards such accomplishments. Stirred by this idea, we explored the feasibility of fabricating super-hydrophobic tellurite glass systems by facilely varying the compositions of different constituents. Highly transparent and thermally stable ternary tellurite glass system with chemical composition of (80-x)TeO2 – xSiO2 – 20ZnO, where x = 0.00 to 0.20 mol% are synthesized via conventional melt-quenching method. Samples are characterized using Atomic Force Microscopy (AFM) and contact angle measurements. The impact of SiO2 concentrations variation on the surface roughness, surface energy, and hydrophobic properties are inspected. Glass surface roughness as much as 9.885 nm is attained. The optimal value of water contact angle is discerned to be 101.02° for 0.1 mol% of SiO2 incorporation into the amorphous tellurite host matrix. Besides, the surface energy revealed an inverse proportionality to the water contact angle. This achieved contact angle (greater than 90°) makes this hydrophobic glass surface beneficial for diverse applications. It is established that the present glass composition may be prospective for the development of super-hydrophobic surfaces.
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