Relevant bibliographies by topics / Titania surface

Academic literature on the topic 'Titania surface'

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Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Titania surface"

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Luo, Yong Gang, Linda Zou, and Eric Hu. "A Comparative Study on Preparation of TiO2 Pellets as Photocatalysts Based on Different Precursors." Materials Science Forum 475-479 (January 2005): 4165–70. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.4165.

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The porous TiO2 pellets were prepared based on pigment grade titaina, P25 titania powder and titanium(IV) butoxide. The characterization was done with X-Ray diffraction, scanning electron microscopy and BET measurements. The result shows that TiO2 pellets by using titanium(IV) butoxide with some addictive have the best surface porosity, with specific surface area of 196.9m2/g. For pigment grade titania and P25 titania powder, it is still effective to enhance the surface area after reassembling. The surface area increased from 11.6 to 29.2 m2/g for pigment grade titania and from 50 to 84.4 m2/g for P25 titania powder. Furthermore, it has been investigated on how to optimize and get the highest surface area by controlling the sintering temperature, reaction temperature, pH of solution, and the amount of alcohol and addictive of surfactant during preparation. The experimental photocatalytic degradation of acetone and toluene was performed using titania pellets made from P25 titania powder.
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Mitoraj, Dariusz, and Horst Kisch. "Surface Modified Titania Visible Light Photocatalyst Powders." Solid State Phenomena 162 (June 2010): 49–75. http://dx.doi.org/10.4028/www.scientific.net/ssp.162.49.

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Titanium dioxide has received great attention both in fundamental and applied photocatalysis due to its low cost, non-toxicity, and stability against photocorrosion [ - ]. Unfortunately it can utilize only the very small UV part (about 3%) of solar light arriving at the earth surface. However, also the visible part (λ > 400 nm) may induce photocatalysis if titania is modified by transition or main group elements. Accordingly, many publications appeared in the last 20 years dealing with the problem of sensitizing titania for visible light photooxidation reactions. This may be achieved by doping, which means substitution of lattice ions, and by surface modification. In many cases authors not clearly differentiate between these two possibilities and so called doped titania quite often is a surface modified material. The latter is easily prepared by heating titania or its precursor compounds like titanium hydroxide in the presence of a modifier at temperatures in the range of 100 – 500 °C. In the following we summarize our work in this field using inorganic and organic sensitizers.
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Obata, Akiko, Tianshu Zhai, and Toshihiro Kasuga. "Apatite-forming ability on titanium surface modified by hydrothermal treatment and ultraviolet irradiation." Journal of Materials Research 23, no. 12 (December 2008): 3169–75. http://dx.doi.org/10.1557/jmr.2008.0385.

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Titania coatings with various morphologies were formed on titanium surfaces by hydrothermal treatment using a dilute alkaline solution and evaluated in their hydroxyapatite (HA)-forming abilities in simulated body fluid (1.5SBF) under ultraviolet (UV) irradiation. The HA formation on the titania coating in 1.5SBF was enhanced by UV irradiation. The amount of phosphate groups adsorbed on the titania, after soaking in 1.5SBF for 24 h under UV irradiation, was estimated to be larger than that of calcium ions, whereas that of calcium ions on the titania, after soaking without UV irradiation, was larger than that of phosphate groups. It was suggested that the titania generated much basic Ti–OH groups at its surface by UV irradiation and subsequently adsorbed phosphate groups, such as H2PO4−, resulting in the formation of a new surface rich in the amount of the groups, which eventually enhanced the HA formation in 1.5SBF.
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Harris, M. R., and G. Whitaker. "Surface properties of hydrolysed titania. I. Titania prepared from titanium tetra-alkoxides." Journal of Applied Chemistry 12, no. 11 (May 4, 2007): 490–94. http://dx.doi.org/10.1002/jctb.5010121105.

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Harris, M. R., and G. Whitaker. "Surface properties of hydrolysed titania. III. Titania prepared from titanium chloro-alkoxides." Journal of Applied Chemistry 13, no. 8 (May 4, 2007): 348–55. http://dx.doi.org/10.1002/jctb.5010130805.

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Ruan, Danping, Chunyun Wu, Sinan Deng, Yu Zhang, and Guoling Guan. "The Anatase Phase of Nanotopography Titania with Higher Roughness Has Better Biocompatibility in Osteoblast Cell Morphology and Proliferation." BioMed Research International 2020 (September 22, 2020): 1–8. http://dx.doi.org/10.1155/2020/8032718.

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Previous studies have concluded that surface-modified titanium oxide (titania, TiO2) surface properties promote osteoblast cell morphology and proliferation. To screen a suitable structured titania coating with the best biocompatibility to be used in dental implants, five titania films (two amorphous, one rutile, and two anatases) with different surfaces were successfully synthesized on polished titanium by radio frequency (RF) magnetron sputtering. We applied atomic force microscopy (AFM) and X-ray diffraction (XRD) to depict the formulations. Furthermore, MC3T3-E1, the mouse osteoblast precursor cell, was used to assess cell proliferation and observe morphologic changes at the film surface. The data indicated that the overall number of MC3T3-E1 cells on anatase films was significantly higher as compared with cells on rutile and amorphous films. Meanwhile, the actin filaments of the cells grown on the anatase phase films were well defined and fully spread. In addition, the film with higher roughness had enhanced biocompatibility than that with lower roughness. The results showed that the crystal phase and titania coated roughness had a greater influence on the biocompatibility of nanostructured titania film. The higher the roughness of the anatase phase was, the better bioactivity for the morphology and proliferation of osteoblast. This is a good surface-modified biological material and may have a good application prospect in dental implants.
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Shrestha, Sabita, and Chong Yun Park. "Deposition of Titania Nanoparticles on the Surface of Acid Treated Multiwalled Carbon Nanotubes." Advanced Materials Research 117 (June 2010): 27–32. http://dx.doi.org/10.4028/www.scientific.net/amr.117.27.

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Titanium dioxide (Titania, TiO2) nanoparticles have been deposited on the surface of acid treated multi-walled carbon nanotubes (MWCNTs) by simple chemical route. The resultant TiO2/MWCNTs composites were characterized by different techniques. The oxidation of MWCNTs and presence of titania nanoparticles on the surface of MWCNTs is confirmed by transmission electron microscopy, energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. TEM image shows the size of titania nanoparticles are around 5 nm. Raman spectroscopy showed the oxidation and functionalization of nanotubes. The TGA curve showed decrease in thermal decomposition temperature of MWCNTs after oxidation and attachment with titania nanoparticles.
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van Grieken, Rafael, José Aguado, María José López-Muñoz, and Javier Marugán. "Sol-Gel Titania and Titania-Silica Mixed Oxides Photocatalysts." Solid State Phenomena 162 (June 2010): 221–38. http://dx.doi.org/10.4028/www.scientific.net/ssp.162.221.

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This paper presents a review of the work published by the authors on the synthesis, characterization and evaluation of the photocatalytic activity of TiO2/SiO2 materials. The use of titania-silica mixed oxides photocatalysts is proposed basically as a process improvement to overcome the difficulties of recovering titania from the slurries after the photocatalytic treatment of contaminated waters. To understand the mechanism governing the photocatalytic activity of these materials, several titania-silica photocatalysts have been prepared through a sol-gel method that allows controlling the main variables to obtain materials with different textural properties, degree of titania incorporation, dispersion of the photoactive phase and crystallinity of titanium dioxide. The samples have been characterized in depth, looking for correlations between the main physicochemical properties (TiO2 crystallite size, band gap energy and titania surface area) and the activity shown in the photocatalytic oxidation of cyanide, selected as model pollutant. The results suggest that the photocatalytic activity is strongly influenced by the quality of the titania crystal network, which in turn is improved by the use of a hydrothermal crystallization procedure. Additionally, the evaluation of the fraction of the total surface area corresponding to titania is mandatory for comparing the catalytic activity of different materials in processes in which titanium dioxide is the only phase catalytically active and silica behaves as an inert support.
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Xie, Yi Bing, Li Min Zhou, and Hai Tao Huang. "Biosensor Application of Enzyme-Functionalized Titania/Titanium Composite." Key Engineering Materials 334-335 (March 2007): 645–48. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.645.

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Highly-ordered titania nanotube array has been fabricated by a potentiostatic anodization process in acidic fluoride electrolyte. Calcination at high temperature is followed to achieve crystallization from amorphous to anatase phase. The approach of embedding bioactive enzymes inside titania tubule channels has been applied for bioactivation modification of titania/titanium. The electropolymerization process is applied by using conductive pyrrole monomer to achieve surface immobilization of enzymes to improve interfacial connection. Characterizations including field emission scanning electron microscopy, nano-indentation and linear sweep voltammetry measurements have been performed to fully evaluate the surface morphology, nanomechanical and electrochemical properties of this composite. Molecule detection application has been investigated by applying such an enzyme-titania/titanium composite.
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Shayganpour, Amirreza, Alberto Rebaudi, Pierpaolo Cortella, Alberto Diaspro, and Marco Salerno. "Electrochemical coating of dental implants with anodic porous titania for enhanced osteointegration." Beilstein Journal of Nanotechnology 6 (November 20, 2015): 2183–92. http://dx.doi.org/10.3762/bjnano.6.224.

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Clinical long-term osteointegration of titanium-based biomedical devices is the main goal for both dental and orthopedical implants. Both the surface morphology and the possible functionalization of the implant surface are important points. In the last decade, following the success of nanostructured anodic porous alumina, anodic porous titania has also attracted the interest of academic researchers. This material, investigated mainly for its photocatalytic properties and for applications in solar cells, is usually obtained from the anodization of ultrapure titanium. We anodized dental implants made of commercial grade titanium under different experimental conditions and characterized the resulting surface morphology with scanning electron microscopy equipped with an energy dispersive spectrometer. The appearance of nanopores on these implants confirm that anodic porous titania can be obtained not only on ultrapure and flat titanium but also as a conformal coating on curved surfaces of real objects made of industrial titanium alloys. Raman spectroscopy showed that the titania phase obtained is anatase. Furthermore, it was demonstrated that by carrying out the anodization in the presence of electrolyte additives such as magnesium, these can be incorporated into the porous coating. The proposed method for the surface nanostructuring of biomedical implants should allow for integration of conventional microscale treatments such as sandblasting with additive nanoscale patterning. Additional advantages are provided by this material when considering the possible loading of bioactive drugs in the porous cavities.
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Dissertations / Theses on the topic "Titania surface"

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Papageorgiou, Anthoula Chrysa. "Surface studies of titania related nanostructures." Thesis, University College London (University of London), 2007. http://discovery.ucl.ac.uk/1445001/.

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In this thesis, surface sensitive techniques have been employed to investigate the surface chemistry of TiC>2. A bottom-up approach was used to grow ultra-thin films of rutile TiO2(110) on Ni(110). The surface structure of this system was probed using scanning tunnelling microscopy (STM) and low energy electron diffraction (LEED), whereas the electronic structure was characterised with soft X-ray photoelectron spectroscopy (SXPS). SXPS was also used to investigate the reactivity of this system towards water. While optimising the conditions for the growth of the desired titania phase, the growth of other structures commonly found in reduced native TiC>2 crystals were apparent from STM and LEED observations. The formation of 1x2 reconstructed TiO2(110) and crystallographic shear planes are reported. These phases are assigned by comparison with previous studies of analogous phases on the native rutile TiC>2(110) surface. STM was also used to monitor chemical reactions on native TiO2(110) surfaces. The reaction of surface bridging hydroxyl groups with molecular oxygen at room temperature was imaged directly. After exposure to O2, nearly all bridging hydroxyl groups are consumed, and new, mobile adsorbates appear with a range of apparent heights. With the support of calculations performed by Hofer's group in the University of Liverpool and Fisher's group in UCL, the adsorbates left on the surface after the reaction are assigned to neutral and charged oxygen adatoms as well as terminal hydroxyls. Finally, the surface local density of states of TiO2(110) were measured using scanning tunnelling spectroscopy. Energetically localised states are found at sample biases of +0.2 V, 0.7 V and 1.9 V. Additionally, a surface state at 1.9 V is localised spatially at two adjacent titanium five-fold atoms near to the positions of surface oxygen vacancies.
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Ragazzon, Davide. "Titania Nanoscale Films and Surfaces : Surface Science Investigation of Structure and Properties." Doctoral thesis, Uppsala universitet, Molekyl- och kondenserade materiens fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-224124.

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This thesis presents surface science studies, investigating several aspects of titanium dioxide at the atomic scale. The greater part of this work is devoted to the preparation by chemical vapor deposition (CVD) of titanium(IV) tetraisopropoxide (TTIP) of ultrathin TiO2 or TiOx films on Au(111). Four ordered structures were growth and characterized. It was also demonstrated how the morphology of the film (wetting film vs island) can be tailored. The acquired knowledge about the CVD process was exploited to load nano porous gold with titania, enhancing its catalytic activity. The reactivity towards water adsorption of the titania structures on Au(111) was also investigated. Finally, part of this work concerned the studying of the behavior of water on the stoichiometric rutile TiO2(110) surface, combining the experiments with density-functional theory (DFT) calculations and (kinetic) Monte Carlo simulations. The main experimental techniques used in this work are low-energy electron diffraction (LEED), scanning tunneling microscopy (STM) and photoelectron spectroscopy (PES).
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Rudkin, Christopher Julian. "Surface organometallic chemistry of rhodium and palladium on titania." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242666.

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Stone, Peter John. "STM studies of the structure and reactivity of oxide surfaces and model catalysts." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340075.

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Burnaby, Daryl. "The surface organometallic chemistry of rhodium and palladium supported on inorganic oxides." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327360.

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Torun, Engin. "Electronic Properties Of Dye Molecules Adsorbed On Anatase-titania Surface For Solar Cell Applications." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610846/index.pdf.

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Wide band gap metal oxides have recently become one of the most investigated materials in surface science. Among these metal oxides especially TiO2 attracts great interest, because of its wide range applications, low cost, biocompatibility and ease of analysis by all experimental techniques. The usage of TiO2 as a component in solar cell technology is one of the most investigated applications of TiO2 . The wide band gap of TiO2 renders it inecient for isolated use in solar cells. TiO2 surface are therefore coated with a dye in order to increase eciency. This type of solar cells are called dye sensitized solar cells . The eciency of dye sensitized solar cells is directly related with the absorbed light portion of the entire solar spectrum by the dye molecule. Inspite of the early dyes, recent dye molcules, which are called wider wavelength response dye molecules, can absorb a larger portion of entire solar spectrum. Thus, the eciency of dye sensitized solar cells is increased by a considerably amount. In this thesis the electronic structure of organic rings, which are the fundamental components of the dye molecules, adsorbed on anatase (001) surface is analyzed using density functionaltheory. The main goal is to obtain a trend in the electronic structure of the system as a function of increasing ring number. Electronic structure analysis is conducted through band structure and density of states calculations. Results are presented and discussed in the framework of dye sensitized solar cells theory.
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Jensen, Stephen C. "The Role of Interstitials and Surface Defects on Oxidation and Reduction Reactions on Titania." Thesis, Harvard University, 2013. http://dissertations.umi.com/gsas.harvard:10768.

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This thesis focuses on understanding the influence of defect sites in titanium dioxide that drive many types of thermal and photochemical reactions. Two of the most common defects in vacuum are titanium interstitials and oxygen vacancies. Molecular oxygen fills oxygen vacancies and creates oxygen adatoms. We broadly investigate reduction and oxidation reactions of oxygenates driven by titanium interstitials and oxygen adatoms. First, we focus on the thermal chemistry of oxygen adatoms with butyrophenone and find that it reacts with the adatoms to form a strongly bound complex. The large difference in mobility between complexed and uncomplexed butyrophenone, and the corrugated nature of the \(TiO_2(110)\) surface plane, allows a confined one-dimensional gas to persist, which is characterized by scanning tunneling microscopy (STM). Next, we focus on the reductive coupling of benzaldehyde to stilbene that is driven by titanium interstitials. The diolate intermediate of the reaction is identified by STM and the thermodynamic preference of molecular oxygen to interact with titanium interstitials is exploited to selectively reverse the benzaldehyde diolate intermediates. Additionally, we investigate the photo-oxidative coupling of methanol to methyl formate, the photo-oxidation of butyrophenone and the photo-stability of benzoate. Finally, we identify a water splitting mechanism on reduced titania that creates oxygen adatoms. We demonstrate that the photo-generated oxygen adatoms thermally react with titanium interstitials to make TiOx islands and drive the photo-oxidation of formaldehyde and butyrophenone. Methods used include temperature programmed reaction spectroscopy, STM, and density functional theory.
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Yetisemiyen, Pelin. "Low Temperature Photocatalytic Oxidation Of Carbon Monoxide Over Palladium Doped Titania Catalysts." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612466/index.pdf.

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The room temperature photocatalytic oxidation of carbon monoxide in excess air was examined over silica/titania and 0.1%palladium/silica/titania catalysts under UV irradiation. The experiments were conducted in batch re-circulated reactor with the initial 1000 ppm carbon monoxide in air and 0.5 g catalyst charge and the conversion of carbon monoxide to carbon dioxide was followed by FT-IR spectro-photometer. The change in gas composition in dark and under 36 Watts of UV irradiation exposed to a catalyst area of 12.4 centimeter square indicated both adsorption of carbon monoxide and conversion of carbon monoxide to carbon dioxide over the catalyst samples. The effect of catalyst composition (silica/titania) ratio and the presence of palladium oxide were investigated. The catalyst samples were synthesized by sol-gel technique and all samples were hydrothermally treated before calcination in air. The catalyst samples were characterized by XRD and nitrogen adsorption techniques. XRD results indicated that titania is comprised of pure anatase phase and palladium oxide preferantially dispersed over titania. BET surface area of the samples were observed to increase with silica loading and the BJH results showed isotherms of Type V v with H2 hysteresis loops. The highest carbon monoxide adsorption rate constant was achieved with pure silica with the highest surface area. Photocatalytic activity measurements indicated that carbon monoxide in excess air can be successfully oxidized at room temperature over the titania photocatalyts. Higher physisorption was observed over higher silica containing samples and higher oxidation activity was observed with increasing titania/silica ratio. The optimum titania/silica ratio was determined by the titania content and surface area of catalyst. The activity tests were also indicated that the addition of palladium oxide phase synergistically increased the adsorption and oxidation activity of the catalysts.
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Marszewski, Michal. "Development of highly porous crystalline titania photocatalysts." Kent State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=kent1476281107453411.

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Wang, Xiaodan [Verfasser]. "Tuning the Photoelectrochemical Functionality of CoreShell H-doped Titania Nanorods by Hydrogen Surface Engineering / Xiaodan Wang." München : Verlag Dr. Hut, 2018. http://d-nb.info/116125045X/34.

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Books on the topic "Titania surface"

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Vadiraj, Aravind. Surface modified biochemical titanium alloys. Hauppauge, N.Y: Nova Science Publishers, 2009.

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Vadiraj, Aravind. Surface modified biochemical titanium alloys. New York: Nova Science Publishers, 2010.

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Vadiraj, Aravind. Surface modified biochemical titanium alloys. New York: Nova Science Publishers, 2010.

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Lanagan, John. Plasma surface engineering of titanium alloys. Birmingham: University of Birmingham, 1988.

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Musil, Jindřich. Tenké vrstvy nitridu titanu. Praha: Academia, 1989.

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Rezai-Tabrizi, M. R. Surface treatments of titanium and its alloys. Manchester: UMIST, 1989.

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(Ramaswamy), Narayanan R., and Rautray Tapash R, eds. Surface modification of titanium for biomaterial applications. New York: Nova Science Publishers, 2010.

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Salehi, Mehdi. Tribological characterisation of surface engineered titanium alloys. Birmingham: University ofBirmingham, 1990.

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Kim, Kyo-Han. Surface modification of titanium for biomaterial applications. Hauppauge, N.Y: Nova Science Publishers, 2009.

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Symposium, on Surface Performance of Titanium (1996 Cincinnati Ohio). Surface performance of titanium: Proceedings of a Symposium on Surface Performance of Titanium sponsored by the Titanium Committee of TMS, held at the 1996 Fall TMS Meeting in Cincinnati, Ohio, October 7-9, 1996. Warrendale, Pa: Minerals, Metals & Materials Society, 1996.

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Book chapters on the topic "Titania surface"

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Furlong, D. Neil. "Surface Chemistry of Silica Coatings of Titania." In Advances in Chemistry, 535–59. Washington DC: American Chemical Society, 1994. http://dx.doi.org/10.1021/ba-1994-0234.ch027.

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Feng, Bo, Jie Weng, Yu Liang, Shu Xin Qu, Jin Wang, and Xiong Lu. "Fabrication of Porous Titania and Porous Calcium Phosphate Coatings on Titanium Surface." In Key Engineering Materials, 529–32. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-422-7.529.

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Farrokhpay, S., G. Morris, D. Fornasiero, and P. Self. "Role of polymeric dispersant functional groups in the dispersion behaviour of titania pigment particles." In Surface and Colloid Science, 216–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/b97077.

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Meier, Douglas C., Xiaofeng Lai, and D. Wayne Goodman. "Surface Chemistry of Model Oxide-Supported Metal Catalysts: An Overview of Gold on Titania." In Surface Chemistry and Catalysis, 147–89. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4757-6637-0_7.

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Muhd Julkapli, Nurhidayatullaili, and Samira Bagheri. "Surface Modification of Titania/Gold Nanoparticles for Photocatalytic Applications." In Nanocatalysts in Environmental Applications, 25–35. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-69557-0_2.

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Simi, V. S., L. Mohan, and N. Rajendran. "Tailoring the Surface Functionalities of Titania Nanotubes for Biomedical Applications." In Nanomaterials and Their Biomedical Applications, 513–52. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6252-9_17.

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Daoud, Walid A., and John H. Xin. "Surface Characterization of Low-Temperature Processed Titania Coatings Produced on Cotton Fabrics." In Ceramic Transactions Series, 47–52. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118407141.ch5.

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Hardcastle, Franklin D., Jih-Mirn Jehng, Chung-Ku Chen, and Israel E. Wachs. "Raman Spectroscopy of Surface Rhenium Oxide on Alumina, Silica, Titania, Niobia, and Magnesia." In Olefin Metathesis and Polymerization Catalysts, 543. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-011-3328-9_24.

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Kosmulski, M., P. Dahlsten, P. Próchniak, and J. B. Rosenholm. "Surface Charge and Conductance in Dispersions of Titania in Nonaqueous and Mixed Solvents." In Trends in Colloid and Interface Science XXIV, 55–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19038-4_10.

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Sato, Michiko, Elliott B. Slamovich, and Thomas J. Webster. "Increased Surface Area and Roughness Promotes Osteoblast Adhesion on Hydroxyapatite/Titania/Plga Composite Coatings." In Ceramic Transactions Series, 231–37. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118407158.ch25.

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Conference papers on the topic "Titania surface"

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Choi, Wonyong. "Photocatalytic hydrogen production using surface-modified titania nanoparticles." In Solar Energy + Applications, edited by Jinghua Guo. SPIE, 2007. http://dx.doi.org/10.1117/12.737292.

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Nenova, Zvezditza, Nedyu Nedev, Stephan Kozhukharov, and Toshko Nenov. "Humidity Sensors Based on Doped Titania-Silica Surface Layers." In 2018 20th International Symposium on Electrical Apparatus and Technologies (SIELA). IEEE, 2018. http://dx.doi.org/10.1109/siela.2018.8447168.

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Fan, Simiao, Wei Tong, Jun Luo, and Fei Duan. "NUCLEATE POOL BOILING HEAT TRANSFER ON A TITANIA NANOTUBE-COATED SURFACE." In International Heat Transfer Conference 16. Connecticut: Begellhouse, 2018. http://dx.doi.org/10.1615/ihtc16.bae.023586.

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Northen, M. T., and K. L. Turner. "Single High Aspect Ratio Pillar Support Structures: Multi-Scale Chip Integrated Conformal Structures." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61992.

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This paper describes the realization of the integration of micro and nanoscale conformal structures. A new dry processing technique is used to create structures supported by a single high aspect ratio pillar support (SHARPS), creating submicron single crystal silicon features, with tight geometric control, attached to much larger (10–200μm) silicon dioxide platforms. The platforms have lithographically defined two dimensional shapes. The curvature of the platforms is adjusted through metal deposition and subsequent processing. The flexibility of the structures allows them to conform to meso and microscale roughness. To account for nanoscale conformance stochastic arrays of vertically aligned titania nanofibers are created on the platform surface. The application of the system as a passive microadhesive is investigated using a nanoindenter. Results show that the titania nano fiber surface offers significant increase in adhesion over smooth silicon dioxide or titanium surfaces. However when used in conjunction with the SHARPS structures the fibers are too stiff to allow for conformance to the surface prior to larger scale conformation, thus the combination does not increase the overall adhesion.
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Lorturn, P., N. Viriya-empikul, A. Soottitantawat, G. Tumcharern, W. Tanthapanichakoon, and T. Charinpanitkul. "A Two-Step Hydrothermal Method for Preparing Titania Nanostructure with High Surface Area." In 2008 8th IEEE Conference on Nanotechnology (NANO). IEEE, 2008. http://dx.doi.org/10.1109/nano.2008.231.

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Gazzola, Enrico, Michela Cittadini, Laura Brigo, Giovanna Brusatin, Massimo Guglielmi, Filippo Romanato, and Alessandro Martucci. "Grating-coupled surface plasmon resonance gas sensing based on titania anatase nanoporous films." In SPIE Nanoscience + Engineering, edited by Allan D. Boardman and Din Ping Tsai. SPIE, 2015. http://dx.doi.org/10.1117/12.2186662.

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Ibrahim, Ahmed, and Christopher C. Berndt. "Effect of Nanostructured Thermal Spray Coatings on Fatigue Behavior of Low-Carbon Steel." In ASME 2008 2nd Multifunctional Nanocomposites and Nanomaterials International Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/mn2008-47025.

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Nanostructured and conventional titania (TiO2) coatings were thermally sprayed using air plasma spray (APS) and high velocity oxy-fuel (HVOF) processes. The fatigue and mechanical properties of these coatings were investigated. The fatigue strength of coatings deposited onto low-carbon steel showed that the nanostructured titania coated specimens exhibited significantly higher fatigue strength compared to the conventionally sprayed titania. SEM analysis of fracture surfaces revealed valuable information regarding the influence of these coatings on the performance of the coated component. Analysis of surface deformation around Vickers indentations was carried out. This investigation gives new understanding to the nature of fatigue and deformation of these coatings.
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Mansour, Diaa-Eldin A., Hanaa M. Ahmed, and Alaa M. Salman. "The Effect of Surface Modification of Titania Nanoparticles on the Dielectric Properties of Nanofluids." In 2019 21st International Middle East Power Systems Conference (MEPCON). IEEE, 2019. http://dx.doi.org/10.1109/mepcon47431.2019.9007971.

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Dantal, B. R., A. Saigal, and M. A. Zimmerman. "Effect of Size and Spatial Distribution of Titania Pigments in Injection Molded Parts on Surface Reflectance." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43516.

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Titania pigments are used in molding compounds as a means to improve opacity by increasing the scattering efficiency of the medium and to develop new applications such as liquid crystal displays (LCD) and light emitting diodes (LED). The characteristics of the injection molded products are a function of molding parameters such as gate location and shear rate. In this study, quantitative measures of the particle distribution of titania pigments in polymer composites have been experimentally determined, including area fraction, average diameter, and diameter volume. A 2 × 3 × 3 ANOVA test has been conducted to assess the statistical significance of these parameters. This study deals with the size and spatial distribution of the particles. The important parameters calculated based on the Feret’s diameter are diameter-volume (dv), diameter-number (dn), and area fraction (AF). The term diameter-volume (dv) has been used to give greater significance to the large particles and thus ‘large’ indicates more and/or larger particles. The parameters have been calculated by using Image-J image processing software. MINITAB has been used to assess the statistical significance of these parameters. The results show that titania particles are not uniformly distributed within the final molded parts and they vary along the molding (longitudinal) and transverse directions of plastic flow. The difference of pigment area fraction and diameter volume at different locations within a final molded part has a significant effect on the percentage reflectance of the surface.
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Mazyck, David, Ameena Khan, Anna Casasus, and David Baun. "Photocatalytic and Adsorptive System for Odor Control in Lunar Surface Systems using Silica-Titania Composites." In 42nd International Conference on Environmental Systems. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-3588.

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Reports on the topic "Titania surface"

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Jervis, T. R., T. G. Zocco, J. R. Tesmer, and J. P. Hirvonen. Tribology and surface mechanical properties of excimer laser nitrided titanium. Office of Scientific and Technical Information (OSTI), November 1994. http://dx.doi.org/10.2172/10194306.

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Mizuno, Yoshiyuki. Temperature Dependence of Oxide Decomposition on Titanium Surfaces in UHV. Office of Scientific and Technical Information (OSTI), November 2001. http://dx.doi.org/10.2172/798917.

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Brown, J. R., and L. E. Galbraith. Characterization of titanium supported precious metal films by direct surface spectroscopy methods. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/304454.

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Bedrossian, P. J. Surface topographies of two-year coupons of titanium grade 16 from long-term testing. Office of Scientific and Technical Information (OSTI), December 1999. http://dx.doi.org/10.2172/15005559.

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Blau, Peter J., Kevin M. Cooley, Melanie J. Kirkham, and Dinesh G. Bansal. Investigation of Surface Treatments to Improve the Friction and Wear of Titanium Alloys for Diesel Engine Components. Office of Scientific and Technical Information (OSTI), September 2012. http://dx.doi.org/10.2172/1148409.

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Man, Chi-Sing, and Tongguang Zhai. Residual Stress, Micro- and Macrotexture in Surface-Enhanced Titanium Alloys: Their Nondestructive Inspection and Effects on High-Cycle Fatigue Properties. Fort Belvoir, VA: Defense Technical Information Center, May 2006. http://dx.doi.org/10.21236/ada448675.

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