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stability of anodic aluminum oxide membranes with nanopores

stability of anodic aluminum oxide membranes with nanopores

stability of anodic aluminum oxide membranes with nanopores

... 440–444www.elsevier.com/locate/pla Stability of anodic aluminum oxide membranes with nanopores S.G. Yanga,∗,T.Lia,L.S.Huanga,T.Tanga, J.R. Zhanga,B.X.Gua,Y.W.Dua,S.Z. Shib,Y.N.LubaNational Laboratory of ... September 2003; accepted 22 September 2003Communicated by R. WuAbstractThe anodic aluminum oxide membranes (AAOMs) with nanopores, produced by electrochemical etching method inoxalic/sulphuric/phosphoric ... template method, anodic aluminum oxide membranes (AAOMs), prepared by electrochemicaletching aluminum foil in oxalic/sulphuric/phosphoricacid solution are the most popular membranes used*Corresponding...
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formation of anodic aluminum oxide

formation of anodic aluminum oxide

... hierarchicalsystem with controllable morphology and composition.KEYWORDS Anodic aluminum oxide, serrated channel, plastic deformationHighly ordered porous anodic aluminum oxide (AAO)has been ... self-assemble porous anodic aluminum oxide membranes with serratednanochannels by anodizing in phosphoric acid solution. Due to high field conduction and anionic incorporation, an increase of anodizingvoltage ... Formation of Anodic Aluminum Oxide with Serrated NanochannelsDongdong Li,†,‡,|Liang Zhao,§,|Chuanhai Jiang,†and Jia G. Lu*,‡†School of Materials Science and Engineering,...
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control of the anodic aluminum oxide barrier layer opening

control of the anodic aluminum oxide barrier layer opening

... applications.Experimental Section Anodic aluminum oxide (AAO) membranes with hexagonallyordered arraysof nanopores wereprepared byatwo-step anodizationprocedure as described previously.1 Aluminum sheets (Alfa ... ordered arrays of nanopores was then obtained byselectively etching away the unreacted Al in a saturated HgCl2solution.A U-shapedaluminum oxidelayeror barrierlayerwith athickness of 30-40 nm ... of the surface structure and uneven diffusion of acidinto the nanopores. 26The membrane was then immersed in 200 mL of 5.00wt% phosphoric acidat30.0 °C fordifferentperiods of time,rinsed with...
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measurement of the pore sizes for anodic aluminum oxide (aao)

measurement of the pore sizes for anodic aluminum oxide (aao)

... Measurement of the pore sizes for anodic aluminum oxide (AAO)D.H. Choia, P.S. Leeb, W. Hwanga,*, K.H. Leeb, H.C. ParkaaDepartment of Mechanical Engineering, Pohang University of Science ... 2006AbstractA new method for the measurement of pore size of the porous-type anodic aluminum oxide (AAO) using atomic force microscopy(AFM) is proposed. The measurement of the pore size by AFM makes no ... 06.30.Bp; 07.79.LhKeywords: Anodic aluminum oxide; Atomic force microscopy; Pore size; Pore widening; Mechanical packing stress1. IntroductionIn recent years, anodic aluminum oxide (AAO) film hasattracted...
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fabrication and characterization of anodic titanium oxide nanotube arrays of controlled

fabrication and characterization of anodic titanium oxide nanotube arrays of controlled

... First, the efficiency of charge collection of NT films has been proved to be muchbetter than that of NP films because of the 1D nature of theformer with a much smaller rate of charge recombination;16thisintrinsic ... removed with ultrasonic vibration of the ATO films in deionized watercontaining a small proportion of Al2O3particles of average size300 nm. Parts a and b of Figure 3 show top and side views of SEM ... anodize Ti foil with anodization for variousdurations. Figure 4 shows the variation of length of TiO2NTas a function of period of anodization (the corresponding SEMimages of each datum showing...
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formation, microstructures and crystallization of anodic titanium oxide

formation, microstructures and crystallization of anodic titanium oxide

... formation of the oxide/ hydroxide layer. The hydroxide at the oxide/ hydroxide interface decomposes by losing protonscontinuously to form titanium oxide. The thicknesses of both the oxide and hydroxide ... electrolyte /oxide interface to the oxide/ Ti interface to form Ti oxide or Tihydroxide, the amount of oxide anions is just enough to forma new layer at the pore bottom and the thickness of the oxide layer ... respectively.3.5 Porosity of anodic titanium oxide In the same way as the formation of AAO, in the formationprocess of ATO we assume all the oxide anions from dissolution of titanium oxide will contribute...
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synthesis of bundled tungsten oxide nanowires with controllable morphology

synthesis of bundled tungsten oxide nanowires with controllable morphology

... EDX profile of bundlessynthesized at concentration of 0.007M.Fig. 2 – (a) TEM and (b) HRTEM images of bundled tungsten oxide nanowires synthesized at a concentration of 0.003 M; (c) TEM of bundled ... W18O49 with the strongestintensity of (010) plane, indicating that the growth direction of nanowires remained unchanged with increasing concentration.It has been reported that the concentration of ... lowersupersaturation of the tungsten source, promoting the growth of tungsten oxide nanowires [11]. At higher concentration, thehighly saturated WCl6could prohibit the growth of tungsten oxide nanowires...
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Báo cáo khoa học: Interaction of the P-type cardiotoxin with phospholipid membranes pptx

Báo cáo khoa học: Interaction of the P-type cardiotoxin with phospholipid membranes pptx

... membranes composed of anionic [18] or zwitterionic phospholipids [13] has beenshown. An analysis of redistribution of the intensities withinpowder type31P-NMR spectra of MLV as a result of ... CTs interact with membranes by acombination of electrostatic and hydrophobic forces [5]. Inthis respect the interaction of CTII with negatively charged membranes is similar to that of other basic ... variation of 31P-NMR spectra of Pam2Gro-PGro in the presence of CTII at L/P ratio of 14:1isshowninFig.5.The decomposition of the spectra (see example in Fig. 5)gives the amount of the isotropic...
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gas - sensing properties of tin oxide doped with metal oxides and carbon

gas - sensing properties of tin oxide doped with metal oxides and carbon

... function of operating temperature of the PtO2-doped SnO2sensors with varying PtO2doping content.Please cite this article in press as: N. Van Hieu, et al., Gas-sensing properties of tin oxide ... Thestepwise decrease of theelectrical resistance of the film is very consistent with an increas-ing amount of ethanol oxidation. Greater ethanol oxidation causedthe introduction of more electrons ... to ethanol gas andLPG compared with that of SnO2doped with the other dopants.Among carbon nanotubes-doped SnO2sensors, the sensor doped with 0.1 wt% MWCNTs with a diameter ranging from 20...
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Báo cáo khoa học: Thermal stability of homologous functional units of Helix pomatia hemocyanin does not correlate with carbohydrate content potx

Báo cáo khoa học: Thermal stability of homologous functional units of Helix pomatia hemocyanin does not correlate with carbohydrate content potx

... ther-mal stability of the homologous FUs of b-hemocyanin of H. pomatia and considered the role of the degree of glycosylation and the secondary structure variabilityon the observed differences in stability. ResultsThe ... visually, assuming thesteepest part of the curve reflects the global unfolding of HpH-h.DiscussionThe thermal stability of the eight FUs of b-HpH wasinvestigated. Six of these FUs were found to be ... structures of OdH-g andRtH2-e [7,8], two out of three disulfide bridges, whichwill contribute to its stability [20]. The lower stability of the b-domain might explain the pronounced earlyonset of the...
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