thermal oxide synthesis and characterization of fe3o4nanorods and fe2o3 nanowires
thermal oxide synthesis and characterization of fe3o4 nanorods and fe2o3 nanowires
... of the growth process of Fe2O3 nanowires Conclusions In summary, we successfully prepared Fe3O4 nanorods and Fe2O3 nanowires via a simple thermal oxide process We investigated the influence of ... composition of the sample, and the results can be seen in Figure 4(d) It can be clearly identified that the nanorods were composed of Fe and O elements, and the ratio of the number of atoms Fe and O ... (c)－(f) and the side SEM image was shown in Figure 1(b) As seen in Figure 1(c) and (e), the shape of nanorods samples were the appearance of rectangular cross-section and with the length range of...
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Báo cáo hóa học: " Growth and characterization of gold catalyzed SiGe nanowires and alternative metal-catalyzed Si nanowires" pot
... growth of NW, and revised the manuscript FD carried out the growth of Si NW, SEM characterization, analysis and interpretation of the results PG, FO, participated to the growth of Si and SiGe ... growth,SEM characterization, analysis and interpretation of the data and drafted the manuscript TB conceived the study and carried out its coordination,the analysis and interpretation of the data, ... HCl and silane partial pressures (respectively, 160 and 100 mTorr) and fixed deposition time (results not shown) It is observed that NW growth occurs from 600°C, and the length and density of...
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Characterization of tin catalyzed silicon nanowires synthesized by the hydrogen radical assisted deposition method
... characteristics of as-synthesized SiNWs are analyzed by a scanning transmission electron microscopy (S-TEM) and an energy dispersive X-ray spectrometer (EDS) Results and discussion Before synthesis of silicon ... Schematic of the Sn–Si alloy binary phase diagram the synthesized SiNWs are highly crystallized silicon with diffraction peaks of (111), (220) and (311) Moreover, the Sn metal peaks of (200) and (101) ... of gaseous reactants into a nano-size metal liquid droplet, followed by nucleation and growth Fig FE-SEM images of the as-synthesized SiNWs at hydrogen gas flow of (a) 130 sccm, (b) 150 sccm and...
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Báo cáo hóa học: " Influence of the oxide layer for growth of self-assisted InAs nanowires on Si(111)" ppt
... control the oxide layer thickness and we have shown Figure Regrowth of oxide on a 200°C hotplate (A) Length and width of NWs as a function of regrowth time for the oxide layer (B) Percentage of vertical ... several micrometers In the oxide- free areas, the morphology of the NWs is very different, and a low density of thick and short NWs are found This clearly shows that the oxide layer plays a major ... seems sufficient to destroy the hydrogen passivation and thereby creating an oxide layer The average length and width of the NWs as a function of oxide regrowth time reach a fairly constant level...
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Báo cáo hóa học: " Direct Synthesis and Characterization of Optically Transparent Conformal Zinc Oxide Nanocrystalline Thin Films by Rapid Thermal Plasma CVD" pptx
... measurements of 20-nm- and 200-nm-thick ZnO films show a high optical transmittance at spectra 375 nm and above, which corresponds to the optical bandgap of ZnO Thermal annealing of ZnO films ... Two main components of the synthesis system - the source and growth substrates - are contained within the sealed quartz chamber and flushed with argon and oxygen at a ratio of 99.67% to 0.33% ... (c) Anatomy of the synthesis setup showing the location of the solid zinc disc that is enclosed within a nickel heating chamber and the formation of a plasma jet (d) Infrared image of an exposed...
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Synthesis, fabrication, characterization, properties and thermal degradation kinetics study of low k poly(ether imide)s and co poly(ether imide)s, and poly(ether imide) MMT clay nanocomposites
... thank Prof Syamal K Lahiri of IMRE, Assoc Prof B V R Chowdari of the Dept of Physics, Assoc Prof Jagdese J Vittal of the Dept of Chemistry, Assoc Prof Madapusi P Srinivasan and Assoc Prof Ajay ... 3.2.2.3.A.1 Synthesis of poly(amic acid) (PAA) 168 3.2.2.3.1 Synthesis of [ODPA + m-Tolidine] poly(amic acid) (PAA) 169 x 3.2.2.4 Synthesis of fluoro-polyimides (6F-PI) 170 3.2.2.4.1 Synthesis of [6FDA ... greatest form of ‘Violence and Sin’ of mankind” -Mahatma Gandhi I would like to express my sincere appreciation and profound gratitude to my doctoral thesis advisor, distinguished Professor Suat...
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Tài liệu Characterization of the Polymorphic Behavior of an Organic Compound Using a Dynamic Thermal and X-ray Powder Diffraction Technique pptx
... hydrate VI hydrate thermal eventa loss of water melt of Form III? loss of water melt of Form III Form I to Form II melt of Form II loss of water melt of Form III Form I to Form II melt of Form II Form ... Form I to Form II melt of Form II melt of Form VI melt of Form VI Form I to Form II melt of Form II loss of water melt of Form VI loss of water melt of Form VI Table Summary of combined DSC/XRD ... anhydrous thermal event Form I to Form II melt of Form II Form I to Form II melt of Form II loss of water melt of Form I Form I to Form II melt of Form II loss of water melt of Form III melt of Form...
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Tài liệu Báo cáo khóa học: Characterization of the products of the genes SNO1 and SNZ1 involved in pyridoxine synthesis in Saccharomyces cerevisiae pptx
... library of yeast chromosomal DNA It was found that 4.6 and 5.1 kb overlapping fragments of chromosome XIII carrying SNO1 and SNZ1 were capable of complementing the defect of mutant K64 (Figs and ... homologues SNO2, SNO3, SNZ2 and SNZ3 complement the defect The relationship of all of these genes remains to be clarified Expression and purification of Sno1p and Snz1p In light of the similarity in the ... maximum of 5% of that of the intact complex described above This suggests that although Sno1p and Snz1p associate spontaneously, renaturation of either one or both of the proteins was incomplete and...
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![Tài liệu Báo cáo khoa học: Specific targeting of a DNA-alkylating reagent to mitochondria Synthesis and characterization of [4-((11aS)-7-methoxy-1,2,3,11a-tetrahydro-5H-pyrrolo[2,1-c][1,4]benzodiazepin-5-on-8-oxy)butyl]-triphenylphosphonium iodide doc](https://media.store123doc.com/images/document/14/br/vp/small_vpv1392870032.jpg)
Tài liệu Báo cáo khoa học: Specific targeting of a DNA-alkylating reagent to mitochondria Synthesis and characterization of [4-((11aS)-7-methoxy-1,2,3,11a-tetrahydro-5H-pyrrolo[2,1-c][1,4]benzodiazepin-5-on-8-oxy)butyl]-triphenylphosphonium iodide doc
... potential, and addition of a TPP-moiety has been used to drive the selective uptake of a wide variety of Ó FEBS 2003 Fig Selective uptake of mitoDC-81 by mitochondria and subsequent alkylation of mtDNA ... the vicinity of mtDNA with the resultant binding and selective alkylation leading to a depletion of mtDNA in intact cells (Fig 1) Here we report the synthesis and characterization of a novel mitochondria-targeted ... mitochondria and cells In addition to facilitating the development of antigenomic therapies, such a reagent might also be useful in investigating the rate of turnover of mtDNA and in the derivation of...
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Báo cáo khoa học: Synthesis and characterization of a new and radiolabeled high-affinity substrate for H+/peptide cotransporters pdf
... parameters and transport characteristics of Bip-[3H]Pro Results and Discussion Synthesis, chemical characterization and stability of Bip-Pro Figure shows the structure (Fig 1A) and the synthesis ... cells and 10 and 100 lm in SKPT cells) in the presence of increasing concentrations of Bip-Pro (0– 100 lm and 0–50 lm, respectively) The results are Fig Interaction of Bip-Pro with PEPT1 and PEPT2 ... concentrations and at increasing Bip-Pro concentrations The diffusional component of [14C]Gly-Sar uptake, of 8% in Caco-2 cells and of 4% in SKPT cells, measured in the presence of excess of Gly-Sar...
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Báo cáo khoa học: Characterization of the tRNA and ribosome-dependent pppGpp-synthesis by recombinant stringent factor from Escherichia coli pot
... concomitant release of tRNA [5] The activity of SF was found to increase threefold in the presence of TC ribosomes (Fig 4, lane 2; 450 pmol pppGppÆpmol SF)1Æmin)1) and twofold in the presence of reassociated ... appears that extensive purification of ribosomes impairs the tRNA-binding and pppGpp synthesis stimulating activity of ribosomes Template-dependence of pppGpp -synthesis Table shows that if SF is ... formed with twofold excess (A, C, D, E) or equimolar amounts of tRNAMet (B) before addition of threefold excess f of tRNAPhe (D, E) DMS (A, B, E) and kethoxal (C, D) modifications and primer extensions...
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Báo cáo " Sol-gel synthesis and particle size characterization of CdSe Quantum dots " ppt
... where E g(a) is the effective band gap of QDs with radius of a, the band gap E g, Bohr exciton radius aB and Bohr exciton energy R * are the specific parameters of bulk material From absorption ... determine the E g(a) of QDs, hence can estimate the mean size of QDs From this formula, the standard curve and measured absorption spectra, we can estimate the mean size of QDs Based on the analysis ... TEM and by the wavelength of the first excitonic absorption peak (Table 2) The deviation of the peaks in absorption spectra is about 50 nm, which may be due to the difference of surface states of...
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Synthesis and characterization of silicon nanowires using tin catalyst for solar cells application
... at λ b 700 nm [20] The difference of the reflectance might be the effect of synthesis conditions, such as thickness of metal film and SiH4 gas flow The reduction of reflectance is very helpful to ... Therefore, further reduction of the reflectance will be expected from the optimization of the synthesis conditions of SiNWs For analysis of the electrical properties, the I–V curve of the fabricated SiNWs ... conductive oxide (TCO) film To investigate the morphological property of SiNWs, a FE-SEM observation was carried out after synthesis of SiNWs Fig 1(b) shows the topview (15° tilted) and cross-section...
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Synthesis and photoluminescence property of silicon carbon nanowires synthesized by the thermal evaporation method
... that the nanowires are composed of Si, C and small amount of O It is found that the molecular ratio of Si/C/O of the nanowires is about 3:2:2, which corresponds well to the standard SiC and SiO2 ... typical TEM image of the SiC nanowires, revealing that the periphery of SiC nanowires is very clean and straight It also shows that the SiC nanowires possess a high density of planar defects, ... reveals that large quantities of randomly distributed wire-like products have been obtained The nanowires are of uniform diameter of about 50 nm and lengths up to tens of micrometers In addition,...
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Synthesis and characterization of semiconducting nanowires for gas sensing
... for the investigation of the shape of the nanowires and impurities and local variations in the composition (Z-contrast) 3.1 SnO2 nanowires Fig Nucleation of indium oxide nanowires over polycrystalline ... investigation of the termination of the nanowire lateral sides and apex Electron diffraction (ED) and analysis of zero-order and higher-order Laue-zones allows precise determination of unit cell and space ... pattern of nanowire, (d) STEM-HAADF image of a nanowire, and (e) linescan of the HAADF signal (solid line) and numerical fit of the shape of the nanowire (dashed line) As both composition and phase...
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Báo cáo khoa học: Synthesis and characterization of Pi4, a scorpion toxin from Pandinus imperator that acts on K+ channels doc
... sidechains of Glu332 of each rat Kv1.2 a-subunit (Kv1.2 channel is composed of four a-subunits) and Arg10, Arg19, Lys30 and Lys33 of Pi4 The Lys26 sidechain of Pi4 enters into the ion channel pore and ... binding of [125I]apamin without any other ligand, and B is the binding in the presence of the indicated concentrations of competitor Abscissa axis is the logarithm of the molar concentration of competitor ... atoms of the P-domain selectivity filter Residue Tyr35 of Pi4 is involved in a hydrophobic cluster of aromatic residues consisting of Trp344, from one of the four Kv1.2 a-subunits, and Trp345 and...
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fabrication and characterization of anodic titanium oxide nanotube arrays of controlled
... deionized water containing a small proportion of Al2O3 particles of average size 300 nm Parts a and b of Figure show top and side views of SEM images of ATO films after ultrasonic cleaning that completely ... increasing duration of anodization and F- Figure SEM images of ATO NT after treatments with TiCl4: (a) and (c) top and side views with annealing temperature 350 °C; (b) and (d) top and side views ... durations Figure shows the variation of length of TiO2 NT as a function of period of anodization (the corresponding SEM images of each datum showing the lengths of the tubes are given in the Supporting...
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facile synthesis and characterization of novel nanocomposites
... large amount of water and hydroxyl groups existed in the tubular products because of the existence of a bending vibration of H O H at 1630 cm−1 , and a strong stretching vibration of O H Fig EDX ... simple hydrothermal reaction of bulky rutile powders and 10 M NaOH solution without using any templates and catalysts The inner and outer diameters of the nanotubes were approximately and nm, respectively ... a hydrothermal reaction of rutile TiO2 in a 10 M NaOH solution Many rutile nanocrystals of 5–10 nm attached to the outer surface of the titanate nanotubes and some rutile nanocrystals of about...
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facile synthesis and no2 gas sensing of tungsten oxide nanorods assembled microspheres
... decreases after annealing and is 20, 13, and m2 /g for the samples annealed at 350, 450, and 550 ◦ C, respectively Crystal growth and the partial collapse of the substructure of the microspheres should ... temperatures of 100 and 150 ◦ C after the Fig XRD patterns of the WO3 ·xH2 O microspheres (a) dried at 60 ◦ C and annealed at (b) 350 ◦ C; (c) 450 ◦ C; and (d) 550 ◦ C Z Liu et al / Sensors and Actuators ... 110 (2006) 23829–23836 [32] J.H Ha, P Muralidharan, D.K Kim, Hydrothermal synthesis and characterization of self-assembled h-WO3 nanowires/ nanorods using EDTA salts, J Alloys Compd 475 (2009) 446–451...
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hydrothermal synthesis and characterization of - feooh and fe2o3 uniform nanocrystallines
... / Journal of Alloys and Compounds 433 (2007) 216–220 Fig (A) TEM image of the sample produced at 140 ◦ C for h (B) TEM image of the sample produced at 140 ◦ C for h The insets of (A and B) show ... O), sodium borohydride (NaBH4 ), and sodium dodecyl sulfate (SDS) were of analytical grade, and which were used without further purification 2.1 Preparation of iron oxides nanocrystallines In a typical ... phase of hematite ␣-Fe2 O3 and exhibits that each porous fusiform ␣-Fe2 O3 nanocrystalline was a single crystal Fig 5A and B shows scanning electron microscope images of a typical sample of fusiform...
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