Báo cáo hóa học: " Formation of Ge-Sn nanodots on Si(100) surfaces by molecular beam epitaxy" docx

Báo cáo hóa học: " Synthesis of long group IV semiconductor nanowires by molecular beam epitaxy" doc

... nanowires grown by electron beam evaporation. Nanotechnology 2009, 20:135601.9. Werner P, Zakharov ND, Gerth G, Schubert L, Gösele U: On the formation of Si nanowires by molecular beam epitaxy. Int ... recon-struction, when the Au coverage is higher than onemonolayer [17-19]. Our observation of a flat sidewall isthus consistent with previous surface studies about theadsorption of gold on ... types of NWs. The formation of atomically flat {111} sidewalls on the <110>-oriented Ge NWs accounts for a larger diffusionlength.IntroductionSemiconductor nanowires (NWs) consist of a...

Báo cáo hóa học: " Synthesis of long group IV semiconductor nanowires by molecular beam epitaxy" ppt

... recon-struction, when the Au coverage is higher than onemonolayer [17-19]. Our observation of a flat sidewall isthus consistent with previous surface studies about theadsorption of gold on ... nanowires grown by electron beam evaporation. Nanotechnology 2009, 20:135601.9. Werner P, Zakharov ND, Gerth G, Schubert L, Gösele U: On the formation of Si nanowires by molecular beam epitaxy. Int ... Adsorption of gold on Si(112) planes is also known to causes the faceting of these planes [13]. Similarly, Au diffusion from the seedparticle is at the origin of the facet formation on the{112}...

Báo cáo hóa học: " Formation of silicon nanodots via ion beam sputtering of ultrathin gold thin film coatings on Si" pot

... mechanisms on howimpurity seeding can induce nanostructure formation on silicon. The formation of silicides, modification of thecollision cascade, and stress generation during ion bom-bardment ... impurity effects on silicon nanostr ucturing. In this work, we report the formation of s ilicon nanodots on silicon substrates vialow-energy ion irradiation of ultrathin film gold coatingsonSi.NoimpurityseedingwasnecessarytoformSinanostructures. ... gold-siliconmixing.The formation of gold silicides is a strong indication of the mixing between silicon and gold and has beenpreviously discussed in the literature in the context of xenon and krypton irradiation...

Báo cáo hóa học: " Preparation of Fe3O4 Spherical Nanoporous Particles Facilitated by Polyethylene Glycol 4000" docx

... temperature of PEG 2000. The reduction of PEG 2000 concentration caused by quick evaporationmay be a reason for the failure of porous structure’s fab-rication. Decreasing the reaction temperature ... of PEG 6000.ConclusionsIn summary, the Fe3O4nanoporous particles are synthe-sized in the presence of polymer PEG 4000 by thermaldecomposition of iron acetylacetonate. The morphology of product ... nature,and concentration of anions. Other synthesis methods suchas polyol-mediated sol–gel [13] and sonochemical [14] arealso proposed. To overcome the limitations introduced by aqueous precipitation...

Báo cáo hóa học: " Layers of Metal Nanoparticles on Semiconductors Deposited by Electrophoresis from Solutions with Reverse Micelles" pdf

... reversemicelles of water/AOT/isooctane solution and depositedonto silicon or InP substrates by electrophoresis. A largechange of capacitance-voltage characteristics of mercurycontacts on a semiconductor ... characteristics of a Schottky diodeprepared by deposition of Pd nanoparticles onto n-type InP454 Nanoscale Res Lett (2007) 2:450–454123NANO EXPRESSLayers of Metal Nanoparticles on Semiconductors ... InPIntroduction Formation of stable, reproducible high-barrier metal/InPinterfaces is an essential prerequisite for the development of high-speed electronic devices, charge-control devices,optoelectronic...

Báo cáo hóa học: " Formation of Ge-Sn nanodots on Si(100) surfaces by molecular beam epitaxy" docx

... NANO EXPRESS Open Access Formation of Ge-Sn nanodots on Si(100) surfaces by molecular beam epitaxyVladimir Mashanov1*, Vladimir Ulyanov1, Vyacheslav Timofeev1, Aleksandr Nikiforov1, ... Relying on the reflection of high energy electron diffraction, AFM, and STM, it is concluded that molecular beam growth of Ge1-xSnxheterostructures with the small concentrations of Sn in ... technique of reflection of high energy electrondiffraction (RHEED) has been used to monitor the evo-lution of the surface structure during the growth of thesolid solution Ge0.96Sn0.04 on Si(100). ...

báo cáo hóa học: " Formation of multinucleated giant cells and microglial degeneration in rats expressing a mutant Cu/Zn superoxide dismutase gene" ppt

... multinucleated giant cell formation. Glia 1993,8(1):51-61.31. Tambuyzer BR, Nouwen EJ: Inhibition of microglia multinucle-ated giant cell formation and induction of differentiation by GM-CSF using a ... age-matched controls; # p < 0.05 with respect to onset group.BioMed CentralPage 1 of 12(page number not for citation purposes)Journal of NeuroinflammationOpen AccessResearch Formation of multinucleated ... is conceivabletherefore that a signal is transmitted retrogradely fromventral horn cells to these supraspinal regions to trigger formation of microglial fusions, consistent with thenotion of...

Báo cáo hóa học: " Effects of rehydration nutrients on H2S metabolism and formation of volatile sulfur compounds by the wine yeast VL3" docx

... concentration of higher alcohols wasdecreased (Additional file 1). Further characterisation of the effect of rehydration nutrients on the f ormation of volatile sulfur compounds was obtained by monitoringH2S ... substances of th e rehydration nutrient mixture.Nonetheless, thes e exp eriments are first to demonstratea clear effect of GSH supplementation at rehydra tion on the kinetics of H2S formation during ... increased with the addition of rehydration nutrients (Figure 1). Unlike 3MH and3MHA, the concent ration of 4MMP was not affected by the addition of nutrients at rehydration, while it signifi-cantly...

Báo cáo hóa học: " Formation of tungsten oxide nanostructures by laser pyrolysis: stars, fibres and spheres" ppt

... concentration difference andgradient (CDG) technique [20]. This CDG techniqueused a high local concentration of one reactant mixedwith a low concentration of another reactant under ambi-ent conditions, ... where the high concentration favouredthe thermodynamic conditions for crystal growth and thelow concentration resulted in a diffusion-controlledkinetic environment for growth of hierarchical ... products are of high quality and purity [9].Laser pyrolysis is based on photon-induced chemicalreactions, which is believed to rely on a resonant inter-action between a laser beam s emission line...

Báo cáo hóa học: " Formation of ZnO Micro-Flowers Prepared via Solution Process and their Antibacterial Activity" pptx

... investigation reveals that at lowestconcentration of ZnO-MFs solution inhibiting the growth of microbial strain which was found to be 5 lg/ml for allthe tested pathogens. Additionally, on the basis of ... the accumulation of small hexagonal shapedzinc oxide nanorods. Additionally, SAED (selected areaelectron diffraction) pattern is deﬁning the growth direction of the nanorods and conﬁrming that ... characterization techniques. On the basis of characterization, a formation mechanism forthe ZnO-MFs has also been proposed. Additionally, we havetried to investigate the antibacterial activity of ZnO-MFsagainst...

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