The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We report the growth of InP/InGaAs core-shell nanowires by metal organic chemical vapour deposition (MOCVD). The grown nanowires are distributed uniformly and are vertical to the substrate. The coreshell nanowires have been structurally characterised by scanning electron microscopy and transmission electron microscopy.
The growth mechanism and cathodoluminescence of dual phase ZnS tetrapod tree-like heterostructures with the zinc blende structured trunks and the hexagonal wurtzite structured branches were prepared and characterised. The polarity induced growth of tetrapod ZnS trees was confirmed by advanced electron microscopy. Two strong UV emissions (centred at 3.68 and 3.83 eV) have been observed at room temperature,...
The behavior of transition metals in ZnO has become an important topic for spintronics. As the fundamental property, the nano-structural characteristics of the transition metal implanted ZnO have been studied. It is clearly observed that in ZnO the Mn+ implantation and post-annealing result in (1) the formation of crystallographically orientated Zn nanocrystals within the ZnO matrix and (2) Mn atoms...
Two new crystalline phases, one with a rhombohedral structure (hexagonal unit cell parameters: a=0.540nm and c=2.910nm) and the other with a monoclinic structure (a=0.951nm, b=0.546nm, c=1.015nm and β=72°), are found in a slowly-cooled Zr-based metallic glass through detailed microstructure characterization.
The kinks formation in heterostructural nanowires was observed to be dominant when InAs nanowires were grown on GaAs nanowires. Nanowires were grown through vapor-liquid-solid (VLS) mechanism in an MOCVD (metalorganic chemical vapor deposition) reactor. GaAs nanowires were grown in [1 1 1 ]B direction on a GaAs (1 1 1 )B substrate. When InAs nanowires grown on the GaAs nanowires, most of the InAs...
Grain size dependence of ionic conductivities of Ce1-xYbxO2-x/2 (x=0.10, 0.15, 0.20 and 0.25) was studied. The conductivity decreased with decreasing grain size and reached the minimum value at the grain size about 0.43-0.91 mum depending on different dopant concentration. Then the conductivity increased with a continuous decrease in grain size. TEM observation indicated that aforementioned conductivity...
The grain size dependence of electrolytic properties in 25 at.% yttrium doped ceria was investigated. The sintered bodies were prepared from fine Y0.25Ce0.75O1.875 powders synthesized by carbonate co-precipitation method. By using sintering temperature in range of 950deg-1400degC, the average grain size of electrolytes varied from 90 nm to 0.9 mum. The conductivity of samples with different grain...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.