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Researchers from Faculty of Science Discuss Findings in Nanowires (Structural and Chemical Evolution of the Spontaneous Core-Shell Structures of...

September 12, 2014



Researchers from Faculty of Science Discuss Findings in Nanowires (Structural and Chemical Evolution of the Spontaneous Core-Shell Structures of AlxGa1-xN/GaN Nanowires)

By a News Reporter-Staff News Editor at Science Letter -- A new study on Nanowires is now available. According to news reporting from Cadiz, Spain, by NewsRx journalists, research stated, "A study by electron microscopy techniques of the structural and compositional properties of AlxGa1-xN/GaN nanowire (NW) heterostructures on Si(111) is presented. AlxGa1-xN depositions grown without catalyst by plasma-assisted molecular beam epitaxy were designed to form NWs in the range of 0.20 < x< 0.40 with different lengths and growth temperatures."

The news correspondents obtained a quote from the research from the Faculty of Science, "The NWs exhibit a well-defined core-shell radial structure with a complex chemical distribution along and across the growth direction that finally affects the NW morphology. All the wires have an initial stage with a maximum Al content in the core slightly above the GaN/AlxGa1-xN interface, which initially decreases exponentially with the NW height depending on the nominal Al content and the growth temperature. In longer NWs, this trend changes and evolves increasing both the Al/Ga ratio and the core diameter as well as sharpening the shell."

According to the news reporters, the research concluded: "Adatom surface kinetic differences and the geometrical shadow effect during the growth are the probable drivers of this behavior."

For more information on this research see: Structural and Chemical Evolution of the Spontaneous Core-Shell Structures of AlxGa1-xN/GaN Nanowires. Microscopy and Microanalysis, 2014;20(4):1254-1261. Microscopy and Microanalysis can be contacted at: Cambridge Univ Press, 32 Avenue Of The Americas, New York, NY 10013-2473, USA. (Cambridge University Press - www.cambridge.org; Microscopy and Microanalysis - journals.cambridge.org/action/displayJournal?jid=MAM)

Our news journalists report that additional information may be obtained by contacting R.F. Allah, Fac Ciencias, QI, Cadiz 11510, Spain. Additional authors for this research include T. Ben and D. Gonzalez (see also Nanowires).

Keywords for this news article include: Cadiz, Spain, Europe, Emerging Technologies, Nanotechnology, Nanowire, Nanowires

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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