News Column

New Nanowires Study Findings Have Been Reported by J. Segura-Ruiz and Colleagues

June 10, 2014



By a News Reporter-Staff News Editor at Physics Week -- A new study on Nanowires is now available. According to news reporting out of Grenoble, France, by VerticalNews editors, research stated, "In this work, we report on the composition, short-and long-range structural order of single molecular beam epitaxy grown In(x)Ga(1-x)N nanowires using a hard X-ray synchrotron nanoprobe. Nano-X-ray fluorescence mapping reveals an axial and radial heterogeneous elemental distribution in the single wires with Ga accumulation at their bottom and outer regions."

Our news journalists obtained a quote from the research, "Polarization-dependent nano-X-ray absorption near edge structure demonstrates that despite the elemental modulation, the tetrahedral order around the Ga atoms remains along the nanowires. Nano-X-ray diffraction mapping on single nanowires shows the existence of at least three different phases at their bottom: an In-poor shell and two In-rich phases. The alloy homogenizes toward the top of the wires, where a single In-rich phase is observed. No signatures of In-metallic precipitates are observed in the diffraction spectra. The In-content along the single nanowires estimated from X-ray fluorescence and diffraction data are in good agreement. A rough picture of these phenomena is briefly presented."

According to the news editors, the research concluded: "We anticipate that this methodology will contribute to a greater understanding of the underlying growth concepts not only of nanowires but also of many nanostructures in materials science."

For more information on this research see: Phase separation in single In(x)Ga(1-x)N nanowires revealed through a hard X-ray synchrotron nanoprobe. Nano Letters, 2014;14(3):1300-5. (American Chemical Society - www.acs.org; Nano Letters - www.pubs.acs.org/journal/nalefd)

Our news journalists report that additional information may be obtained by contacting J. Segura-Ruiz, Experiments Division, European Synchrotron Radiation Facility , 38043 Grenoble, France. Additional authors for this research include G. Martinez-Criado, C. Denker, J. Malindretos and A. Rizzi.

Keywords for this news article include: France, Europe, Physics, Grenoble, Synchrotrons, Nanotechnology, Emerging Technologies.

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Source: Physics Week