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    Hexagonal boron nitride tagged posts

    New Era of Electronics and Quantum devices could be ushered in with virtually perfect single layer of “white graphene”

    December 2, 2015, Categories  Chemistry/Nanotechnology, Physics, Technology/Electronics

     

    The material, technically known as hexagonal boron nitride, features better transparency than its sister, graphene, is chemically inert, or non-reactive, and atomically smooth. It also features high mechanical strength and thermal conductivity. Unlike graphene, however, it is an insulator instead of a conductor of electricity, making it useful as a substrate and the foundation for the electronics in cell phones, laptops, tablets and many other devices.

    Growth and transfer of 2-D material such as hexagonal boron nitride and graphene was performed by a team that included Yijing Stehle of Oak Ridge National Laboratory. Credit: ORNL

    Growth and transfer of 2-D material such as hexagonal boron nitride and graphene was performed by a team that included Yijing Stehle of Oak Ridge National Laboratory. Credit: ORNL

    “Imagine batteries, capacitors, solar cells, video screens and fuel cells as thin as a piece of paper,” said ORNL’s Yijing Stehle...

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    Scientists Synthesize Hexagonal Boron Nitride

    October 28, 2015, Categories  Chemistry/Nanotechnology, Physics, Technology/Electronics

    Synthesis of multilayer h-BN film.

    (a) Schematic diagram of the chemical vapour deposition approach for h-BN synthesis. Borazine is used as a precursor. A multilayer h-BN film is grown on a Fe foil in a quarts tube. (b,c) Photographs of as-grown h-BN film on a Fe foil and the transferred h-BN film onto a SiO2/Si substrate. (d,e) SEM images of an h-BN film on a Fe foil. (f) Cathodoluminescence spectra of multilayer h-BN film. (g) Optical image of multilayer h-BN film. (h) Raman mapping image of the E2g peak near 1,366 cm−1 corresponding to the area of g. (i) Raman spectra of each spot for the corresponding blue triangle, red circle and black square in h. (j) X-ray diffraction pattern of multilayer h-BN film on a SiO2/Si substrate. (k) Contact angles of bare Fe (top) and as-grown h-BN on a Fe foil (bottom)...

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