Ultraviolet amplified spontaneous emission from self-organized network of zinc oxide nanofibers

Xu, C. X.; Sun, X. W.; Yuen, Clement; Chen, B. J.; Yu, S. F.; Dong, Z. L.
January 2005
Applied Physics Letters;1/3/2005, Vol. 86 Issue 1, p011118
Academic Journal
Self-organized zinc oxide (ZnO) nanofiber network with six-fold symmetry was fabricated on ZnO-buffered (0001) sapphire substrate with patterned gold catalyst by vapor-phase transport method. From the ZnO buffer layer, hexagonal ZnO nanorods with identical in-plane structure grew epitaxially along [0001] orientation to form vertical stems. The nanofiber branches grew horizontally from six side-surfaces of the vertical stem along [0110] and other equivalent directions. The aligned network structure constructed a waveguide array with optical gain. Ultraviolet amplified spontaneous emission was observed along the side-branching nanofibers when the aligned ZnO network was excited by a frequency-tripled Nd:YAG laser.


Related Articles

  • A cost-effective approach to reducing NOx emissions. Canter, Neil // Tribology & Lubrication Technology;Oct2005, Vol. 61 Issue 10, p10 

    Focuses on a noble-free nitrous oxide storage and reduction (NSR) catalyst with comparable performance to existing catalysts based on platinum and rhodium developed by a research group which is believed to be a cost-effective approach to reducing nitrous oxide emission. Overview of how the...

  • Determination of the epitaxial growth of zinc oxide nanowires on sapphire by grazing incidence synchrotron x-ray diffraction. Campos, L. C.; Dalal, S. H.; Baptista, D. L.; Magalhães-Paniago, R.; Ferlauto, A. S.; Milne, W. I.; Ladeira, L. O.; Lacerda, R. G. // Applied Physics Letters;4/30/2007, Vol. 90 Issue 18, p181929 

    This letter shows that aligned zinc oxide (ZnO) nanowires growth on sapphire substrates is epitaxial and demonstrates the crystallographic relation between the two using grazing incidence synchrotron x-ray diffraction (XRD). The in-plane lattice match between the sapphire and the nanowires was...

  • The effect of exothermic reactions during regeneration on the NOX trapping efficiency of a NOX storage/reduction catalyst. Epling, William S.; Yezerets, Aleksey; Currier, Neal W. // Catalysis Letters;Aug2006, Vol. 110 Issue 1/2, p143 

    An unusual behavior was observed during experiments conducted at 371 and 465 °C with a commercial NOX storage/reduction catalyst: the outlet NOX concentration during the trapping phase reached a cycle minimum after regeneration, increased for 20–30 s, as expected, but then surprisingly...

  • NEW LIFE FOR OLD CATALYST. Cooper, Mike // Power Engineering;Mar2006, Vol. 110 Issue 3, p32 

    Summarizes the results of a study on selective catalytic reduction as the preferred technology for the mitigation of nitrogen oxide emissions conducted at SCR-Tech in the U.S. Phases of the overall catalyst regeneration process; Factors that need to be considered when designing an experimental...

  • Nanostellar Shaves Development Times for New Nanomaterials, Commercializing Product in Record Time. Babbin, Malcolm // Automotive Industries;Nov2007, Vol. 187 Issue 11, p16 

    The reports on the statement issued by Nanostellar Inc., a leader in nano-engineered catalyst materials, that its Rational Catalyst Design process has enabled it to significantly reduce research and development time for new diesel-emissions catalysts. Nanostellar was founded in 2004 with a...

  • A Comparative Study of Partial Oxidation of Methanol over Zinc Oxide Supported Metallic Catalysts. Jianxin, Wang; Laitao, Luo // Catalysis Letters;Dec2008, Vol. 126 Issue 3/4, p325 

    Au/ZnO, Pd/ZnO and Au–Pd/ZnO catalysts were prepared by PVP-stabilized reduction method by C2H5OH. The catalysts have been used successfully for hydrogen production by partial oxidation of methanol (POM). The influence of Au, Pd and Au–Pd on the performance of supported catalysts...

  • Green Photoluminescence in ZnO Nanostructures. Djurišić, A. B.; Leung, Y. H.; Liu, Z. T.; Li, D.; Xie, M. H.; Choy, W. C. H.; Cheah, K. W. // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p889 

    In photoluminescence (PL) spectrum of ZnO, typically one or more peaks in the visible spectral range due to defect emission can be observed in addition to one UV peak due to band edge emission. The origin of the defect emission is controversial and several mechanisms have been proposed. In this...

  • Temperature-dependent studies of defect-assisted light emission and excitation processes in crystalline ZnO nanowire phosphors. Omari, M.; Gupta, A.; Kouklin, N. // Journal of Applied Physics;Aug2010, Vol. 108 Issue 2, p024315 

    A series of photoluminescence and photoluminescence-excitation spectroscopies have been performed to probe the processes regulating defect-assisted light emission from one-dimensional ZnO nanowire phosphors in a wide temperature range of 123–463 K. The observed nonmonotonic change of the...

  • Tuning of deep level emission in highly oriented electrodeposited ZnO nanorods by post growth annealing treatments. Simimol, A.; Manikandanath, N. T.; Anappara, Aji A.; Chowdhury, Prasanta; Barshilia, Harish C. // Journal of Applied Physics;2014, Vol. 116 Issue 7, p074309-1 

    Highly dense and c-axis oriented zinc oxide (ZnO) nanorods with hexagonal wurtzite facets were deposited on fluorine doped tin oxide coated glass substrates by a simple and cost-effective electrodeposition method at low bath temperature (80 °C). The as-grown samples were then annealed at...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics