Synthesis of well-ordered CuO nanofibers by a self-catalytic growth mechanism

Hsieh, Chien-Te; Chen, Jin-Ming; Lin, Hung-Hsiao; Shih, Han-Chang
May 2003
Applied Physics Letters;5/12/2003, Vol. 82 Issue 19, p3316
Academic Journal
One-dimensional and well-ordered CuO nanofiber arrays have been synthesized by a processing of self-catalytic growth. Using polycarbonate (PC) membrane as a template, copper nuclei sites Cu(111) were uniformly deposited on copper substrate via a high voltage input (electric field: 15 V/cm) in a copper sulphate solution. According to the pore diameter of PC membranes, two different sizes of copper nuclei could be well-controlled in ranges of 50 to 60 and 100 to 150 nm. With heat treatment in oxygen atmosphere, the electrodeposited copper nuclei were transformed into CuO nanofiber arrays. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy analyses showed that the nanocrystalline CuO nanofibers with a mean length of 8 μm had an average order of 10[SUP7]-10[SUP8]/cm[SUP2] in density, and their average diameters were accorded with the size of Cu nuclei.


Related Articles

  • Unified picture of the distribution of electric field gradients at Cu, O, and Tm sites in ReBa[sub 2]Cu[sub 3]O[sub 7-d]. Eremin, M. V.; Lavizina, O. V. // Journal of Experimental & Theoretical Physics;Jan97, Vol. 84 Issue 1, p80 

    An abundant set of published experimental NMR/NQR data on electric field gradients in ReBa[sub 2]Cu[sub 3]O[sub 7-d] high temperature conductors, where Re=Y and Tm, is used as a test for the singlet-correlated band theory. Because of the unusual spectral weight ("capacity") of this band, it has...

  • Effect of electric field on CuO nanoneedle growth during thermal oxidation and its growth mechanism. Xiaozhu Li; Jun Zhang; Yanwen Yuan; Lingmin Liao; Chunxu Pan // Journal of Applied Physics;Aug2010, Vol. 108 Issue 2, p024308 

    Different electric field intensities were added along the growth direction of CuO nanoneedles when using a thermal oxidation process. The results show that: (1) the length of CuO nanoneedles increased with the electric field, but when the voltage was greater than a certain value, the growth...

  • Mixed polaronic-ionic conduction in lithium borate glasses and glass-ceramics containing copper oxide. Khalil, M. M. I. // Applied Physics A: Materials Science & Processing;Mar2007, Vol. 86 Issue 4, p505 

    The effect of electric field strength on conduction in lithium borate glasses doped with CuO with different concentration was studied and the value of the jump distance of charge carrier was calculated. The conductivity measurements indicate that the conduction is due to non-adiabatic hopping of...

  • EXAFS studies of the local environment of lead and selenium atoms in PbTe[sub 1-x]Se[sub x] solid solutions. Lebedev, A. I.; Sluchinskaya, I. A.; Demin, V. N.; Munro, I. // Physics of the Solid State;Aug99, Vol. 41 Issue 8, p1275 

    EXAFS spectroscopy is used to study the local environment of lead and selenium atoms in PbTe[sub 1-x]Se[sub x] solid solutions. In addition to a bimodal distribution of the bond lengths in the first-coordination sphere, an unusually large value of the Debye-Waller factors for the Pb-Pb...

  • Tunability of terahertz random lasers with temperature based on superconducting materials. Ghasempour Ardakani, Abbas; Reza Bahrampour, Ali; Mohammad Mahdavi, Seyed; Hosseini, Mehdi // Journal of Applied Physics;Aug2012, Vol. 112 Issue 4, p043111 

    We theoretically demonstrate the tunabiltiy of terahertz random lasers composed of high temperature superconductor YBCO and ruby layers as active medium. The considered system is a one-dimensional disordered medium made of ruby grain and YBCO. Finite-difference time domain method is used to...

  • Electrically Controlled Membranes Exploiting Cassie-Wenzel Wetting Transitions. Bormashenko, Edward; Pogreb, Roman; Balter, Sagi; Aurbach, Doron // Scientific Reports;10/25/2013, p1 

    We report electrically controlled membranes which become permeable when an electrical field is exerted on a droplet deposited on the membrane. Micro-porous polycarbonate membranes are obtained with the breath-figures assembly technique, using micro-scaled stainless steel gauzes as supports. The...

  • Study of field emission, electrical transport, and their correlation of individual single CuO nanowires. PengRui Shao; ShaoZhi Deng; Jun Chen; Jian Chen; NingSheng Xu // Journal of Applied Physics;Jan2011, Vol. 109 Issue 2, p023710 

    We report our recent findings from the study of the field emission, electrical transport, and their correlation of individual single CuO nanowires grown by thermal oxidation. Typical Fowler-Nordheim (FN) plot of a single CuO nanowire exhibits an upward bending behavior with increasing applied...

  • Effect of CuO addition on the microstructure and electrical properties of SnO-based varistor. Hu, Guangliang; Zhu, Jianfeng; Yang, Haibo; Wang, Fen // Journal of Materials Science: Materials in Electronics;Aug2013, Vol. 24 Issue 8, p2944 

    The effect of CuO addition on the properties of (Co, Nb, Cr)-doped SnO varistors were investigated. The samples with different CuO concentrations were fabricated by the conventional ceramic method and sintered at 1,200, 1,250, 1,300 and 1,350 °C for 2 h. It is found that the nonlinear...

  • Experimental investigation of heat transfer coefficient of CuO/Water nanofluid in double pipe heat exchanger with or without electric field. Senthilraja, S.; Vijayakumar, K. C. K.; Gangadevi, R. // International Journal of Engineering & Technology (0975-4024);Feb/Mar2014, Vol. 6 Issue 1, p460 

    This article reports an experimental study of heat transfer coefficient of CuO/Water nanofluid flowing in a horizontal double pipe counter flow heat exchanger in the presence and absence of electric field. The CuO nanoparticles of about 27nm diameter were used in this study. The heat exchange...


Read the Article


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

Try another library?
Sign out of this library

Other Topics