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Issue 67, 2016, Issue in Progress
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Template synthesis of metal tungsten nanowire bundles with high field electron emission performance

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Abstract

One-dimensional (1D) metal nanowires are of great importance for nanodevices due to their distinctive optical, electronic and mechanical properties. Here, for the first time, we report a simple H2 reduction-assisted hard-templating approach to fabricate metallic tungsten (W) nanowire bundles by using mesoporous silica SBA-15 as a template. The metal W nanowires with a length of 300–500 nm and diameter of 5–8 nm have long-range regularity over large areas because of their inter-wire pillar connections. Each nanowire has body-centred cubic (bcc)-W crystalline structure with a [110] preferential growth direction. As a field electron emitter, the W nanowires bundles show a low turn-on field of 4.1 V μm−1, a high field enhancement factor up to 3563 and good field emission stability (with a fluctuation below 5% over 32 h).

Graphical abstract: Template synthesis of metal tungsten nanowire bundles with high field electron emission performance

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Publication details

The article was received on 11 Apr 2016, accepted on 21 Jun 2016 and first published on 23 Jun 2016


Article type: Paper
DOI: 10.1039/C6RA09308F
Citation: RSC Adv., 2016,6, 62668-62674
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    Template synthesis of metal tungsten nanowire bundles with high field electron emission performance

    Y. Liu, K. Lan, M. H. Es-Saheb, A. A. Elzatahry and D. Zhao, RSC Adv., 2016, 6, 62668
    DOI: 10.1039/C6RA09308F

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