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nanotimes News in Brief
11-06/07 :: June/July 2011
Nanowires and Nanotubes // Arrays of Indefinitely long Uniform Nanowires and Nanotubes
© Text: Abstract, Nature Materials © Images: Bilkent University, Turkey / Mehmet Bayindir
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esearchers at Bilkent University, Turkey, present in Nature Materials arrays of indefinitely long
uniform nanowires and nanotubes. They report a new thermal size-reduction process to produce well- ordered, globally oriented, indefinitely long nanowire and nanotube arrays with different materials.
The new technique involves iterative co-drawing of hermetically sealed multimaterials in compatible polymer matrices similar to fibre drawing. Global- ly oriented, endlessly parallel, axially and radially uniform semiconducting and piezoelectric nanowire and nanotube arrays hundreds of metres long, with nanowire diameters less than 15nm, are obtained.
The resulting nanostructures are sealed inside a flexi- ble substrate, facilitating the handling of and electri- cal contacting to the nanowires. Inexpensive, high- throughput, multimaterial nanowire arrays pave the way for applications including nanowire-based large- area flexible sensor platforms, phase-changememory, nanostructure-enhanced photovoltaics, semiconduc- tor nanophotonics, dielectric metamaterials,linear and nonlinear photonics and nanowire-enabled high- performance composites.
Mecit Yaman, Tural Khudiyev, Erol Ozgur, Mehmet Ka- nik, Ozan Aktas, Ekin O. Ozgur, Hakan Deniz, Enes Kor- kut & Mehmet Bayindir: Arrays of indefinitely long uni- form nanowires and nanotubes, In: Nature Materials, Vol. 10(2011), No. 7, July 2011, Pages 494-501, DOI:10.1038/ nmat3038: