TY - JOUR
T1 - Electron beam nanosculpting of kirkendall oxide nanochannels
AU - El Mel, Abdel Aziz
AU - Molina-Luna, Leopoldo
AU - Buffière, Marie
AU - Tessier, Pierre Yves
AU - Du, Ke
AU - Choi, Chang Hwan
AU - Kleebe, Hans Joachim
AU - Konstantinidis, Stephanos
AU - Bittencourt, Carla
AU - Snyders, Rony
PY - 2014/2/25
Y1 - 2014/2/25
N2 - The nanomanipulation of metal nanoparticles inside oxide nanotubes, synthesized by means of the Kirkendall effect, is demonstrated. In this strategy, a focused electron beam, extracted from a transmission electron microscope source, is used to site-selectively heat the oxide material in order to generate and steer a metal ion diffusion flux inside the nanochannels. The metal ion flux generated inside the tube is a consequence of the reduction of the oxide phase occurring upon exposure to the e-beam. We further show that the directional migration of the metal ions inside the nanotubes can be achieved by locally tuning the chemistry and the morphology of the channel at the nanoscale. This allows sculpting organized metal nanoparticles inside the nanotubes with various sizes, shapes, and periodicities. This nanomanipulation technique is very promising since it enables creating unique nanostructures that, at present, cannot be produced by an alternative classical synthesis route.
AB - The nanomanipulation of metal nanoparticles inside oxide nanotubes, synthesized by means of the Kirkendall effect, is demonstrated. In this strategy, a focused electron beam, extracted from a transmission electron microscope source, is used to site-selectively heat the oxide material in order to generate and steer a metal ion diffusion flux inside the nanochannels. The metal ion flux generated inside the tube is a consequence of the reduction of the oxide phase occurring upon exposure to the e-beam. We further show that the directional migration of the metal ions inside the nanotubes can be achieved by locally tuning the chemistry and the morphology of the channel at the nanoscale. This allows sculpting organized metal nanoparticles inside the nanotubes with various sizes, shapes, and periodicities. This nanomanipulation technique is very promising since it enables creating unique nanostructures that, at present, cannot be produced by an alternative classical synthesis route.
KW - Kirkendall effect
KW - electron beam
KW - nanomanipulation
KW - oxide nanotubes
KW - transmission electron microscopy
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U2 - 10.1021/nn406328f
DO - 10.1021/nn406328f
M3 - Article
AN - SCOPUS:84894631044
SN - 1936-0851
VL - 8
SP - 1854
EP - 1861
JO - ACS Nano
JF - ACS Nano
IS - 2
ER -