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Electron beam assisted field evaporation of insulating nanowires/tubes

Abstract : We demonstrate field evaporation of insulating materials, specifically BN nanotubes and undoped Si nanowires, assisted by a convergent electron beam. Electron irradiation leads to positive charging at the nano-object's apex and to an important increase of the local electric field thus inducing field evaporation. Experiments performed both in a transmission electron microscope and in a scanning electron microscope are presented. This technique permits the selective evaporation of individual nanowires in complex materials. Electron assisted field evaporation could be an interesting alternative or complementary to laser induced field desorption used in atom probe tomography of insulating materials.
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Submitted on : Tuesday, October 8, 2019 - 12:57:27 PM
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Alessandro Siria, Pascal Vincent, Nicholas Blanchard, Antoine Niguès, May Choueib, et al.. Electron beam assisted field evaporation of insulating nanowires/tubes. Applied Physics Letters, 2015, 106, pp.193102. ⟨10.1063/1.4921166⟩. ⟨hal-02308173⟩



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