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Direct in situ observation of the electron-driven synthesis of Ag filaments on α-Ag2WO4 crystals

by Gouveia, A. F. , Volanti, D. P. , Longo, E. , Cavalcante, L. S. , Andrés, J. , Orlandi, M. O. , Varela, J. A. , Longo, V. M.

in 639/301/1023/1024 / 639/301/1034/1038 / 639/638/263/911 / 639/925/357/995 / Crystallization - methods / Electrons / Humanities and Social Sciences / multidisciplinary / Nanoparticles - chemistry / Nanoparticles - radiation effects / Nanoparticles - ultrastructure / Oxides - chemistry / Oxides - radiation effects / Particle Size / Science / Silver - chemistry / Silver - radiation effects / Treatment Outcome / Tungsten - chemistry / Tungsten - radiation effects

2013

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Direct in situ observation of the electron-driven synthesis of Ag filaments on α-Ag2WO4 crystals

by Gouveia, A. F. , Volanti, D. P. , Longo, E. , Cavalcante, L. S. , Andrés, J. , Orlandi, M. O. , Varela, J. A. , Longo, V. M.

2013

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Direct in situ observation of the electron-driven synthesis of Ag filaments on α-Ag2WO4 crystals

by Gouveia, A. F. , Volanti, D. P. , Longo, E. , Cavalcante, L. S. , Andrés, J. , Orlandi, M. O. , Varela, J. A. , Longo, V. M.

2013

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Journal Article

Direct in situ observation of the electron-driven synthesis of Ag filaments on α-Ag2WO4 crystals

Gouveia, A. F.,

Volanti, D. P.,

Longo, E.,

Cavalcante, L. S.,

Andrés, J.,

Orlandi, M. O.,

Varela, J. A.,

Longo, V. M.

2013

Overview

In this letter, we report, for the first time, the real-time in situ nucleation and growth of Ag filaments on α-Ag 2 WO 4 crystals driven by an accelerated electron beam from an electronic microscope under high vacuum. We employed several techniques to characterise the material in depth. By using these techniques combined with first-principles modelling based on density functional theory, a mechanism for the Ag filament formation followed by a subsequent growth process from the nano- to micro-scale was proposed. In general, we have shown that an accelerated electron beam from an electronic microscope under high vacuum enables in situ visualisation of Ag filaments with subnanometer resolution and offers great potential for addressing many fundamental issues in materials science, chemistry, physics and other fields of science.

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Publisher

Nature Publishing Group UK,Nature Publishing Group

Subject

/ Crystallization - methods

/ Electrons

/ Humanities and Social Sciences