Artículos de revistas
Direct in situ observation of the electron-driven synthesis of Ag filaments on α-Ag2 WO4 crystals
Fecha
2013-04-29Registro en:
Scientific Reports, v. 3.
2045-2322
10.1038/srep01676
WOS:000317581800009
2-s2.0-84876576130
2305581567093057
2354739980406725
0000-0001-9315-9392
Autor
Universidade Estadual Paulista (Unesp)
Interdisciplinary Laboratory of Electrochemistry and Ceramics
Theoretical and Computational Chemistry Group
Institución
Resumen
In this letter, we report, for the first time, the real-time in situ nucleation and growth of Ag filaments on α-Ag2 WO4 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.