Growth mechanism for nanotips in high electric fields
Ville Jansson,
Ekaterina Baibuz,
Andreas Kyritsakis
et al.
Abstract:In this work we show using atomistic simulations that the biased diffusion in high electric field gradients may cause growth of nanotips from small surface asperities. It has long been known that atoms on a metallic surface have biased diffusion if electric fields are applied and that microscopic tips may be sharpened using fields, but the exact mechanisms have not been well understood. Our Kinetic Monte Carlo simulation model uses a recently developed theory for how the migration barriers are affected by the … Show more
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