# Changing shapes in the nanoworld

Source: [Changing shapes in the nanoworld](<https://www.sota2.com/research/paper/68fa25012c2a3760193ab9d8>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T10:04:07.587Z

Authors: Nicolas Combe, Pablo Jensen, Alberto Pimpinelli (b) \_\_INSTITUTION\_3\_\_ D\\'epartement de Physique des Mat\\'eriaux, UMR CNRS 5586, Universit\\'e Claude Bernard Lyon-1, France; (b) Lasmea, Universit\\'e Blaise Pascal Clermont-2, France)

Published: 2000-05-05T16:03:23.000Z

## Abstract

What are the mechanisms leading to the shape relaxation of three dimensional crystallites ? Kinetic Monte Carlo simulations of fcc clusters show that the usual theories of equilibration, via atomic surface diffusion driven by curvature, are verified only at high temperatures. Below the roughening temperature, the relaxation is much slower, kinetics being governed by the nucleation of a critical germ on a facet. We show that the energy barrier for this step linearly increases with the size of the crystallite, leading to an exponential dependence of the relaxation time.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/cond-mat/0005113>)

[PDF](<https://arxiv.org/pdf/cond-mat/0005113.pdf>)