Work

Formation of an Icosahedral Structure during the Freezing of Gold Nanoclusters: Surface-Induced Mechanism

Year: 2002

Type: article

Abstract: The freezing behavior of gold nanoclusters was studied by employing molecular dynamics simulations based on the semiempirical embedded-atom method. Investigations of the gold nanoclusters revealed that, just after freezing, ordered nanosurfaces with a fivefold symmetry were formed with interior atoms remaining in the disordered state. Further lowering of temperatures induced nanocrystallization of the interior atoms that proceeded from the surface towards the core region, finally leading to an icosahedral structure. These dynamic processes explain why the icosahedral cluster structure is dominantly formed in spite of its energetic metastability.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.89.275502

Authors: H.-S. Nam, Nong M. Hwang, B. D. Yu, J.-K. Yoon

Institutions: Seoul National University, Korea Research Institute of Standards and Science, University of Seoul

Language: English

Topic: nanoparticles nucleation surface interactions

Subfield: Physical and Theoretical Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2017748530

FWCI: 3.876

Cites: 33

Cited by: 183

Related to: 10