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Transition from core-shell to Janus chemical configuration for bimetallic nanoparticles

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Published copy (DOI)


  • Cyril Langlois
  • Ziyou Li
  • Jun Yuan
  • Damien Alloyeau
  • Jaysen Nelayah
  • David Bochicchio
  • Riccardo Ferrando
  • Christian Ricolleau


Publication details

DatePublished - 7 Jun 2012
Issue number11
Number of pages8
Pages (from-to)3381-8
Original languageEnglish


In order to determine the possibilities to control the chemical configuration of bimetallic nanoparticles, we have considered CuAg nanoparticles synthesized by a physical route as a model in this study. The synthesis was made by pulsed laser deposition under ultra-high vacuum conditions, via a sequential deposition procedure. We show that the temperature of the substrate and the absolute quantity of Ag in a particle are the main parameters that drive the chemical configuration. To explain the transition from a core-shell configuration to a Janus configuration as a function of Ag quantity, we have conducted density-functional theory calculations and atomistic molecular dynamics simulations to investigate the stability of this system. The results are presented together with the experimental observations.

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