Activation energy of kink incorporation of particles into colloidal crystals with attractive interactions

Masahiro Kanno, Yutaka Tsuboi, Shigeki Matsuo, Yoshihisa Suzuki

Research output: Contribution to journalArticlepeer-review

Abstract

The kink incorporation and diffusion of particles on the growth interface of colloidal crystals with attractive interactions between particles are important elementary processes. We have successfully estimated the activation energy of kink incorporation, ϵkink, and vibrational frequency, ν, of silica particles on the growth interface using two fundamentally different approaches. One was the use of the Arrhenius plot of step velocities, Vstep, at five temperatures. The other was the use of ν measured by the direct observation of particle movements with a high-speed camera. Although ν and ϵkink took similar values for both approaches, the errors of ν and ϵkink are smaller for the direct observation case than those obtained by the Arrhenius plot. This study is the first to estimate quantitively the activation energy of kink incorporation and the vibrational frequency of particles on the growth interface of a colloidal crystal. These findings would contribute significantly to the understanding of crystal growth mechanisms.

Original languageEnglish
Pages (from-to)1828-1832
Number of pages5
JournalCrystEngComm
Volume25
Issue number12
DOIs
Publication statusPublished - 2023 Mar 2

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

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