コロイド結晶における2次元核形成過程

DOI Web Site

書誌事項

タイトル別名
  • Two-dimensional nucleation in the colloidal crystal
  • コロイド ケッショウ ニ オケル 2ジゲンカク ケイセイ カテイ

この論文をさがす

抄録

<p>  The two-dimensional (2D) nucleation is the predominant growth mechanisms for colloidal crystals whose particle interaction is attractive. The colloidal crystallization in the attractive system has recently been regarded as a promising method to fabricate varieties of complex nano-structures possessing innovative functionality. In the present study, polymers are added to a colloidal suspension to generate a depletion attractive force, and the detailed 2D nucleation process on the terrace of the colloidal crystals is investigated. We first measured the nucleation rate at various area fractions of particles on the terrace, φarea. In situ observations at single-particle resolution enable us to measure the steady-state homogeneous 2D nucleation rate, J, and the critical size of nuclei, r*, and the relationship between them and φarea is found to agree well with classical nucleation theory (CNT). The step free energy, γ, derived from the nucleation theory is found to vary according to the strength of attraction, which is tuned by the concentration of the polymer as a depletant.</p>

収録刊行物

詳細情報 詳細情報について

問題の指摘

ページトップへ