کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4981719 1453842 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic particle packing in freezing colloidal suspensions
ترجمه فارسی عنوان
بسته بندی ذرات پویا در سوسپانسیون های کلوئیدی انجماد
کلمات کلیدی
تعلیق کلوئیدی، انجماد مونتاژ ذرات، در محل آشکار،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
چکیده انگلیسی

In the field of freezing colloidal suspensions, it is important to understand the particle-scale behavior of particle packing. Here, we reveal the dynamics of particle packing by identifying the behavior of each single particle in situ. The typical pattern consists of locally ordered clusters and amorphous defects. The microscopic mechanism of pattern formation is ascribed to the non-equilibrium particle-packing process on the particle scale, described with the dimensionless Péclet number. The macroscopic migration of a particle layer is also revealed by an analytical model involving parameters of freezing speed and initial volume fraction of particles.

(np is number density in close-packed state. V is pulling speed).In the field of freezing colloidal suspensions, it is important to understand the particle-scale behavior of particle packing. Here, we reveal the dynamics of particle packing by identifying the behavior of each single particle in situ. The typical pattern consists of locally ordered clusters and amorphous defects. The microscopic mechanism of pattern formation is ascribed to the non-equilibrium particle-packing process on the particle scale, described with the dimensionless Péclet number. The macroscopic migration of a particle layer is also revealed by an analytical model involving parameters of freezing speed and initial volume fraction of particles.94

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 531, 20 October 2017, Pages 93-98
نویسندگان
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