کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1858914 1037183 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Squeezing-out dynamics in free-standing smectic films
ترجمه فارسی عنوان
پویایی فشرده سازی در فیلم های مستقل سمتیک
کلمات کلیدی
کریستال مایع، فیلم مستقل مستقل
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی


• We model the dynamics of layer transitions.
• We model the thermally activated nucleation of a small hole.
• We model the dynamics of squeezing-out one layer.

We have carried out a theoretical study of the dynamics of the squeezing-out of one layer from the N-layer free-standing smectic film (FSSF) coupled with a meniscus, during the layer-thinning process. Squeezing-out is initiated by a thermally activated nucleation process in which a density fluctuation forms a small void in the center of the circular FSSF. The pressure gradient develops between the squeezed-out and nonsqueezed-out areas and is responsible for the driving out of one or several layer(s) from the N-layer smectic film. The dynamics of the boundary between these areas in the FSSF is studied by the use of the conservation laws for mass and linear momentum with accounting for the coupling between the meniscus and the smectic film. This coupling has a strong effect on the dynamics of the squeezing-out process and may significantly change the time which is needed to completely squeezed-out one or several layer(s) from the N-layer smectic film.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 380, Issue 21, 6 May 2016, Pages 1811–1816
نویسندگان
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