کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1867580 1530625 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Freezing structures of free silver nanodroplets: A molecular dynamics simulation study
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Freezing structures of free silver nanodroplets: A molecular dynamics simulation study
چکیده انگلیسی

Freezing structures of free silver nanodroplets containing different numbers of atoms have been studied by using MD simulation and adopting quantum Sutton–Chen (QSC) potential. It is demonstrated that during most of the solidification processes there are a first order and a continuous phase transitions. By means of the cluster-type index method (CTIM-2) and three dimension graphic techniques, the internal structures of final nanoparticles have been investigated intensively. Besides regular crystalline, decahedral and icosahedral nanoparticles, some very interesting novelty morphologies have also been found. From geometrical views, these novelty structures can be called surface-isomers, because they can be constructed on the base of regular crystalline, decahedral or icosahedral nanoparticles by adding few layers with specific atomic arrangement. These new morphologies have well global (three- or five-fold) symmetry and lower energy than other structures, with same size and one of them is in agreement with the observation in experiment [Phys. Rev. Lett. 92 (2004) 196102].

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 373, Issues 18–19, 20 April 2009, Pages 1667–1671
نویسندگان
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