| Institute of Physics, VAST | Center for Theoretical Physics | Center for Computational Physics |
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2nd International Workshop on Theoretical
and Computational Physics (IWTCP-2):
Modern methods and latest results in
particle physics, nuclear physics and astrophysics
Buon Ma Thuot, 28-31 July 2014
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ProgrammeConference PresentationP.39 -- Poster, NCTP-39 Date: Wednesday, 30-07-2014 Time: 14h00 - 15h30 Size dependent melting of Silicon nanoparticlesNguyen Thi Thuy Hang HCMC University of Technology Melting of crystalline silicon nanoparticles is studied by molecular dynamics (MD) simulations using Stillinger-Weber potential. Size dependent melting is presented. Models are heated up from a crystalline to a normal liquid state. Temperature dependence of total energy and the Lindemann ratio exhibit a first-order-like behavior of the transition at a melting point. Heat capacity of the system presents a single peak at around the melting point. As the size of the nanoparticles increases, the variation of the melting point becomes more monotonic and the temperature range of bistability shifts to higher temperatures. In large nanoparticles, the proportion of interior atoms increases and the average potential energy per atom converges to the bulk or thinfilm. Presenter: Nguyễn Thị Thúy Hằng |
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Institute of Physics, VAST
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Center for Theoretical Physics |
Center for Computational Physics
© 2012 Center for Theoretical Physics & Center for Computational Physics Institute of Physics, VAST, 10 Dao Tan, Hanoi, Vietnam |