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崔健磊,杨立军,王 扬.银纳米粒子熔化的尺寸效应研究[J].稀有金属材料与工程(英文),2014,43(2):369~374.[Cui Jianlei,Yang Lijun,Wang Yang.Size Effect of Melting of Silver Nanoparticles[J].Rare Metal Materials and Engineering,2014,43(2):369~374.]
Size Effect of Melting of Silver Nanoparticles
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Received:January 15, 2013  
DOI:
Key words: melting  Ag nanoparticles  size effect  molecular dynamics
Foundation item:国家自然科学基金(90923041, 51275122);微系统与微结构制造教育部重点实验室(哈尔滨工业大学)开放基金(HIT.LOF.2011041);中央高校基本科研业务费专项资金 (HIT.NSRIF.201171);高等学校学科创新引智计划 (B07018)
Author NameAffiliation
Cui Jianlei Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150001, China 
Yang Lijun Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150001, China 
Wang Yang Harbin Institute of Technology, Harbin 150001, China 
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Abstract:
      In order to study the size effect of melting of silver nanoparticles, the melting process of silver nanoparticles of different sizes were simulated by molecular dynamics in this paper. Simulation results show that the system potential energy has an obvious mutation within a certain temperature range when solid state transforms into liquid state, which is similar to amorphous body. And, the melting temperature of nanoparticles is significantly lower than that of the bulk materials and the melting point decreases with the reduction in the size of nanoparticles. The dominant mechanism and the relationship between melting point and nanoparticle size were also analyzed.