In situ observations of crystalline-to-liquid and crystalline-to-gas transitions of substrate-supported Ag nanoparticles
In situ observations of crystalline-to-liquid and crystalline-to-gas transitions of substrate-supported Ag nanoparticles
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DOI：
10.1063/1.3456382
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发表时间：
2010-06-21
影响因子：
4
通讯作者：
Mori, H.
中科院分区：
文献类型：
--
作者：
Chen, C. L.;Lee, J. -G.;Mori, H.
利用原位高分辨透射电子显微镜研究了银纳米粒子在石墨和氧化铝衬底上的相变。结果表明，石墨负载的银纳米粒子在完全消失之前没有发生晶液转变，只有晶气转变;氧化铝负载的银纳米粒子发生晶液转变。在热力学模型的基础上讨论了衬底引起的相变行为的差异。(C)2010年美国物理学会。[doi：10.1063/1.3456382]
The phase transitions of silver nanoparticles on graphite and alumina substrates have been investigated using in situ high-resolution transmission electron microscopy. It was revealed that no crystalline-to-liquid transition, only a crystalline-to-gas transition, took place in graphite-supported silver nanoparticles prior to the complete disappearance of the nanoparticles; crystalline-to-liquid transition did take place in alumina-supported silver nanoparticles. The substrate-induced difference in the phase transition behavior is discussed on the basis of a thermodynamic model. (C) 2010 American Institute of Physics. [doi:10.1063/1.3456382]