Research into the rationality and the application scopes of different melting models of nanoparticles

Fu, Qingshan; Xue, Yongqiang; Cui, Zixiang; Duan, Huijuan

doi:10.1007/s11051-017-3960-1

Cited by 7 publications

(1 citation statement)

References 50 publications

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“…However even with a million atoms, the total energy would be shifted by 1% in the conservative scenario where the energy of a surface atom is 9/12ths that of the bulk. Pawlow's scaling laws -the systematic depression of melting point as the particle size decreases -are nothing other than a consequence of such arguments, and indeed, other thermodynamic treatments of melting exist, such as the models of Reiss, [12] or Rie [13] which incorporate the solid-liquid interface as much as surfaces [14]. The universality of scaling unifies the melting of many different substances, as the interplay between size and relative surface energies simply means that the size at which the phenomenon becomes physically observable varies, but not the phenomenon itself.…”

Section: Melting Point Depressionmentioning

confidence: 99%

Cluster melting: new, limiting, and liminal phenomena

Gaston

2018

Advances in Physics: X

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The thermodynamic behaviour of clusters and nanoscale structures is both a challenge to the statistical basis of the theory, and of paramount importance to experiment. In this review, the competing influences that determine the melting temperature and behaviour of small atomic clusters is discussed, with reference to both experiment and theory. The liminal spaces between solid and liquid, the non-scaling and scaling regimes, and the metallic and non-metallic states are discussed, and presented as a primary cause of the emergence of new phenomena. Particular emphasis is given to recent theoretical work that combines each of these liminal regions and enables, through first principles calculations of dynamic atomic interactions in Born Oppenheimer molecular dynamics, the explanation of greater than bulk melting temperatures in certain atomic cluster systems. Some perspective is also given on the important questions in nanoscale thermodynamics that remain to be addressed. ARTICLE HISTORY

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Section: Melting Point Depressionmentioning

confidence: 99%

Cluster melting: new, limiting, and liminal phenomena

Gaston

2018

Advances in Physics: X

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Size‐Dependence of the Melting Temperature of Individual Au Nanoparticles

Schlexer

Andersen

Sebők

et al. 2019

Part & Part Syst Charact

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Nanoparticles have an immense importance in various fields, such as medicine, catalysis, and various technological applications. Nanoparticles exhibit a significant depression in melting point as their size goes below ≈10 nm. However, nanoparticles are frequently used in high temperature applications such as catalysis where temperatures often exceed several 100 degrees which makes it interesting to study not only the melting temperature depression, but also how the melting progresses through the particle. Using high‐resolution transmission electron microscopy, the melting process of gold nanoparticles in the size range of 2–20 nm Au nanoparticles combined with molecular dynamics studies is investigated. A linear dependence of the melting temperature on the inverse particle size is confirmed; electron microscopy imaging reveals that the particles start melting at the surface and the liquid shell formed then rapidly expands to the particle core.

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Molecular Dynamics Study on the Mechanism of Nanoparticle Phase Change Caused by Collision with Wall Surface

Wang

Zhang

2022

J. Therm. Sci.

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Research into the rationality and the application scopes of different melting models of nanoparticles

Cited by 7 publications

References 50 publications

Cluster melting: new, limiting, and liminal phenomena

Cluster melting: new, limiting, and liminal phenomena

Size‐Dependence of the Melting Temperature of Individual Au Nanoparticles

Molecular Dynamics Study on the Mechanism of Nanoparticle Phase Change Caused by Collision with Wall Surface

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