Abstract
Recent developments allow heat capacities to be measured for size-selected clusters isolated in the gas phase. For clusters with tens to hundreds of atoms, the heat capacities determined as a function of temperature usually have a single peak attributed to a melting transition. The melting temperatures and latent heats show large size-dependent fluctuations. In some cases, the melting temperatures change by hundreds of degrees with the addition of a single atom. Theory has played a critical role in understanding the origin of the size-dependent fluctuations, and in understanding the properties of the liquid-like and solid-like states. In some cases, the heat capacities have extra features (an additional peak or a dip) that reveal a more complex behavior than simple melting. In this article we provide a description of the methods used to measure the heat capacities and provide an overview of the experimental and theoretical results obtained for sodium and aluminum clusters.
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Dates
Type | When |
---|---|
Created | 14 years, 5 months ago (March 2, 2011, 9:41 p.m.) |
Deposited | 3 years, 10 months ago (Oct. 16, 2021, 12:23 p.m.) |
Indexed | 11 months ago (Sept. 16, 2024, 6:36 a.m.) |
Issued | 14 years, 3 months ago (May 5, 2011) |
Published | 14 years, 3 months ago (May 5, 2011) |
Published Print | 14 years, 3 months ago (May 5, 2011) |
@article{Aguado_2011, title={Melting and Freezing of Metal Clusters}, volume={62}, ISSN={1545-1593}, url={http://dx.doi.org/10.1146/annurev-physchem-032210-103454}, DOI={10.1146/annurev-physchem-032210-103454}, number={1}, journal={Annual Review of Physical Chemistry}, publisher={Annual Reviews}, author={Aguado, Andrés and Jarrold, Martin F.}, year={2011}, month=may, pages={151–172} }