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LSPR study of the kinetics of the liquid-solid phase transition in Sn nanoparticles

Markus Schwind (Institutionen för teknisk fysik, Kemisk fysik) ; Vladimir P. Zhdanov (Institutionen för teknisk fysik, Kemisk fysik) ; Igor Zoric (Institutionen för teknisk fysik, Kemisk fysik) ; Bengt Kasemo (Institutionen för teknisk fysik, Kemisk fysik)
Nano Letters (1530-6984). Vol. 10 (2010), 3, p. 931-936.
[Artikel, refereegranskad vetenskaplig]

Using the localized surface plasmon resonance as a probe in solid and liquid Sn nanoparticles of 107 nm diameter and 52 nm height, we have studied their kinetics of melting and freezing at temperature ramps and, for the first time, at fixed temperatures. During temperature ramps, the kinetics exhibit distinct hysteresis. The melting occurs near the bulk melting point while the freezing is observed at much lower temperatures so that the undercooling interval is similar to 130 K. The time scale of the freezing kinetics measured at different fixed temperatures rapidly decreases as the latter are lowered. All these findings have been quantitatively described by assuming the nucleation to occur on the edges of nanoparticles and employing the classical nucleation theory with the corresponding modifications.

Nyckelord: Liquid-solid phase transition, Sn, nanoparticles, kinetics, LSPR, Nanoplasmonic sensing



Denna post skapades 2010-03-10. Senast ändrad 2010-06-01.
CPL Pubid: 117639

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Kemisk fysik (1900-2015)

Ämnesområden

Kemisk fysik

Chalmers infrastruktur

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