Condensed Matter Physics, 2016, vol. 19, No. 2, 23602
The effect of stirring on the heterogeneous nucleation of water and of clathrates of tetrahydrofuran/water mixtures
(Faculty of Science, Engineering and Technology, University of Tasmania, Hobart 7001, Australia)
(Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, San Diego, CA 92093, USA)
The statistics of liquid-to-crystal nucleation are measured for both water and for clathrate-forming mixtures of tetrahydrofuran (THF) and water using an automatic lag time
apparatus (ALTA). We measure the nucleation temperature using this apparatus in which a single sample is repeatedly cooled, nucleated and thawed. The effect of stirring on
nucleation has been evaluated numerically and is discussed. We find that stirring of the solution makes no difference to the nucleation temperature of a given solution in a given tube.
hydrate, THF, nucleation, ALTA, stirring, water