Data for Kurita, Ruffner, & Weeks (2012)

Data on monodisperse colloids that crystallize over time

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Important note: Some particles may not exist at all times, but the tracking program has identified them as likely the same particle and thus with a continuous identity. However, it is known that occasionally the tracking program makes mistakes with this.

These data sets were studied in:

"Measuring the size of individual particles from three-dimensional imaging experiments"
R Kurita, DB Ruffner, & ER Weeks, Nature Comm. 3, 1127 (2012).
- Abstract / PDF / arXiv:1112.1460 / journal

Experimental data

As noted in that article, this is the same data set as the "phi = 0.46" data from earlier papers, available here. The distinction is that the earlier papers analyzed the data prior to the formation of significant crystalline nuclei, whereas in our 2012 paper we analyze the full data set to see the crystallization process. Also, the data below includes the particle size, determined in our more recent analysis.

Particle ID numbers are consistent between the file available on this webpage and the file on the other data set page.

Format of data: This is a textfile with seven columns. The columns are (x,y,z,dia,N_o,t,ID). The (x,y,z,diameter) data are in microns. The fifth column corresponds to the N_o variable in our article, which is the number of ordered neighbors the particle has. We use the criterion that N_o > 7 means a particle is crystalline. Each particle has a unique ID number assigned to it. Time t is an integer; to convert to seconds, multiply by the time step listed in the tables describing each data set.

The volume fraction is approximate, despite the three digits of accuracy listed.

Filename volume
fraction time step Comments Figure usage
tr20156sz.txt.gz 0.459 10 s (supercooled liquid; eventually crystallizes) Figures 5 and 6 of Kurita et al. (2012)

Filename	volume fraction	time step	Comments	Figure usage
tr20156sz.txt.gz	0.459	10 s	(supercooled liquid; eventually crystallizes)	Figures 5 and 6 of Kurita et al. (2012)

The mean particle radius for this data is 1.18 microns.

Simulation data

Format of data: The "track" files are textfiles with five columns. The columns are (time,x,y,z,dia). The particles are in the same order at every time. The "size" files are textfiles with two columns: (true radius, estimated radius).

Filename volume
fraction Comments Figure usage
mono-51.txt -- track file
mono-51-size.txt 0.51 Simulated monodisperse sample Figures 3(c) and 4(a) Kurita et al. (2012)
binary-51.txt -- track file
binary-51-size.txt 0.51 Simulated bidisperse sample Figures 3(d) and 4(b) Kurita et al. (2012)

Filename	volume fraction	Comments	Figure usage
mono-51.txt -- track file mono-51-size.txt	0.51	Simulated monodisperse sample	Figures 3(c) and 4(a) Kurita et al. (2012)
binary-51.txt -- track file binary-51-size.txt	0.51	Simulated bidisperse sample	Figures 3(d) and 4(b) Kurita et al. (2012)