Data for Hunter, Edmond, & Weeks, Phys. Rev. Lett. (2014)

Data from experiments studying dense colloidal suspensions confined in droplets.

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Important note for all data sets: 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.

Data from experiments studying dense colloidal suspensions confined in droplets, surrounded by another liquid

These data sets were studied in:

"Boundary mobility controls glassiness of confined colloidal liquids"
GL Hunter, KV Edmond, and ER Weeks, Phys. Rev. Lett. 112, 218302 (2014).
- Abstract / PDF / arXiv:1405.0753 / journal

The data are in the form (x,y,z,t,id) for the phi=0.33 data, and (x,y,t,id) for the phi=0.46 data. That is, the lower volume fraction data are 3D, and the higher volume fraction data are from 2D cross-sections through the midplane of the droplet. t is an integer, to convert to seconds, multiply by the time step (dt) listed below for each file. (x,y,z) are in microns. Each particle has a unique ID number assigned to it (an integer). The samples are bidisperse, but the only particles we track are the large ones. The radii are a_small = 0.532 microns and a_large = 1.08 microns. See our paper for further details.

The "high viscosity outer fluid" had viscosity eta = 15.2 mPa s, and the "low viscosity outer fluid" had viscosity eta = 5.7 mPa s. Droplet radii are indicated by the final four digits of each file: 0540 corresponds to 5.40 um radius, for example.

The data have been processed already to remove any bulk center-of-mass motion of each dropet, as well as any global rotation of each droplet.

volume fraction = 0.33, high viscosity outer fluid

33-highvisc-0540.gz, dt=1.677 s
33-highvisc-0713.gz, dt=1.396 s
33-highvisc-0776.gz, dt=1.600 s
33-highvisc-0886.gz, dt=1.746 s
33-highvisc-1737.gz, dt=1.954 s
volume fraction = 0.33, low viscosity outer fluid
33-lowvisc-0535.gz, dt=1.255 s
33-lowvisc-0703.gz, dt=1.529 s
33-lowvisc-0860.gz, dt=1.607 s
33-lowvisc-1124.gz, dt=2.021 s
33-lowvisc-1700.gz, dt=2.017 s
volume fraction = 0.46, high viscosity outer fluid
46-highvisc-0820.gz, dt=3.0 s
46-highvisc-1163.gz, dt=3.0 s
46-highvisc-1326.gz, dt=3.0 s
46-highvisc-1406.gz, dt=3.0 s [used in Fig. 1(b,d,e)]
46-highvisc-1532.gz, dt=3.0 s
volume fraction = 0.46, low viscosity outer fluid
46-lowvisc-0818.gz, dt=3.0 s
46-lowvisc-0957.gz, dt=3.0 s
46-lowvisc-1176.gz, dt=3.0 s
46-lowvisc-1440.gz, dt=3.0 s [used in Fig. 1(a,c,e)]