# 🧪 PMMA colloidal glass flow curves (Petekidis, Vlassopoulos & Pusey 2004, Fig. 5)

`dataset id: petekidis2004_fig5`

Steady-state flow curves of hard-sphere PMMA colloidal glasses digitized from Fig. 5 of Petekidis, Vlassopoulos & Pusey, J. Phys.: Condens. Matter 16, S3955-S3963 (2004). Five volume fractions from 0.586 to 0.63. The original figure has normalized axes, so the recorded scale factors were applied: shear rate x 0.158 s^-1, stress x 0.0825 Pa, giving yield stresses of order 1-100 Pa, consistent with hard-sphere colloidal glasses at these volume fractions. One out-of-order digitization point in the 0.596 curve was fixed by sorting.

## 📈 Data

![Data for petekidis2004_fig5](_plots/petekidis2004_fig5.png)

## 🗂️ Metadata

| Field | Value |
| --- | --- |
| Material | Hard-sphere PMMA colloidal suspension |
| Material kind | colloidal glass |
| Source | Petekidis, G.; Vlassopoulos, D.; Pusey, P. N.; Yielding and flow of sheared colloidal glasses; Journal of Physics: Condensed Matter; 2004 |
| DOI | [10.1088/0953-8984/16/38/013](https://doi.org/10.1088/0953-8984/16/38/013) |
| Figure | 5 |
| Measurement type | flow_curve |
| Geometry | not reported |
| Temperature | — |
| Protocol | Steady-state flow curves; original figure axes were normalized (see description). |
| Provenance | literature, digitized: yes |

## 🧫 Samples

| Sample id | Label |
| --- | --- |
| phi_0.63 | φ = 0.63 |
| phi_0.62 | φ = 0.62 |
| phi_0.603 | φ = 0.603 |
| phi_0.596 | φ = 0.596 |
| phi_0.586 | φ = 0.586 |

## 📋 Data columns

| Role | Column | Units |
| --- | --- | --- |
| `x` | `shear_rate_1/s` | 1/s |
| `y` | `stress_Pa` | Pa |
| `sample` | `sample_id` | — |

## 🏷️ Tags

`yield-stress` `colloidal glass` `volume-fraction-series`