Table 1.
Overview of measurements
| Technique | Results Elastic/storage modulus (kPa)* | Location of the measurement | Throughput |
|---|---|---|---|
| AFM (tip size, temperature, loading rate) | |||
| conical probe, 25 °C, 6 pm/s | 13.5 ± 7.0 | ||
| conical probe, 37 °C, 2 pm/s | 5.5 ± 0.8 | ||
| 750 nm, 37 °C, 2 pm/s | 0.58 ± 0.23 | At the cell surface | 1 – 20 cells/h |
| 2500 nm, 25 °C, 6 pm/s | 1.31 ± 0.54 | ||
| 2500 nm, 37 °C, 10 pm/s | 0.53 ± 0.52 | ||
| Whole-cell measurements | |||
| Optical stretcher | 0.018 ± 0.024 | Whole suspended cell | 60 – 300 cells/h |
| Parallel plates (1 Hz) | 0.95 ± 0.15 | Whole adherent cell | 6 cells/h |
| Cell monolayer measurements | |||
| Cell monolayer rheology | 4.5 ± 2.2 | Monolayer of cells | 5–6 h/monolayer |
| Bead-based measurements | |||
| Particle tracking microrheology (1 Hz) | 0.0045 ± 0.0004 | Intracellular | 30 cells/h |
| Particle tracking microrheology (30 Hz) | 0.111 ±.002 | ||
| Magnetic twisting cytometry | 1.62 ± 0.11 | At the cell surface | 2000 cells/h |
Elastic moduli derived from AFM represent effective Young’s modulus.