Table 2.
Summary of trapping force and contact force measured in x direction for two silica beads in interaction.
| Bead Diameter | Power (mW) | Trap Stiffness (N/m) | Trap Force (pN) | Contact Force (pN) |
|---|---|---|---|---|
| 2 µm | 55.40 | (1.23 ± 0.01) × 10−4 | 6.330 ± 0.030 | - |
| 58.38 | (1.74 ± 0.02) × 10−4 | 6.977 ± 0.039 | - | |
| 69.05 | (1.94 ± 0.02) × 10−4 | 7.180 ± 0.036 | - | |
| 2 µm–4.5 µm | 55.40 | (5.08 ± 0.01) × 10−5 | 2.529 ± 0.022 | 3.801 ± 0.052 |
| 58.38 | (5.63 ± 0.01) × 10−5 | 2.533 ± 0.024 | 4.444 ± 0.063 | |
| 69.05 | (5.77 ± 0.02) × 10−5 | 2.540 ± 0.025 | 4.640 ± 0.061 | |
| 2 µm–2 µm | 61.94 | (2.75 ± 0.01) × 10−5 | 1.340 ± 0.020 | 4.540 ± 0.060 |
| 65.49 | (3.33 ± 0.01) × 10−5 | 1.336 ± 0.021 | 4.560 ± 0.058 | |
| 69.05 | (3.85 ± 0.03) × 10−5 | 1.341 ± 0.018 | 5.840 ± 0.061 |