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Enhancement factors (EFs) for dimers of Ag nanospheres with the laser polarization parallel (EFdimer-para) and perpendicular (EFdimer-perp) to the dimer’s longitudinal axis, as well as those of the corresponding spheres (EFsphere).
| dsphere (nm) | EFdimer-para | EFdimer-perp | EFsphere |
|---|---|---|---|
| 80.4 ± 4.2 | 1.7 × 108 | 1.5 × 107 | 1.0 × 107 |
| 63.0 ± 3.7 | 9.3 × 107 | 9.2 × 106 | 7.8 × 106 |
| 39.7 ± 3.4 | 3.9 × 107 | 4.6 × 106 | 1.2 × 106 |
