Table 1.
Comparison of the optical cross-sections of Au-based nanostructures obtained experimentally by photoacoustic imaging and theoretical calculation, respectively.a
| Cross-section (10-15 m2) |
||||
|---|---|---|---|---|
| Extinction (σe) | Absorption (σa) | σa / σe | ||
| Nanocages (45.0 nm) | Experimental | 7.26 ± 0.06 | 5.96 ± 0.25 | 0.82 ± 0.04 |
| Calculated | 19.88 | 16.26 | 0.82 | |
| Nanocages (32.0 nm) | Experimental | 2.99 ± 0.04 | 3.05 ± 0.12 | 1 ± 0.04 |
| Calculated | 6.39 | 6.02 | 0.94 | |
| Nanorods (44.0 × 19.8 nm2) | Experimental | 2.16 ± 0.02 | 1.87 ± 0.23 | 0.87 ± 0.11 |
| Calculated | 2.15 | 1.83 | 0.85 | |
| Nanospheres (150 nm) | Experimental | 145 ± 14.76 | -b | - |
| Calculated | 99.96 | 5.73 | 0.056 | |
a
All the values were obtained at 638 nm.
b
Not detected with photoacoustic imaging.