TABLE III. The SPR Angle Shift for Various Doses of SARS-COV-2 S-Glycoprotein Solution in Contact With the Graphene/CR3022 Antibody [67].
| Concentration of SARS -CoV-2 S-glyco -protein solution (nM) | Refractive index of SARS -CoV-2 S-glyco -protein solution (RIU) | SPR angle,
 (deg) |
SPR angle shift,
 (deg) |
Cumulative shift of the resonance angle, C
 (deg) |
|---|---|---|---|---|
| 0.0000 | 0.0000 | 77.28 | 0.00 | 0.00 |
| 0.0001 | 0.0220 | 77.32 | 0.04 | 0.04 |
| 0.0010 | 0.0660 | 77.40 | 0.08 | 0.12 |
| 0.0100 | 0.1760 | 77.61 | 0.21 | 0.29 |
| 0.1000 | 0.3080 | 77.87 | 0.26 | 0.51 |
| 1.0000 | 0.4840 | 78.21 | 0.34 | 0.85 |
| 10.000 | 0.7040 | 78.64 | 0.43 | 1.28 |