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Specifications of SERS substrates.
| SERS Substrates | First Method (A) |
Second Method (B) | Etching Time (min, M) |
Removal of Silver Residues | Re-Immersion Time (s, S) |
|---|---|---|---|---|---|
| A5M | YES | - | 5 | YES | - |
| A30M | YES | - | 30 | YES | - |
| A5M3S | YES | - | 5 | YES | 3 |
| A5M6S | YES | - | 5 | YES | 6 |
| A30M3S | YES | - | 30 | YES | 3 |
| A30M6S | YES | - | 30 | YES | 6 |
| A30M10S | YES | - | 30 | YES | 10 |
| B2M | - | YES | 2 | NO | - |
| B3.5M | - | YES | 3.5 | NO | - |
| B5M | - | YES | 5 | NO | - |
