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Comparison of surface roughness with bonding strength using various bonding techniques.
| Surface Roughness (µm) | Bonding Strength (kPa) | ||||
|---|---|---|---|---|---|
| Oxygen Plasma Treatment | UV-Ozone Treatment | PDMS Adhesive and Partially Cured PDMS | |||
| PDMS–Glass | PDMS–PDMS | PDMS–Glass | PDMS–PDMS | PDMS–PDMS and PDMS–Glass | |
| 0.17 | 270 ± 20 | 180 ± 20 | 314 ± 20 | 95 ± 20 | >500 kPa |
| 0.27 | 263 ± 20 | 168 ± 20 | 301 ± 20 | 92 ± 20 | >500 kPa |
| 0.32 | 228 ± 20 | 147 ± 20 | 288 ± 20 | 92 ± 20 | >500 kPa |
| 0.4 | 185 ± 20 | 105 ± 30 | 270 ± 20 | 87 ± 20 | >500 kPa |
