Table 1.
Size and zeta-potential of the carboxylated PS beads in HEPES buffer.
| Size (nm) | Zeta potential (mV) | |
|---|---|---|
| 40 nm | 37 (±0.4) | −14 (±0.4) |
| 100 nm | 90 (±0.4) | −30 (±0.8) |
| 200 nm | 205 (±1.2) | −39 (±0.4) |
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