Table 1.
The concentrations of HF solution | The diameters of sol-gel SiO2 of LSPR sensing probes | ||
---|---|---|---|
4.5 mm | 5.4 mm | 5.4 mm | |
Relative RI change rates | |||
0.25% | 0.0047 ± 0.00016 | 0.0040 ± 0.00036 | 0.0022 ± 0.00025 |
0.5% | 0.0074 ± 0.00017 | 0.0060 ± 0.00025 | 0.0040 ± 0.00020 |
1% | 0.0033 ± 0.00008 | 0.0022 ± 0.00012 | 0.0019 ± 0.00012 |
2% | 0.0055 ± 0.00022 | 0.0046 ± 0.00021 | 0.0024 ± 0.00012 |
3% | 0.0114 ± 0.00040 | 0.0084 ± 0.00012 | 0.0055 ± 0.00008 |
4% | 0.0149 ± 0.00012 | 0.0133 ± 0.0008 | 0.0095 ± 0.00037 |