Review Article
Optical Fiber Sensors Based on Nanoparticle-Embedded Coatings
Table 2
Summary of optical fiber sensors based on LSPR and LMR phenomena.
| Resonance phenomenon | Target | Coating | Deposition technique | Sensitivity parameters | Reference |
| LSPR | HF | Au NPs and silica matrix | Sol-gel | 1% to 5% | [158] |
| LSPR | Hydrogen peroxide | Ag NPs embedded in polyvinyl(alcohol) | Dipping and sintering | 10−8 M | [159] |
| LSPR | Proteins | APTMS, glutaraldehyde/cysteamine + Au NPs (nanocages or nanospheres) | LbL | 11 pM (nanospheres) 8 pM (nanocages) | [12] |
| LSPR | Anti-IgG | Amino silane + Au NPs | Silanization | 0.8 nM | [160] |
| LSPR | Proteins | Poly(ethyleneimine)/Au NPs + poly(sodium 4-styrenesulfonate) | LbL | — | [161] |
| LSPR | Blood glucose | Au NPs + glucose oxidase | LbL | Blood min. volume ~ 150 μL | [162] |
| LSPR | Explosive vapours | Au NPs functionalized with 4-mercaptobenzoic acid, l-cysteine, and cysteamine | Silanization with APTES | <100 nM (23 ppb) LoD ~ 5–10 ppb | [30] |
| LSPR | DNA sequences | Au NPs functionalized with oligonucleotides | LbL | <100 nM | [163] |
| LSPR & LMR | Humidity | Poly(allylamine hydrochloride)/poly(acrylic acid) + Ag NPs | LbL | ~1 nm/RH% | [157] |
| LSPR & LMR | RI | Poly(allylamine hydrochloride)/poly(acrylic acid) + Au NPs | LbL | 4037 nm/RIU LMR 2 1906 nm/RIU LMR 3 | [164] |
| LMR | RI | TiO2 NPs/poly(sodium 4-styrenesulfonate) | LbL | 2872.73 nm/RIU 1987 nm/RIU | [165, 166] |
| LMR | Humidity | TiO2 NPs/poly(sodium 4-styrenesulfonate) | LbL | 1.43 nm/RH% LMR 1 0.97 nm/RH% LMR 2 | [167] |
| LMR | Humidity | Poly(allylamine hydrochloride)/poly(acrylic acid) + Ag NPs | LbL | 0.455 nm/RH% | [168] |
| LMR | VOCs | Poly(allylamine hydrochloride)/Au-Ag nanocompound + sodium dodecyl sulfate | LbL | 0.131 nm/ppm for methanol | [169] |
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