A facile fiber optic transducer relying on the localized surface plasmon resonance (LSPR) phenomena is reported. It involves a single-ended probe made of an uncladded multimode fiber optics deposited with gold nanoparticles (AuNPs). The reflected spectrum of the device is regulated by the absorption spectral features of the AuNPs, showcasing attenuation bands in visible range. The position of these attenuation bands can be correlated with the external medium refractive index and eventually the presence of bio-chemical compounds attached to the AuNPs. To evaluate the performance of the device, it was tested towards the detection of pesticide Thiram at low concentrations.
Fiber Optic Probes Exploiting Localized Surface Plasmon Resonance for Chemical Detection
Moslemi, Amin;Esposito, Flavio;Campopiano, Stefania;Iadicicco, Agostino
2025-01-01
Abstract
A facile fiber optic transducer relying on the localized surface plasmon resonance (LSPR) phenomena is reported. It involves a single-ended probe made of an uncladded multimode fiber optics deposited with gold nanoparticles (AuNPs). The reflected spectrum of the device is regulated by the absorption spectral features of the AuNPs, showcasing attenuation bands in visible range. The position of these attenuation bands can be correlated with the external medium refractive index and eventually the presence of bio-chemical compounds attached to the AuNPs. To evaluate the performance of the device, it was tested towards the detection of pesticide Thiram at low concentrations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
