High-sensitivity optical chemosensor based on coated long-period gratings for sub-ppm chemical detection in water (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• High-sensitivity optical chemosensor based on coated long-period gratings for sub-ppm chemical detection in water (Articolo in rivista) (literal)

Anno

• 2005-01-01T00:00:00+01:00 (literal)

Alternative label

• Cusano, A., Pilla, P., Contessa, L., Iadicicco, A., Campopiano, S., Cutolo, A., Giordano, M., Guerra, G. (2005)
  High-sensitivity optical chemosensor based on coated long-period gratings for sub-ppm chemical detection in water
  in Applied physics letters
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Cusano, A., Pilla, P., Contessa, L., Iadicicco, A., Campopiano, S., Cutolo, A., Giordano, M., Guerra, G. (literal)

Pagina inizio

• 1 (literal)

Pagina fine

• 3 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 87 (literal)

Rivista

• Applied physics letters (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Optoelectronic Division, Department of Engineering, University of Sannio, Corso Garibaldi, 104-82100 Benevento, Italy; Institute for Composite and Biomedical Materials , CNR P.le Tecchio, 80-80124 Napoli, Italy; (literal)

Titolo

• High-sensitivity optical chemosensor based on coated long-period gratings for sub-ppm chemical detection in water (literal)

Abstract

• In this work, the use of fiber long-period gratings (LPGs)-coated with nanoscale overlays of Syndiotactic Polystyrene (sPS) in the nanoporous crystalline ä form as specific and highly sensitive chemical sensors for in water monitoring-is proposed. The approach presented here, combines the excellent sorption properties of ä form sPS as a chemosensitive layer with the excellent refractive index sensitivity of LPG-based sensors as ideal transducers. In particular, when overlays with a high refractive index compared with the cladding one are deposited along the grating region, as in this case, the refraction-reflection regime at the cladding-overlay interface occurs. As result of this mechanism, the attenuation bands of coated LPGs would respond to the optical changes induced in the sensitive overlay due to chemical sorption by a significant modification of the peak central wavelength and intensity. The sensitivity depends strongly on the overlay thickness and the grating coupled cladding mode. Here, sensor probes were prepared by using a dip coating technique and a proprietary procedure to obtain the ä form sPS. An experimental demonstration of the sensor capability to perform sub-ppm detection of chloroform in water at room temperature is reported here. Also, the effects of the overlay thickness and the cladding mode order on sensor sensitivity and response time have been numerically and experimentally investigated. (literal)

Prodotto di

• Tecnologie di materiali polimerici, compositi e nanostrutture (SP.P08.013.001) (Modulo)
• Polimeri, compositi e nanostrutture con proprietà funzionali programmate (PM.P02.003.001) (Modulo)
• Institute for composite and biomedical materials (IMCB) (Istituto)

Autore CNR

• MICHELE GIORDANO (Unità di personale interno)

Incoming links:

Autore CNR di

• MICHELE GIORDANO (Unità di personale interno)

Prodotto

• Institute for composite and biomedical materials (IMCB) (Istituto)
• Polimeri, compositi e nanostrutture con proprietà funzionali programmate (PM.P02.003.001) (Modulo)
• Tecnologie di materiali polimerici, compositi e nanostrutture (SP.P08.013.001) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Applied physics letters (Rivista)