The gas-detection properties of light-emitting diatoms (Articolo in rivista)

Type

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

Label

• The gas-detection properties of light-emitting diatoms (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

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

• 10.1002/adfm.200701124 (literal)

Alternative label

• Lettieri S; Setaro A; De Stefano L; De Stefano M; Maddalena P (2008)
  The gas-detection properties of light-emitting diatoms
  in Advanced functional materials (Print)
  (literal)

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

• Lettieri S; Setaro A; De Stefano L; De Stefano M; Maddalena P (literal)

Pagina inizio

• 1257 (literal)

Pagina fine

• 1264 (literal)

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

• 18 (literal)

Rivista

• Advanced functional materials (Rivista)

Note

• ISI Web of Science (WOS) (literal)

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

• [Lettieri S; Setaro A; Maddalena P] : CNR-INFM Coherentia and Univ Naples Federico 2, I-80126 Naples, Italy [De Stefano L ] : IMM-CNR Via P. Castellino 111, 80131 Naples (Italy) [De Stefano M ] : Environmental Sciences Department, Second University of Naples Via A. Vivaldi 43, 81100 Caserta (Italy) (literal)

Titolo

• The gas-detection properties of light-emitting diatoms (literal)

Abstract

• In recent years, the porous silica structures (frustules) created by living diatoms have been studied for several nanoengineering applications based on biomimetic approaches. We focus on the gas-sensing properties of diatoms: investigation of different species shows that the photoluminescence emission of frustules is affected by even small modifications of the surrounding gas environment, exhibiting a detection limit of few tenths of ppm in the case of nitrogen dioxide. A new understanding of this phenomenon is discussed here in terms of 'static-type' luminescence quenching through suppression of radiative states (most probably surface oxygen vacancies) induced by adsorption of gas molecules. The modeling allows the free energy of desorption to be measured by all-optical means: the value obtained suggests that a chemisorption process is involved, in agreement with the observed absorption/desorption kinetics. The findings encourage investigation of diatoms as low-cost biological transducers for detection of gas species. (literal)

Prodotto di

• Microsistemi optoelettronici in silicio e tecnologie compatibili (MD.P05.014.001) (Modulo)
• Fisica dei materiali nanostrutturati per sensori di gas (MD.P05.016.001) (Modulo)
• Institute for microelectronics and microsystems (IMM) (Istituto)

Autore CNR

• LUCA DE STEFANO (Unità di personale interno)
• PASQUALINO MADDALENA (Persona)
• STEFANO LETTIERI (Persona)

Insieme di parole chiave

• Keywords of "The gas-detection properties of light-emitting diatoms" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute for microelectronics and microsystems (IMM) (Istituto)
• Microsistemi optoelettronici in silicio e tecnologie compatibili (MD.P05.014.001) (Modulo)
• Fisica dei materiali nanostrutturati per sensori di gas (MD.P05.016.001) (Modulo)

Autore CNR di

• PASQUALINO MADDALENA (Persona)
• STEFANO LETTIERI (Persona)
• LUCA DE STEFANO (Unità di personale interno)

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

• Advanced functional materials (Rivista)

Insieme di parole chiave di

• Keywords of "The gas-detection properties of light-emitting diatoms" (Insieme di parole chiave)