We report on the properties of a new optical sensing element for organic solvents based on polymeric distributed Bragg reflector (DBR), which can be easily interfaced with optical fibers. The DBR is a periodic stack of alternating Teflon-like and gold nanoparticle/Teflon-like composite layers showing high reflectivity in the optical telecommunication spectral range and sensing proper-ties due to the peculiar absorbing properties of the composite layers. The swelling of the composite layers in presence of organic vapors causes a DBR periodicity change and this results in the shift of the high reflectivity window.
High reflectivity Bragg reflectors based on a gold nanoparticle/Teflon-like composite material as a new approach to the organic solvent detection / A., Convertino; A., Capobianchi; A., Valentini; Cirillo, Emilio Nicola Maria. - In: SENSORS AND ACTUATORS. B, CHEMICAL. - ISSN 0925-4005. - STAMPA. - 100:(2004), pp. 212-215. [10.1016/j.snb.2003.12.024]
High reflectivity Bragg reflectors based on a gold nanoparticle/Teflon-like composite material as a new approach to the organic solvent detection
CIRILLO, Emilio Nicola Maria
2004
Abstract
We report on the properties of a new optical sensing element for organic solvents based on polymeric distributed Bragg reflector (DBR), which can be easily interfaced with optical fibers. The DBR is a periodic stack of alternating Teflon-like and gold nanoparticle/Teflon-like composite layers showing high reflectivity in the optical telecommunication spectral range and sensing proper-ties due to the peculiar absorbing properties of the composite layers. The swelling of the composite layers in presence of organic vapors causes a DBR periodicity change and this results in the shift of the high reflectivity window.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
