Plasmonic layer as a localized temperature control element for surface plasmonic resonance-based sensors - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Sensors Année : 2021

Plasmonic layer as a localized temperature control element for surface plasmonic resonance-based sensors

Résumé

Surface plasmon resonance (SPR) sensing is a well-established high-sensitivity, label-free and real-time detection technique for biomolecular interaction study. Its primary working principle consists of the measurement of the optical refractive index of the medium that is in close vicinity of the sensor surface. Bio-functionalization techniques allow biomolecular events to be located in such a way. Since optical refractive indices of any medium varies with the temperature, the place where the measurement takes place shall be within a temperature-controlled environment in order to ensure any temperature fluctuation is interpreted as a biomolecular event. Since the SPR measurement probes the sensed medium within the penetration depth of the plasmonic wave, which is less or in the order of 1 µm, we propose to use the metallic film constituting the detection surface as a localized heater aiming at controlling finely and quickly the temperature of the sensed medium. The Joule heating principle is then used and the modeling of the heater is reported as well as its validation by thermal IR imaging. Using water as a demonstration medium, SPR measurement results at different temperatures are successfully compared to the theoretical optical refractive index of water versus temperature.
Fichier principal
Vignette du fichier
Ganesan_sensors-21-02035-v2.pdf (7.92 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03346097 , version 1 (16-09-2021)

Identifiants

Citer

Sivaramakrishnan Ganesan, Sophie Maricot, J.F. Robillard, Etienne Okada, Mohamed-Taieb Bakouche, et al.. Plasmonic layer as a localized temperature control element for surface plasmonic resonance-based sensors. Sensors, 2021, 21 (6), pp.2035. ⟨10.3390/s21062035⟩. ⟨hal-03346097⟩
40 Consultations
17 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More