Optical Thickness Monitoring as a Strategic Element for the Development of SPR Sensing Applications

The importance of the monitoring of thickness and rate deposition is indispensable for the fabrication of thin film sensors, such as SPR sensors. The sensitivity of SPR responses varies with the thickness of the film, as well as the linear range. Thus, in the present work, we presented an experiment...

Full description

Saved in:
Bibliographic Details
Published inSensors (Basel, Switzerland) Vol. 20; no. 7; p. 1807
Main Authors Luna-Moreno, Donato, Sánchez-Álvarez, Araceli, Rodríguez-Delgado, Melissa
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 25.03.2020
MDPI
Subjects
Antigens
biosensor
Glass
Gold
Monitoring
optical constant
optical properties of surfaces
Optical thickness
Rotation
Sensors
surface plasmon resonance
Thin film coatings
Thin films
thin-film coating
United States > US
optical constant
biosensor
thin-film coating
surface plasmon resonance
optical properties of surfaces
Online AccessGet full text

Cover

More Information
Summary:The importance of the monitoring of thickness and rate deposition is indispensable for the fabrication of thin film sensors, such as SPR sensors. The sensitivity of SPR responses varies with the thickness of the film, as well as the linear range. Thus, in the present work, we presented an experimental study of the plasmonic response of Cr/Au thin films deposited onto glass slides by evaporation, based on both a rotation and no-rotation system. The results show that the thickness of the gold film varies from 240 to 620 Å, depending on the glass slide position. The SPR response curves obtained experimentally were compared with simulated plasmonic responses and different parameters such as resonance angle, and the depth, slope and half-width of the SPR curve were analysed.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1424-8220
1424-8220
DOI:10.3390/s20071807