Name
Title | ||
|---|---|---|
A Polynomial-Exponent Model for Calibrating the Frequency Response of Photoluminescence-Based Sensors. |
Abstract | ||
|---|---|---|
In this work, we propose a new model describing the relationship between the analyte concentration and the instrument response in photoluminescence sensors excited with modulated light sources. The concentration is modeled as a polynomial function of the analytical signal corrected with an exponent, and therefore the model is referred to as a polynomial-exponent (PE) model. The proposed approach is motivated by the limitations of the classical models for describing the frequency response of the luminescence sensors excited with a modulated light source, and can be considered as an extension of the Stern-Volmer model. We compare the calibration provided by the proposed PE-model with that provided by the classical Stern-Volmer, Lehrer, and Demas models. Compared with the classical models, for a similar complexity (i.e., with the same number of parameters to be fitted), the PE-model improves the trade-off between the accuracy and the complexity. The utility of the proposed model is supported with experiments involving two oxygen-sensitive photoluminescence sensors in instruments based on sinusoidally modulated light sources, using four different analytical signals (phase-shift, amplitude, and the corresponding lifetimes estimated from them). |
Year | DOI | Venue |
|---|---|---|
2020 | 10.3390/s20164635 | SENSORS |
Keywords | DocType | Volume |
calibration,chemical sensor,photoluminescence,oxygen sensing,frequency response,Stern-Volmer model,Lehrer model,Demas model,polynomial-exponent model | Journal | 20 |
Issue | ISSN | Citations |
16 | 1424-8220 | 0 |
PageRank | References | Authors |
0.34 | 0 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Angel de la Torre | 1 | 0 | 0.68 |
| Santiago Medina-Rodríguez | 2 | 0 | 0.68 |
| José C. Segura | 3 | 481 | 38.14 |
| Jorge F Fernández-Sánchez | 4 | 0 | 0.34 |