RT Journal Article
T1 Stabilization of Polymeric Nanofibers Layers for Use as Real-Time and In-Flow Photonic Sensors
A1 Ponce-Alcántara, Salvador
A1 Martínez-Pérez, Paula
A1 Pérez-Márquez, Ana
A1 Maudes, Jon
A1 Murillo, Nieves
A1 García-Rupérez, Jaime
AB In order to increase the sensitivity of a sensor, the relationship between its volume and the surface available to be functionalized is of great importance. Accordingly, porous materials are becoming very relevant, because they have a notable surface-to-volume ratio. Moreover, they offer the possibility to infiltrate the target substances on them. Among other porous structures, polymeric nanofibers (NFs) layers fabricated by electrospinning have emerged as a very promising alternative to low-cost and easy-to-produce high-performance photonic sensors. However, experimental results show a spectrum drift when performing sensing measurements in real-time. That drift is responsible for a significant error when trying to determine the refractive index variation for a target solution, and, because of that, for the detection of the presence of certain analytes. In order to avoid that problem, different chemical and thermal treatments were studied. The best results were obtained for thermal steps at 190 °C during times between 3 and 5 h. As a result, spectrum drifts lower than 5 pm/min and sensitivities of 518 nm/refractive index unit (RIU) in the visible range of the spectrum were achieved in different electrospun NFs sensors.
SN 1424-3210
YR 2019
FD 2019-09-02
LA eng
NO Ponce-Alcántara , S , Martínez-Pérez , P , Pérez-Márquez , A , Maudes , J , Murillo , N & García-Rupérez , J 2019 , ' Stabilization of Polymeric Nanofibers Layers for Use as Real-Time and In-Flow Photonic Sensors ' , Sensors , vol. 19 , no. 18 , 3847 , pp. 3847 . https://doi.org/10.3390/s19183847
NO Publisher Copyright: © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
DS TECNALIA Publications
RD 3 jul 2024