Measuring sedimentation profiles for nanoparticle characterization through a square spiral resonator sensor

M. Monteagudo Honrubia, G. Caposciutti, F.J. Herraiz-Martínez, J. Matanza, B. Tellini, R. Giannetti

Sensors Vol. 24, nº. 9, pp. 2735-1 - 2735-14

Summary:

Metallic nanoscale particles attract a growing interest in several fields, thanks to their unique bonding characteristics; applications are appearing in the literature in the fields of, for example, sensor coatings and biochemical compound detection. However, the controlled fabrication of such nanopowders is often cumbersome, especially because their characterization is normally slow, involving procedures such as electron microscopy. On the other hand, microwave sensors based on near-field effects on materials are being developed with high sensitivity and show promising characteristics. In this paper, the authors show how a microwave sensor based on a Square Spiral Resonator can be used to characterize paraffin dispersions of nanoparticles conveniently and cost-effectively.

Spanish layman's summary:

Las partículas metálicas a escala nanométrica están ganando interés debido a sus características de unión únicas. Encuentran aplicaciones en revestimientos de sensores, detección de compuestos bioquímicos y más. Mientras tanto, los sensores de microondas basados en efectos de campo cercano ofrecen alta sensibilidad y prometen una forma económica de caracterizar nanopartículas.

English layman's summary:

Metallic nanoscale particles are gaining interest due to their unique bonding characteristics. They find applications in sensor coatings, biochemical compound detection, and more. Meanwhile, microwave sensors based on near-field effects offer high sensitivity and promise a cost-effective way for characterizing nanoparticles.

Keywords: microwave sensors; permittivity; metallic nanoparticles; sedimentation

JCR Impact Factor and WoS quartile: 3,400 - Q2 (2023)

DOI reference: https://doi.org/10.3390/s24092735

Published on paper: May 2024.

Published on-line: April 2024.

Citation:
M. Monteagudo Honrubia, G. Caposciutti, F.J. Herraiz-Martínez, J. Matanza, B. Tellini, R. Giannetti, Measuring sedimentation profiles for nanoparticle characterization through a square spiral resonator sensor. Sensors. Vol. 24, nº. 9, pp. 2735-1 - 2735-14, May 2024. [Online: April 2024]