ArticleScientific reports2019
A Pixelated Microwave Near-Field Sensor for Precise Characterization of Dielectric Materials.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- A Novel 3D Probe for Near-Field Scanning Microwave Microscopy.Sensors (Basel, Switzerland) · 2026Article
- Searching for Multimode Resonator Topologies with Adaptive Differential Evolution.Sensors (Basel, Switzerland) · 2025Article
- A Discussion on Sensitivity Optimization in Reflective-Mode Phase-Variation Permittivity Sensors Based on Semi-Lumped Resonators.Sensors (Basel, Switzerland) · 2025Article
- A Microwave Differential Dielectric Sensor Based on Mode Splitting of Coupled Resonators.Sensors (Basel, Switzerland) · 2024Article
- A Highly Sensitive 3D Resonator Sensor for Fluid Measurement.Sensors (Basel, Switzerland) · 2023Article
- Sensing High 17β-Estradiol Concentrations Using a Planar Microwave Sensor Integrated with a Microfluidic Channel.Biosensors · 2023Article
- Dual-Square-Split-Ring-Enclosed Microstrip-Based Sensor for Noninvasive Label-Free Detection.Materials (Basel, Switzerland) · 2022Article
- Techniques to Improve the Performance of Planar Microwave Sensors: A Review and Recent Developments.Sensors (Basel, Switzerland) · 2022Review
- A Novel Coupling Mechanism for CSRRs as Near-Field Dielectric Sensors.Sensors (Basel, Switzerland) · 2022Article
- Ternary optimization for designing metasurfaces.Scientific reports · 2021Article
- Microwave Spoof Surface Plasmon Polariton-Based Sensor for Ultrasensitive Detection of Liquid Analyte Dielectric Constant.Sensors (Basel, Switzerland) · 2021Article
- Patch antenna sensor for wireless ice and frost detection.Scientific reports · 2021Article
- Microwave resonator array with liquid metal selection for narrow band material sensing.Scientific reports · 2021Article
- In-situ monitoring for liquid metal jetting using a millimeter-wave impedance diagnostic.Scientific reports · 2020Article
- Intelligent Sensing Using Multiple Sensors for Material Characterization.Sensors (Basel, Switzerland) · 2019Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A highly sensitive microwave near-field sensor based on electrically-small planar resonators is proposed for highly accurate characterization of dielectric materials. The proposed sensor was developed in a robust complete-cycle topology optimization procedure wherein first the sensing area was pixelated. By maximizing the sensitivity as our goal, a binary particle swarm optimization algorithm was applied to determine whether each pixel is metalized or not. The outcome of the optimization is a pixelated pattern of the resonator yielding the maximum possible sensitivity. A curve fitting method was applied to the full-wave simulation results to derive a closed form expression for extracting the dielectric constant of a chemical material from the shift in the resonance frequency of the sensor. As a proof of concept, the sensor was fabricated and used to measure the permittivity of two known liquids (cyclohexane and chloroform) and their mixtures with different volume ratios. The experimentally extracted dielectric constants were in an excellent agreement with the reference data (for pure cyclohexane and chloroform) or those obtained by mixture formulas.
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