ArticleSensors (Basel, Switzerland)2021
Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR).
Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 40 citations in OpenAlex.
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- Capacitively Coupled CSRR and H-Slot UHF RFID Antenna for Wireless Glucose Concentration Monitoring.Sensors (Basel, Switzerland) · 2025Article
- Supercell-enhanced multimodal plasmonic sensor for high-fidelity antigen detection via refractive index modulation.Scientific reports · 2025Article
- Ultrasensitive miniaturized planar microwave sensor for characterization of water-alcohol mixtures.Scientific reports · 2023Article
- Quad-Band Metamaterial Perfect Absorber with High Shielding Effectiveness Using Double X-Shaped Ring Resonator.Materials (Basel, Switzerland) · 2023Article
- An Improved Split-Ring Resonator-Based Sensor for Microfluidic Applications.Sensors (Basel, Switzerland) · 2022Article
- Body-Centered Double-Square Split-Ring Enclosed Nested Meander-Line-Shaped Metamaterial-Loaded Microstrip-Based Resonator for Sensing Applications.Materials (Basel, Switzerland) · 2022Article
- Miniaturized Sensors for Detection of Ethanol in Water Based on Electrical Impedance Spectroscopy and Resonant Perturbation Method-A Comparative Study.Sensors (Basel, Switzerland) · 2022Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
A complex permittivity characterization method for liquid samples has been proposed. The measurement is carried out based on a self-designed microwave sensor with a split ring resonator (SRR), the unload resonant frequency of which is 5.05 GHz. The liquid samples in capillary are placed in the resonant zone of the fabricated senor for high sensitivity measurement. The frequency shift of 58.7 MHz is achieved when the capillary is filled with ethanol, corresponding a sensitivity of 97.46 MHz/μL. The complex permittivity of methanol, ethanol, isopropanol (IPA) and deionized water at the resonant frequency are measured and calibrated by the first order Debye model. Then, the complex permittivity of different concentrations of aqueous solutions of these materials are measured by using the calibrated sensor system. The results show that the proposed sensor has high sensitivity and accuracy in measuring the complex permittivity of liquid samples with volumes as small as 0.13 μL. It provides a useful reference for the complex permittivity characterization of small amount of liquid chemical samples. In addition, the characterization of an important biological sample (inositol) is carried out by using the proposed sensor.
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