研究目的
To propose a compact microfluidic chemical sensor for liquid characterization, demonstrated by the measurement of distilled (DI) water and ethanol liquid mixtures.
研究成果
The proposed CSRRs-loaded QMSIW microfluidic sensor demonstrates high sensitivity and compact size for liquid characterization, with a significant resonance frequency shift observed between DI water and ethanol. The sensor's functionality as a chemical liquid sensor is validated by the linear response to varying ethanol concentrations.
研究不足
The manual assembly process leads to inaccuracies in the thickness of the double-sided adhesive bonding tape, affecting the final results. The sensor's performance is also sensitive to temperature variations.
1:Experimental Design and Method Selection:
The design is based on a microstrip line-fed QMSIW resonator loaded with two concentric CSRRs for compact size and enhanced sensitivity.
2:Sample Selection and Data Sources:
DI water and ethanol liquid mixtures are used for demonstration.
3:List of Experimental Equipment and Materials:
Rogers RT/Duroid 5880 substrate, PDMS for microfluidic channel, Vector Network Analyzer (VNA, Agilent 8722ES) for S parameters measurement.
4:Experimental Procedures and Operational Workflow:
Fabrication of the sensor, integration with microfluidic channel, injection of liquid samples, and measurement of S parameters.
5:Data Analysis Methods:
Analysis of resonance frequency shift and quality factor changes with varying ethanol concentrations.
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