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Monolithic Microwave-Microfluidic Sensors Made with Low Temperature Co-Fired Ceramic (LTCC) Technology
Karol Malecha1, Laura Jasińska2, Anna Grytsko3
1Faculty of Microsystem Electronics and Photonics, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland. karol.malecha@pwr.edu.pl.
Sensors (Basel, Switzerland)
|February 2, 2019
Summary
This study compares two microwave-microfluidic sensors using low temperature co-fired ceramics (LTCCs). Both sensors demonstrated a linear response to varying concentrations of test fluids, showing promise for chemical sensing applications.
Area of Science:
- Microwave Engineering
- Sensor Technology
- Materials Science
Background:
- Microfluidic sensors operating at microwave frequencies offer potential for sensitive detection.
- Low temperature co-fired ceramics (LTCCs) provide a suitable platform for monolithic microwave-microfluidic sensor fabrication.
Purpose of the Study:
- To compare the performance of two distinct LTCC-based microwave-microfluidic sensor designs.
- To evaluate sensor response to varying concentrations of water/ethanol mixtures and dopamine solutions.
Main Methods:
- Fabrication of two monolithic LTCC-based microwave-microfluidic sensors.
- Characterization of sensor response at Industrial, Scientific, and Medical (ISM) bands (2.45 GHz and 5.8 GHz).
- Testing with varying concentrations of water/ethanol and dopamine in buffer solution.
Main Results:
- Both resonance-based and interferometric LTCC-based microwave-microfluidic sensors were successfully fabricated and tested.
- A linear relationship was observed between sensor response and the concentration of analytes in both test fluids.
- The sensors showed consistent performance across different test fluid compositions.
Conclusions:
- LTCC-based microwave-microfluidic sensors exhibit linear responses suitable for quantitative analysis.
- Both sensor designs are viable for detecting changes in fluid composition using microwave frequencies.
- The developed sensors show potential for various chemical sensing applications.
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