Simultaneous Detection of Two Chemicals Using a TE20-Mode Substrate-Integrated Waveguide Resonator
Abstract
:1. Introduction
2. Sensor Design
2.1. Theory
2.2. Design of the Dual-Detection Chemical Sensor
2.3. Design and Motivation for Asymmetric Microfluidic Channels
2.4. Optimized Geometry and Shape of the Microfluidic Channels
3. Simulation Analysis
4. Fabrication and Measurement
4.1. Fabrication
4.2. Measurement
4.3. Sensitivity Evaluation
5. Discussion
6. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Parameter | Value | Parameter | Value | Parameter | Value | Parameter | Value |
---|---|---|---|---|---|---|---|
a | 60 | d | 1 | j | 4 | m | 5.25 |
b | 40 | e | 22.2 | k | 0.5 | n | 0.8 |
c | 30.8 | g | 10.85 | l | 1.5 | o | 1 |
p | 1.8 | i | 6 | u | 8.45 | q | 50 |
r | 0.75 | s | 11.15 | v | 0.8 | w | 0.9 |
h | 0.6 | hfilm | 0.05 | hsub | 0.51 |
Ch 1, Ch 2 | Simu. fr [GHz] | Simu. S11 [dB] | Meas. fr [GHz] | Meas. S11 [dB] | Relative Error in fr [%] |
---|---|---|---|---|---|
Air, Air | 8.28 | −25 | 8.26 | −10.79 | 0.24 |
Ethanol, DI water | 7.66 | −16.87 | 7.669 | −15.66 | 0.12 |
DI water, Ethanol | 7.799 | −11.48 | 7.795 | −15.54 | 0.05 |
Ethanol, Ethanol | 7.85 | −8.67 | 7.84 | −12.1 | 0.13 |
DI water, DI water | 7.59 | −14.76 | 7.60 | −19 | 0.13 |
Ref. | fo [GHz] | Δfmax * [MHz] | Technology | Size † | Sensing Application | Sensing |
---|---|---|---|---|---|---|
This work | 8 | 660 | SIW | 2.37 λg × 1.58 λg (60 mm × 40 mm) | Ethanol | Dual |
[7] | 4.65 | 400 | EMSIW | 0.94 λg × 0.9 λg (35 mm × 30 mm) | Ethanol | Single |
[28] | 17.08 | 610 | SIW | 3 λg × 2.61 λg (35 mm × 30 mm) | Ethanol | Single |
[34] | 5 | 380 | SIW | 1.85 λg × 1.85 λg (75 mm × 75 mm) | Ethanol | Single |
[47] | 13.48 | 170 | SIW | 2.26 λg × 1.92 λg (33 mm × 28 mm) | Fibroblast cells | Single |
Ref. | fo [GHz] | Δf * [MHz] | εa ** | εr | S [MHz/εr] | Physical Size | Electrical Size † | Dielectric Constant of Substrate |
---|---|---|---|---|---|---|---|---|
This work | 8 | 430 | 5 | 4 | 107.5 | 60 mm × 40 mm | 2.37 λg × 1.58 λg | 2.2 |
[22] | 3 | 170 | 6 | 5 | 34 | 35 mm × 32 mm | 1.12 λg × 1.02 λg | 10.2 |
[23] | 6.5 | 400 | 5 | 4 | 100 | 30 mm × 22 mm | 1.13 λg × 0.86 λg | 3 |
[24] | 0.87 | 110 | 14 | 13 | 8.46 | 86 mm × 62 mm | 0.8 λg × 0.57 λg | 10.2 |
Ref. | Substrate | Technology | Configuration | Noncontact | Independent Tuning | Detection |
---|---|---|---|---|---|---|
This work | RT/Duroid 5880 | TE20 mode SIW | Unit cell | Yes | No | Dual |
[22] | RT/Duroid 6010.2 LM | MM | Array | No | Yes | Multiple |
[23] | RO3003 | MM | Array | Yes | Yes | Dual |
[24] | RO3010 | MM | Array | Yes | No | Partially dual |
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Salim, A.; Memon, M.U.; Lim, S. Simultaneous Detection of Two Chemicals Using a TE20-Mode Substrate-Integrated Waveguide Resonator. Sensors 2018, 18, 811. https://doi.org/10.3390/s18030811
Salim A, Memon MU, Lim S. Simultaneous Detection of Two Chemicals Using a TE20-Mode Substrate-Integrated Waveguide Resonator. Sensors. 2018; 18(3):811. https://doi.org/10.3390/s18030811
Chicago/Turabian StyleSalim, Ahmed, Muhammad Usman Memon, and Sungjoon Lim. 2018. "Simultaneous Detection of Two Chemicals Using a TE20-Mode Substrate-Integrated Waveguide Resonator" Sensors 18, no. 3: 811. https://doi.org/10.3390/s18030811