Microfluidic reflective-mode differential sensor based on open split ring resonators (OSRRs)

Abstract This paper proposes a differential sensor based on a pair of open split ring resonators (OSRR) operating in reflection. The output signal is thus the differential reflection coefficient of both resonators, intimately related to their dielectric loading. Thus, for identical loads in both sensing resonators, the individual reflection coefficients are equal, thereby providing an ideally null output signal. By contrast, when unequal dielectric loads truncate the symmetry, the reflection coefficients are different, resulting in a differential output signal related to the level of asymmetry. In order to ease the measurement of the output signal, a rat-race hybrid coupler is used. The OSRR sensing loads are connected to the coupled ports of the hybrid coupler, whereas the input signal is injected to the Δ-port, and the output signal is collected at the isolated port (Σ-port). By this means, the output signal, i.e. the differential reflection coefficient between both sensing loads, is obtained from the transmission coefficient of a simple two-port structure. For experimental validation purposes, the sensor is applied to the measurement of isopropanol content in aqueous solutions, and for that purpose, the sensitive regions are equipped with microfluidic channels.

[1]  Ferran Martin,et al.  Angular Displacement and Velocity Sensors Based on Electric-LC (ELC) Loaded Microstrip Lines , 2014, IEEE Sensors Journal.

[2]  Mohammad H. Zarifi,et al.  3-D Printing Microfluidic Channels With Embedded Planar Microwave Resonators for RFID and Liquid Detection , 2019, IEEE Microwave and Wireless Components Letters.

[3]  David Dubuc,et al.  Modeling and analysis of pairs of open complementary split ring resonators (OCSRRs) for differential permittivity sensing , 2017, 2017 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP).

[4]  Javier Mata-Contreras,et al.  Modeling Metamaterial Transmission Lines Loaded With Pairs of Coupled Split-Ring Resonators , 2015, IEEE Antennas and Wireless Propagation Letters.

[5]  Derek Abbott,et al.  Two-dimensional displacement and alignment sensor based on reflection coefficients of open microstrip lines loaded with split ring resonators , 2014 .

[6]  David Dubuc,et al.  Split Ring Resonator-Based Microwave Fluidic Sensors for Electrolyte Concentration Measurements , 2019, IEEE Sensors Journal.

[7]  Maurizio Bozzi,et al.  Design of Microwave-Based Angular Displacement Sensor , 2019, IEEE Microwave and Wireless Components Letters.

[8]  R. Jakoby,et al.  Artificial transmission lines for high sensitive microwave sensors , 2009, 2009 IEEE Sensors.

[9]  R. Jakoby,et al.  Metamaterial Inspired Microwave Sensors , 2012, IEEE Microwave Magazine.

[10]  F. Medina,et al.  A new LC series element for compact bandpass filter design , 2004, IEEE Microwave and Wireless Components Letters.

[11]  Chin-Lung Yang,et al.  Complementary Split-Ring Resonators for Measuring Dielectric Constants and Loss Tangents , 2014, IEEE Microwave and Wireless Components Letters.

[12]  Kamran Ghorbani,et al.  Differential Sensors Using Microstrip Lines Loaded With Two Split-Ring Resonators , 2018, IEEE Sensors Journal.

[13]  Javier Mata-Contreras,et al.  Modeling and Applications of Metamaterial Transmission Lines Loaded With Pairs of Coupled Complementary Split-Ring Resonators (CSRRs) , 2016, IEEE Antennas and Wireless Propagation Letters.

[14]  Francisco Javier Ferrández Pastor,et al.  Electromagnetic Differential Measuring Method: Application in Microstrip Sensors Developing , 2017, Sensors.

[15]  Ferran Martín,et al.  Microwave Sensors Based on Symmetry Properties of Resonator-Loaded Transmission Lines , 2015, J. Sensors.

[16]  Ferran Martín,et al.  An Analytical Method to Implement High-Sensitivity Transmission Line Differential Sensors for Dielectric Constant Measurements , 2020, IEEE Sensors Journal.

[17]  F. Martín,et al.  Differential Sensing Based on Quasi-Microstrip Mode to Slot-Mode Conversion , 2019, IEEE Microwave and Wireless Components Letters.

[18]  F. Aznar,et al.  Open Complementary Split Ring Resonators (OCSRRs) and Their Application to Wideband CPW Band Pass Filters , 2009, IEEE Microwave and Wireless Components Letters.

[19]  David Dubuc,et al.  Highly-Sensitive Microwave Sensors Based on Open Complementary Split Ring Resonators (OCSRRs) for Dielectric Characterization and Solute Concentration Measurement in Liquids , 2018, IEEE Access.

[20]  J. Naqui,et al.  Symmetry Properties in Transmission Lines Loaded with Electrically Small Resonators , 2016 .

[21]  Javier Mata-Contreras,et al.  Differential Microfluidic Sensors Based on Dumbbell-Shaped Defect Ground Structures in Microstrip Technology: Analysis, Optimization, and Applications , 2019, Sensors.

[22]  D. Abbott,et al.  Displacement Sensor Based on Diamond-Shaped Tapered Split Ring Resonator , 2013, IEEE Sensors Journal.

[23]  David Dubuc,et al.  Microwave Microfluidic Sensor Based on a Microstrip Splitter/Combiner Configuration and Split Ring Resonators (SRRs) for Dielectric Characterization of Liquids , 2017, IEEE Sensors Journal.

[24]  Christophe Fumeaux,et al.  Angular Displacement and Velocity Sensors Based on Coplanar Waveguides (CPWs) Loaded with S-Shaped Split Ring Resonators (S-SRR) , 2015, Sensors.

[25]  Joni Kilpijärvi,et al.  Microfluidic Microwave Sensor for Detecting Saline in Biological Range , 2019, Sensors.

[26]  Derek Abbott,et al.  High-Sensitivity Metamaterial-Inspired Sensor for Microfluidic Dielectric Characterization , 2014, IEEE Sensors Journal.

[27]  D. Dubuc,et al.  A Microwave and Microfluidic Planar Resonator for Efficient and Accurate Complex Permittivity Characterization of Aqueous Solutions , 2013, IEEE Transactions on Microwave Theory and Techniques.

[28]  Chin-Lung Yang,et al.  Noncontact Measurement of Complex Permittivity and Thickness by Using Planar Resonators , 2016, IEEE Transactions on Microwave Theory and Techniques.

[29]  Lixin Ran,et al.  MAGNETIC PROPERTIES OF S-SHAPED SPLIT-RING RESONATORS , 2005 .

[30]  Ferran Martín,et al.  Alignment and Position Sensors Based on Split Ring Resonators , 2012, Sensors.

[31]  Mojgan Daneshmand,et al.  Strongly Enhanced Sensitivity in Planar Microwave Sensors Based on Metamaterial Coupling , 2017, IEEE Transactions on Microwave Theory and Techniques.

[32]  F. Martín,et al.  Differential Sensor Based on Electroinductive Wave Transmission Lines for Dielectric Constant Measurements and Defect Detection , 2020, IEEE Transactions on Antennas and Propagation.

[33]  Javier Mata-Contreras,et al.  Differential-Mode to Common-Mode Conversion Detector Based on Rat-Race Hybrid Couplers: Analysis and Application to Differential Sensors and Comparators , 2020, IEEE Transactions on Microwave Theory and Techniques.

[34]  Kamran Ghorbani,et al.  Transmission Lines Terminated With LC Resonators for Differential Permittivity Sensing , 2018, IEEE Microwave and Wireless Components Letters.

[35]  Ferran Martin,et al.  Transmission Lines Loaded With Bisymmetric Resonators and Their Application to Angular Displacement and Velocity Sensors , 2013, IEEE Transactions on Microwave Theory and Techniques.

[36]  David R. Smith,et al.  Electric-field-coupled resonators for negative permittivity metamaterials , 2006 .

[37]  F. Martín,et al.  Effective negative-/spl epsiv/ stopband microstrip lines based on complementary split ring resonators , 2004, IEEE Microwave and Wireless Components Letters.

[38]  Xiang Zhang,et al.  SAD-Based Stereo Vision Machine on a System-on-Programmable-Chip (SoPC) , 2013, Sensors.

[39]  Miguel Duran-Sindreu,et al.  Implementation of shunt-connected series resonators through stepped-impedance shunt stubs: analysis and limitations , 2011 .

[40]  Omar M. Ramahi,et al.  Material Characterization Using Complementary Split-Ring Resonators , 2012, IEEE Transactions on Instrumentation and Measurement.

[41]  F. Aznar,et al.  Applications of Open Split Ring Resonators and Open Complementary Split Ring Resonators to the Synthesis of Artificial Transmission Lines and Microwave Passive Components , 2009, IEEE Transactions on Microwave Theory and Techniques.

[42]  Ferran Martín,et al.  Novel Sensors Based on the Symmetry Properties of Split Ring Resonators (SRRs) , 2011, Sensors.

[43]  J. Bonache,et al.  Babinet principle applied to the design of metasurfaces and metamaterials. , 2004, Physical review letters.

[44]  Sungjoon Lim,et al.  Complementary Split-Ring Resonator-Loaded Microfluidic Ethanol Chemical Sensor , 2016, Sensors.

[45]  Derek Abbott,et al.  Metamaterial-based microfluidic sensor for dielectric characterization , 2013 .

[46]  Javier Mata-Contreras,et al.  Analytical Method to Estimate the Complex Permittivity of Oil Samples , 2018, Sensors.

[47]  Christian Damm,et al.  Transmission lines loaded with pairs of magnetically coupled stepped impedance resonators (SIRs): Modeling and application to microwave sensors , 2014, 2014 IEEE MTT-S International Microwave Symposium (IMS2014).

[48]  Cunjun Ruan,et al.  High-Sensitivity Microwave Sensor for Liquid Characterization Using a Complementary Circular Spiral Resonator , 2019, Sensors.

[49]  Javier Mata-Contreras,et al.  Splitter/Combiner Microstrip Sections Loaded With Pairs of Complementary Split Ring Resonators (CSRRs): Modeling and Optimization for Differential Sensing Applications , 2016, IEEE Transactions on Microwave Theory and Techniques.

[50]  Ferran Martín,et al.  Artificial Transmission Lines for RF and Microwave Applications: Martín/Artificial Transmission Lines for RF and Microwave Applications , 2015 .

[51]  Javier Mata-Contreras,et al.  Estimation of the complex permittivity of liquids by means of complementary split ring resonator (CSRR) loaded transmission lines , 2017, 2017 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP).

[52]  Derek Abbott,et al.  Rotation Sensor Based on Horn-Shaped Split Ring Resonator , 2013, IEEE Sensors Journal.

[53]  Derek Abbott,et al.  Two-dimensional alignment and displacement sensor based on movable broadside-coupled split ring resonators , 2014 .

[54]  Rolf Jakoby,et al.  Passive chipless wireless sensor for two-dimensional displacement measurement , 2011, 2011 41st European Microwave Conference.

[55]  J. Pendry,et al.  Magnetism from conductors and enhanced nonlinear phenomena , 1999 .