Differential microfluidic sensors based on dumbbell-shaped defect ground structures in microstrip technology: Analysis, optimization, and applications

Paris Vélez; Jonathan Muñoz-Enano; Marta Gil; Javier Mata-Contreras; Ferran Martín

doi:10.3390/s19143189

Differential microfluidic sensors based on dumbbell-shaped defect ground structures in microstrip technology: Analysis, optimization, and applications

Paris Vélez, Jonathan Muñoz-Enano, Marta Gil, Javier Mata-Contreras, Ferran Martín

Research output: Contribution to journal › Article › Research

19 Citations (Scopus)

Abstract

© 2019 by the authors. Licensee MDPI, Basel, Switzerland. A microstrip defect ground structure (DGS) based on a pair of dumbbell-shaped slots is used for sensing. The device is a differential sensor consisting of a pair of mirrored lines loaded with a dumbbell-shaped DGS, and the output variable is the cross-mode transmission coefficient. Such a variable is very sensitive to asymmetries in the line pair, e.g., caused by an asymmetric dielectric load in the dumbbell-shaped DGSs. Therefore, the sensor is of special interest for the dielectric characterization of solids and liquids, or for the measurement of variables related to complex permittivity changes. It is shown in this work that by adding fluidic channels on top of the dumbbell-shaped DGSs, the device is useful for liquid characterization, particularly for the measurement of solute concentration in very diluted solutions. A sensitivity analysis useful for sensor design is carried out in this paper.

Original language	English
Article number	3189
Journal	Sensors (Switzerland)
Volume	19
DOIs	https://doi.org/10.3390/s19143189
Publication status	Published - 2 Jul 2019

Keywords

Defect ground structure (DGS)
Dielectric characterization
Differential sensors
Fluidic sensors
Microstrip technology
Microwave sensors

Access to Document

10.3390/s19143189

Fingerprint Dive into the research topics of 'Differential microfluidic sensors based on dumbbell-shaped defect ground structures in microstrip technology: Analysis, optimization, and applications'. Together they form a unique fingerprint.

Cite this

@article{dd413e0f17eb4da19553622b85088896,

title = "Differential microfluidic sensors based on dumbbell-shaped defect ground structures in microstrip technology: Analysis, optimization, and applications",

abstract = "{\textcopyright} 2019 by the authors. Licensee MDPI, Basel, Switzerland. A microstrip defect ground structure (DGS) based on a pair of dumbbell-shaped slots is used for sensing. The device is a differential sensor consisting of a pair of mirrored lines loaded with a dumbbell-shaped DGS, and the output variable is the cross-mode transmission coefficient. Such a variable is very sensitive to asymmetries in the line pair, e.g., caused by an asymmetric dielectric load in the dumbbell-shaped DGSs. Therefore, the sensor is of special interest for the dielectric characterization of solids and liquids, or for the measurement of variables related to complex permittivity changes. It is shown in this work that by adding fluidic channels on top of the dumbbell-shaped DGSs, the device is useful for liquid characterization, particularly for the measurement of solute concentration in very diluted solutions. A sensitivity analysis useful for sensor design is carried out in this paper.",

keywords = "Defect ground structure (DGS), Dielectric characterization, Differential sensors, Fluidic sensors, Microstrip technology, Microwave sensors",

author = "Paris V{\'e}lez and Jonathan Mu{\~n}oz-Enano and Marta Gil and Javier Mata-Contreras and Ferran Mart{\'i}n",

year = "2019",

month = jul,

day = "2",

doi = "10.3390/s19143189",

language = "English",

volume = "19",

journal = "Sensors",

issn = "1424-3210",

publisher = "Multidisciplinary Digital Publishing Institute",

}

TY - JOUR

T1 - Differential microfluidic sensors based on dumbbell-shaped defect ground structures in microstrip technology: Analysis, optimization, and applications

AU - Vélez, Paris

AU - Muñoz-Enano, Jonathan

AU - Gil, Marta

AU - Mata-Contreras, Javier

AU - Martín, Ferran

PY - 2019/7/2

Y1 - 2019/7/2

N2 - © 2019 by the authors. Licensee MDPI, Basel, Switzerland. A microstrip defect ground structure (DGS) based on a pair of dumbbell-shaped slots is used for sensing. The device is a differential sensor consisting of a pair of mirrored lines loaded with a dumbbell-shaped DGS, and the output variable is the cross-mode transmission coefficient. Such a variable is very sensitive to asymmetries in the line pair, e.g., caused by an asymmetric dielectric load in the dumbbell-shaped DGSs. Therefore, the sensor is of special interest for the dielectric characterization of solids and liquids, or for the measurement of variables related to complex permittivity changes. It is shown in this work that by adding fluidic channels on top of the dumbbell-shaped DGSs, the device is useful for liquid characterization, particularly for the measurement of solute concentration in very diluted solutions. A sensitivity analysis useful for sensor design is carried out in this paper.

AB - © 2019 by the authors. Licensee MDPI, Basel, Switzerland. A microstrip defect ground structure (DGS) based on a pair of dumbbell-shaped slots is used for sensing. The device is a differential sensor consisting of a pair of mirrored lines loaded with a dumbbell-shaped DGS, and the output variable is the cross-mode transmission coefficient. Such a variable is very sensitive to asymmetries in the line pair, e.g., caused by an asymmetric dielectric load in the dumbbell-shaped DGSs. Therefore, the sensor is of special interest for the dielectric characterization of solids and liquids, or for the measurement of variables related to complex permittivity changes. It is shown in this work that by adding fluidic channels on top of the dumbbell-shaped DGSs, the device is useful for liquid characterization, particularly for the measurement of solute concentration in very diluted solutions. A sensitivity analysis useful for sensor design is carried out in this paper.

KW - Defect ground structure (DGS)

KW - Dielectric characterization

KW - Differential sensors

KW - Fluidic sensors

KW - Microstrip technology

KW - Microwave sensors

U2 - 10.3390/s19143189

DO - 10.3390/s19143189

M3 - Article

C2 - 31331078

VL - 19

JO - Sensors

JF - Sensors

SN - 1424-3210

M1 - 3189

ER -