Wide dynamic range microwave planar coupled ring resonator for sensing applications

Zarifi, Mohammad H.; Daneshmand, Mojgan

doi:10.1063/1.4953465

Cited by 66 publications

(22 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They operate based on the interaction of electric fields with materials in the sensor’s near soundings. The dielectric properties of materials (permittivity and conductivity) affect the electric field and consequently electrical properties of the resonator such as the resonant amplitude, resonant frequency and quality factor 40 – 42 . The planar structure, simple fabrication process and robustness of microwave resonators make them attractive for a variety of different applications, such as liquid monitoring in oil-sand 43 , 44 , gas sensing for environmental monitoring 45 and studying nanomaterials and nanostructures 43 .…”

Section: Introductionmentioning

confidence: 99%

Noncontact and Nonintrusive Microwave-Microfluidic Flow Sensor for Energy and Biomedical Engineering

Zarifi

Saberi

Hejazi

et al. 2018

Sci Rep

Self Cite

152

View full text Add to dashboard Cite

A novel flow sensor is presented to measure the flow rate within microchannels in a real-time, noncontact and nonintrusive manner. The microfluidic device is made of a fluidic microchannel sealed with a thin polymer layer interfacing the fluidics and microwave electronics. Deformation of the thin circular membrane alters the permittivity and conductivity over the sensitive zone of the microwave resonator device and enables high-resolution detection of flow rate in microfluidic channels using noncontact microwave as a standalone system. The flow sensor has the linear response in the range of 0-150 µl/min for the optimal sensor performance. The highest sensitivity is detected to be 0.5 µl/min for the membrane with the diameter of 3 mm and the thickness of 100 µm. The sensor is reproducible with the error of 0.1% for the flow rate of 10 µl/min. Furthermore, the sensor functioned very stable for 20 hrs performance within the cell culture incubator in 37 °C and 5% CO 2 environment for detecting the flow rate of the culture medium. This sensor does not need any contact with the liquid and is highly compatible with several applications in energy and biomedical engineering, and particularly for microfluidic-based lab-on-chips, micro-bioreactors and organ-on-chips platforms.Microfluidic techniques have been extensively used for efficient manipulation of fluid flow in microscale for biomedical research and analytical chemistry. The control of flow in microfluidic networks is crucial for cell sorting, cell collection, flow mixing, cell adhesion and culture, droplet manipulation and flow driving 1 . Moreover, the flow rate needs to be accurately quantified to determine the concentration of cells 2 , and production of hollow microspheres . A slight change in flow rate may lead to a size variation in the products. To precisely handle fluids at the microscale, the real-time detection of flow rate in microfluidic environment is essential and urgently needed though challenging.Organ-on-a-chip (OOC) technology, in particular, aims to build biomimetic in vitro physiological micro-organs to compliment animal models in biological systems and benefit the pharmaceutical industry for drug discovery 7,8 . Many groups including ours have developed OOC platforms made of microbioreactors and integrated sensors for long-term and real-time monitoring the microenvironment, screening the status of miniaturized organs, and characterizing the response of micro-tissues to drugs [9][10][11][12][13] . The real-time measurement of heat transfer 14 , differential pressure 15 , pH and oxygen 11 and biomarkers 10 are central to biomimetic performance of OOC systems. Miniaturized biosensors provide favorable features like low-cost reagents consumption, decreased processing time, reduced sample volume, laminar flow to cells, parallel detection for multiple samples as well as portability 12,13,16 . However, the OOC systems still need on-chip integrated flow sensors compatible with their fabrication processes and functions 17. The OOC platforms require the...

show abstract

Section: Introductionmentioning

confidence: 99%

Noncontact and Nonintrusive Microwave-Microfluidic Flow Sensor for Energy and Biomedical Engineering

Zarifi

Saberi

Hejazi

et al. 2018

Sci Rep

Self Cite

152

View full text Add to dashboard Cite

show abstract

“…M icrowave resonator sensors have demonstrated significant potential in various applications from oil‐sand analysis to biomedical sensing . Their simple, inexpensive, and robust structure along with noncontact operation make these sensors attractive as a practical sensing tool.…”

Section: Introductionmentioning

confidence: 99%

“…Microwave resonator sensors have demonstrated significant potential in various applications from oil-sand analysis to biomedical sensing. [6][7][8][9] Their simple, inexpensive, and robust structure along with noncontact operation make these sensors attractive as a practical sensing tool. Furthermore, their utility in various environments via electrical field interactions mitigates user intervention of the device, creating increasingly stable results.…”

Section: Introductionmentioning

confidence: 99%

Real‐time monitoring of Escherichia coli concentration with planar microwave resonator sensor

Mohammadi

Narang

Mohammadi

et al. 2019

Micro & Optical Tech Letters

View full text Add to dashboard Cite

This work presents a microfluidic chip integrated with a microwave resonator sensor for real‐time and contactless detection of Escherichia coli bacteria concentration. The design is fabricated on a Rogers RT/duroid 5880 high‐frequency substrate and operates at 2.5 ∼ 2.6 GHz, in the ISM band, with an initial quality factor of 112. The presented sensor demonstrates resonant amplitude sensitivity of −0.01231 dB/log(OD600) and resonant frequency sensitivity of −56 kHz/log(OD600) for E. coli concentration in a constant pH of 7.5. To facilitate the analysis of the proposed structure, a lumped equivalent circuit is presented and simulated in ADS and proven accurate by both HFSS microwave simulations and experimental results.

show abstract

“…The examples of this sensor that apply in their works are microfluidic planar resonator by Chretiennot [9], compact planar resonator by Lee [10], split ring resonator (SSRR) based microwave sensor by Alahnomi [11], and microfluidic circular substrate integrated waveguide CSIW Resonator Sensor by Bahar [12]. Ring resonator structure for microwave sensor is also can be defined as the basic structure that been research by several authors such as coupled ring resonator by Zarifi [13] and microwave ring resonator by Jilani [14],…”

Section: Introductionmentioning

confidence: 99%

Enhancement Coupling Method of Microstrip Ring Resonator (MRR) Design for Different Material Sensor Characterization

2019

IJRTE

View full text Add to dashboard Cite

This work is to design a microstrip ring resonator (MRR) sensor that has the capability to measure the Q-factor and dielectric constant of the selective material. The first step is to design a basic microstrip ring resonator, called Design A. Then the enhancement coupling method of microstrip ring resonator, called Design B is done to improve the performance of the return loss and to ensure the wanted resonant frequency. The performance of this enhancement coupling method of microstrip ring resonator shows of the resonant frequency at 2.096 GHz with the return loss of – 22.063 dB and bandwidth of 10 MHz in between of 2.090 GHz and 2.100 GHz. Using this return loss and the resonant frequency, the Q-factor can be calculated. Then, this microstrip ring resonator with the selective material under test (MUT) or namely as the sample are simulated and compared with the air (εr = 1) as the reference sample. The MUT that apply in this work are Roger 5880 (εr = 2.2), Roger 4350 (εr = 3.48) and FR-4 (εr = 4.4) while the measured dielectric constant that captured are 0.958, 2.163, 3.437, 4.360, respectively.

show abstract

Wide dynamic range microwave planar coupled ring resonator for sensing applications

Cited by 66 publications

References 20 publications

Noncontact and Nonintrusive Microwave-Microfluidic Flow Sensor for Energy and Biomedical Engineering

Noncontact and Nonintrusive Microwave-Microfluidic Flow Sensor for Energy and Biomedical Engineering

Real‐time monitoring of Escherichia coli concentration with planar microwave resonator sensor

Enhancement Coupling Method of Microstrip Ring Resonator (MRR) Design for Different Material Sensor Characterization

Contact Info

Product

Resources

About