HAL Id: hal-01831510
https://hal.archives-ouvertes.fr/hal-01831510
Submitted on 5 Jul 2018
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Microwave-based microsensor printed on film for the monitoring of environmental or health-related chemical
compounds
Prince Bahoumina, Hamida Hallil, Jean-Luc Lachaud, Dominique Rebière, Corinne Dejous
To cite this version:
Prince Bahoumina, Hamida Hallil, Jean-Luc Lachaud, Dominique Rebière, Corinne Dejous.
Microwave-based microsensor printed on film for the monitoring of environmental or health-related chemical compounds. Concours Posters GPU, Jan 2017, Talence, France. 2017. �hal-01831510�
Laboratoire de l’Intégration du Matériau au Système
>
www.ims-bordeaux.fr
-18 -16 -14 -12 -10 -8 -6 -4 -2 0
1 2 3 4 5 6
S Parameters (dB)
Frequency (GHz)
S21 REF (dB) S11 REF (dB)
S11 2SENS21 (dB) S21 2SENS21 (dB)
Port 1
Port 2
Port 1
Port 2 1st mode: 2 large active zones
2nd mode: 3 large active zones
GPU – Environnements / SIS
Motivations and general purposes
MDA Team
Prince Bahoumina, Hamida Hallil, Jean-Luc Lachaud, Dominique Rebière, Corinne Dejous
prince.bahoumina@ims-bordeaux.fr ; hamida.hallil@ims-bordeaux.fr
Microwave-based microsensor printed on film for the monitoring of environmental or health-related chemical compounds
Proposed chemical gas sensor based on capacitive microwave resonators flexible paper device
Odors:
VOCs (Formol, Toluene) NH3, H2S
Microbiology:
Bacteria, Viruses, Allergen, Parasites, microorganisms
Atmospheric particulate matter:
PM10, PM2.5
Major primary pollutants: Nox-VOCs, CO, NH3, Sox, Toxic metal
-5,49 -5,485 -5,48 -5,475 -5,47 -5,465 -5,46 -5,455 -5,45 -5,445
0 10 20 30 40 50 60 70 80 90 100
S 21 (dB)
Time (min)
SEQUENCE 1 DEVICE 2 S21 SENS (dB) SEQUENCE 2 DEVICE 2 S21 SENS (dB) 0
ppm
500 ppm
0 ppm
500 ppm
0 ppm
1000 ppm
0 ppm
1000 ppm
0 ppm
2000 ppm
Proposed solution : CArbon and Microwave based Ultrasensitive gas Sensors (CAMUS)
The need for miniature sensors, integrated in all environments, highly selective and sensitive, with low cost and low power consumption, is growing more each year, due to the modernization and increasing global industrialization, which increase environmental and health pollution. This pollution concerns 7 million deaths in 2012, according to World Health Organization (WHO). It is known as a source of irritation, decreased lung capacity and odors. Some of these pollutants are considered carcinogenic, among them volatile organic compounds (VOCs) represent an issue as target compounds. In this context and to respond to this problem, we propose the real-time monitoring and quantification sensor for toxic gas, by combining an electromagnetic transduction resonator with a chemical sensitive layer of carbonaceous material in the frequency band from 0.5 GHz to 6 GHz. This platform is suitable for the Internet of Things and embedded systems, which open revolutionary perspectives to the proliferation of sensing and control sites with communicating wireless sensor networks.
2nd resonant mode (4.8 GHz)
Preliminary results of ethanol detection based on stub microwave resonators flexible kapton device
-16 -14 -12 -10 -8 -6 -4 -2 0
0 1000 2000 3000 4000 5000 6000
S 21 (dB)
Frequency (MHz)
DEVICE 2 REF_S21(dB) DEVICE 2 SENS_S21(dB) 1st resonant
mode (0.6 GHz)
Sensitive resonator
Reference resonator
Experimental results
Design & Simulation
Room temperature detection at first resonant mode (0.6 GHz)
Reference resonator
Sensitive resonator
Microwave resonator device
• Differential detection
• Wireless Communication
• Autonomy (Passive )
• Network of sensors & Easy integration for IoT applications Carbon materials
sensitive layer
• High sensitivity
• Totally integrated
• Room temperature detection
Ink jet Printing Technologies
• Low cost
• planar circuits
• Flexible substrate
dB
f
f dB
Gas molecules Modification of
microwave resonator response
Variation of the electrical properties of carbon materials
Modification of physico chemical properties
Perturbation of electromagnetic wave Sensitive
resonator
Reference resonator
Reference resonator
response Sensitive resonator
response
∆F
∆|GdB|
Advantages
IoT Gateway Cloud &
Big data base
Sensor node 1
Sensor node 2
EMT Gas & humidity
& Temperature &
pressure Sensor
Wired instrumentation sensor system
Wireless instrumentation sensor system
resonant mode (2.4 GHz) Sensitive
Resonator
Lsub
Wsub W
W = 14 mm ; Wsub = 34 mm L = 17.2 mm ; Lsub = 26 mm
Reference Resonator
Sensitive Layer
Conclusions
• Insertion losses increase of -5, -10, -20 mdB for 500, 1000 and 2000 ppm of ethanol vapors respectively
• Sensitivity is estimated at -10 μdB/ppm
• Absorption and desorption time is about 6 min
Prospects
• Make in-depth studies on new samples
• Analyze results to better explain the behavior of the sensor physically and chemically
• Integration in communicating systems for wireless sensor network and Internet of Things (IoT) applications
