A portable low-power integrated current and temperature laser controller for high-sensitivity gas sensor applications

2018 ◽  
Vol 89 (10) ◽  
pp. 103103 ◽  
Author(s):  
Ning Li ◽  
Xuanbing Qiu ◽  
Yongbo Wei ◽  
Enhua Zhang ◽  
Jianshuai Wang ◽  
...  
Keyword(s):  
Low Power ◽  
Gas Sensor ◽  
High Sensitivity ◽  
Sensor Applications

Low-voltage low-power integrated analog lock-in amplifier for gas sensor applications

2010 ◽  
Vol 144 (2) ◽  
pp. 400-406 ◽  
Author(s):  
A. D’Amico ◽  
A. De Marcellis ◽  
C. Di Carlo ◽  
C. Di Natale ◽  
G. Ferri ◽  
...  
Keyword(s):  
Low Power ◽  
Gas Sensor ◽  
Low Voltage ◽  
Sensor Applications ◽  
Lock In

Design and Fabrication of a MEMS-Based Gas Sensor

2009 ◽  
Vol 74 ◽  
pp. 255-258 ◽  
Author(s):  
Jin Ho Yoon ◽  
Jung Sik Kim
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Gas Sensor ◽  
Sol Gel ◽  
High Sensitivity ◽  
Low Power Consumption ◽  
Potential Candidate ◽  
Gas Sensitivity ◽  
Thin Film Layer ◽  
Sol Gel Process

In this study, the micro gas sensor for NOx gas was fabricated by using a MEMS technology and sol-gel process. The sensing electrode and micro heater were designed to be a co-planar typed structure in the Pt thin film layer. The fabricated micro platform had a low power consumption of 67 mW at 2.0 V of heater voltage and 300°C of operating temperature. Indium oxide as a sensing material for NOx gas was synthesized by a sol-gel process with indium isopropoxide. The particle size of synthesized In2O3 was identified as about 50 nm. The maximum gas sensitivity as relative resistance (Rs = Rgas / Rair) occurred at 300°C with the value of 8.0 at 1 ppm NO2 gas. The present study shows that a MEMS-based gas sensor is a potential candidate for the automobile AQS (air quality system) gas sensor with many advantages of small dimension, high sensitivity, short response time and low power consumption.

Low Power Consumption and High Sensitivity Carbon Monoxide Gas Sensor Using Indium Oxide Nanowire

2010 ◽  
Vol 10 (5) ◽  
pp. 3189-3192 ◽  
Author(s):  
S. E. Moon ◽  
H.-Y. Lee ◽  
J. Park ◽  
J.-W. Lee ◽  
N.-J. Choi ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Power Consumption ◽  
Low Power ◽  
Gas Sensor ◽  
Indium Oxide ◽  
High Sensitivity ◽  
Low Power Consumption

Hydrogen gas sensor of Pd‐functionalised AlGaN/GaN heterostructure with high sensitivity and low‐power consumption

2017 ◽  
Vol 53 (17) ◽  
pp. 1200-1202 ◽  
Author(s):  
J.‐H. Choi ◽  
M.‐G. Jo ◽  
S.‐W. Han ◽  
H. Kim ◽  
S.‐H. Kim ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Gas Sensor ◽  
High Sensitivity ◽  
Hydrogen Gas ◽  
Low Power Consumption ◽  
Gan Heterostructure

scholarly journals Improved Sensing Capability of Integrated Semiconducting Metal Oxide Gas Sensor Devices

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 374 ◽  
Author(s):  
Ayoub Lahlalia ◽  
Olivier Le Neel ◽  
Ravi Shankar ◽  
Siegfried Selberherr ◽  
Lado Filipovic
Keyword(s):  
Metal Oxide ◽  
Power Consumption ◽  
Low Power ◽  
Gas Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Low Power Consumption ◽  
Response Characteristics ◽  
The Impact ◽  
Semiconducting Metal Oxide

Semiconducting metal oxide (SMO) gas sensors were designed, fabricated, and characterized in terms of their sensing capability and the thermo-mechanical behavior of the micro-hotplate. The sensors demonstrate high sensitivity at low concentrations of volatile organic compounds (VOCs) at a low power consumption of 10.5 mW. In addition, the sensors realize fast response and recovery times of 20 s and 2.3 min, respectively. To further improve the baseline stability and sensing response characteristics at low power consumption, a novel sensor is conceived of and proposed. Tantalum aluminum (TaAl) is used as a microheater, whereas Pt-doped SnO2 is used as a thin film sensing layer. Both layers were deposited on top of a porous silicon nitride membrane. In this paper, two designs are characterized by simulations and experimental measurements, and the results are comparatively reported. Simultaneously, the impact of a heat pulsing mode and rubber smartphone cases on the sensing performance of the gas sensor are highlighted.

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