scholarly journals 1.5.5 Room temperature benzene gas detection using gated lateral BJT with assembled solvatochromic dye

2012 ◽  
Author(s):  
Hang Yuan ◽  
Bo Wang ◽  
Se-Hyuk Yeom ◽  
Dae-Hyuk Kwon ◽  
Shi-Won Kang
Keyword(s):  
Room Temperature ◽  
Gas Detection ◽  
Solvatochromic Dye

Room temperature VOC gas detection using a gated lateral BJT with an assembled solvatochromic dye

2013 ◽  
Vol 187 ◽  
pp. 288-294 ◽  
Author(s):  
Heng Yuan ◽  
Byoung-Ho Kang ◽  
Hyun-Min Jeong ◽  
Hyurk-Choon Kwon ◽  
Se-Hyuk Yeom ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Detection ◽  
Solvatochromic Dye

Photoacoustic spectroscopy for trace gas detection with cryogenic and room-temperature continuous-wave quantum cascade lasers

Open Physics ◽  
2010 ◽  
Vol 8 (2) ◽  
Author(s):  
Virginie Zeninari ◽  
Agnès Grossel ◽  
Lilian Joly ◽  
Thomas Decarpenterie ◽  
Bruno Grouiez ◽  
...  
Keyword(s):  
Detection Limit ◽  
Room Temperature ◽  
Quantum Cascade Lasers ◽  
Gas Detection ◽  
Trace Gas ◽  
Atmospheric Gases ◽  
Trace Gas Detection ◽  
Quantum Cascade ◽  
Cascade Lasers

AbstractThe main characteristics that a sensor must possess for trace gas detection and pollution monitoring are high sensitivity, high selectivity and the capability to perform in situ measurements. The photacoustic Helmholtz sensor developed in Reims, used in conjunction with powerful Quantum Cascade Lasers (QCLs), fulfils all these requirements. The best cell response is # 1200 V W−1 cm and the corresponding ultimate sensitivity is j 3.3 × 10−10 W cm−11 Hz−11/2. This efficient sensor is used with mid-infrared QCLs from Alpes Lasers to reach the strong fundamental absorption bands of some atmospheric gases. A first cryogenic QCL emitting at 7.9 μm demonstrates the detection of methane in air with a detection limit of 3 ppb. A detection limit of 20 ppb of NO in air is demonstrated using another cryogenic QCL emitting in the 5.4 μm region. Real in-situ measurements can be achieved only with room-temperature QCLs. A room-temperature QCL emitting in the 7.9 μm region demonstrates the simultaneous detection of methane and nitrous oxide in air (17 and 7 ppb detection limit, respectively). All these reliable measurements allow the estimated detection limit for various atmospheric gases using quantum cascade lasers to be obtained. Each gas absorbing in the infrared may be detected at a detection limit in the ppb or low-ppb range.

Electrolyte-gated transistor for CO2 gas detection at room temperature

2020 ◽  
Vol 317 ◽  
pp. 128201 ◽  
Author(s):  
Bora Ersöz ◽  
Katrin Schmitt ◽  
Jürgen Wöllenstein
Keyword(s):  
Room Temperature ◽  
Gas Detection ◽  
Co2 Gas

scholarly journals Ammonia Gas Detection by Tannic Acid Functionalized and Reduced Graphene Oxide at Room Temperature

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Sweejiang Yoo ◽  
Xin Li ◽  
Yuan Wu ◽  
Weihua Liu ◽  
Xiaoli Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Tannic Acid ◽  
Room Temperature ◽  
Gas Sensing ◽  
High Sensitivity ◽  
Gas Detection ◽  
Ammonia Gas ◽  
Reduced Graphene

Reduced graphene oxide (rGO) based chemiresistor gas sensor has received much attention in gas sensing for high sensitivity, room temperature operation, and reversible. Here, for the first time, we present a promising chemiresistor for ammonia gas detection based on tannic acid (TA) functionalized and reduced graphene oxide (rGOTA functionalized). Green reductant of TA plays a major role in both reducing process and enhancing the gas sensing properties ofrGOTA functionalized. Our results showrGOTA functionalizedonly selective to ammonia with excellent respond, recovery, respond time, and recovery times.rGOTA functionalizedelectrical resistance decreases upon exposure to NH3where we postulated that it is due to n-doping by TA and charge transfer betweenrGOTA functionalizedand NH3through hydrogen bonding. Furthermore,rGOTA functionalizedhinders the needs for stimulus for both recovery and respond. The combination of greener sensing material and simplicity in overall sensor design provides a new sight for green reductant approach of rGO based chemiresistor gas sensor.

PbS Nanowires-on-Paper Sensors for Room-Temperature Gas Detection

2019 ◽  
Vol 19 (3) ◽  
pp. 846-851 ◽  
Author(s):  
Hao Kan ◽  
Min Li ◽  
Jingting Luo ◽  
Baohui Zhang ◽  
Jingyao Liu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Detection

scholarly journals Screen-Printed Graphite Electrodes as Low-Cost Devices for Oxygen Gas Detection in Room-Temperature Ionic Liquids

Sensors ◽  
2017 ◽  
Vol 17 (12) ◽  
pp. 2734 ◽  
Author(s):  
Junqiao Lee ◽  
Ghulam Hussain ◽  
Craig Banks ◽  
Debbie Silvester
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Low Cost ◽  
Gas Detection ◽  
Room Temperature Ionic Liquids ◽  
Graphite Electrodes ◽  
Oxygen Gas ◽  
Screen Printed

Pulse Wavelength Scan of Room-Temperature Mid-Infrared Distributed Feedback Quantum Cascade Lasers for N 2 O Gas Detection

2006 ◽  
Vol 23 (7) ◽  
pp. 1780-1783 ◽  
Author(s):  
Zhang Yong-Gang ◽  
Xu Gang-Yi ◽  
Li Ai-Zhen ◽  
Li Yao-Yao ◽  
Gu Yi ◽  
...  
Keyword(s):  
Room Temperature ◽  
Quantum Cascade Lasers ◽  
Distributed Feedback ◽  
Gas Detection ◽  
Mid Infrared ◽  
Quantum Cascade ◽  
Cascade Lasers
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