Low-power-consumption CO&lt;inf&gt;2&lt;/inf&gt; gas sensor using ionic liquids for green energy management

Honda, Meiji; Takei, Yusuke; Ishizu, Koji; Imamoto, Hiroshi; Itoh, Toshihiro; Maeda, Ryutaro; Matsumoto, Kozo; Shimoyama, Isao

doi:10.1109/icsens.2012.6411572

Cited by 5 publications

(5 citation statements)

References 12 publications

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“…One is the reduction of CO

at the anode and its further oxidation at the cathode, possibly following [ 226 ]:

although—since there is a reasonable amount of doubt about the latter equation and the existence of CO

—most authors did not explicit it, or preferred the R-CO

notation—standing for Reduced -CO

—instead of CO

[ 227 ]. CO

reduction can be measured either by a change in the impedance of the ionic liquid [ 228 , 229 , 230 , 231 , 232 ], or by amperometric or cyclic voltammetry techniques [ 226 , 227 , 233 ].…”

Section: Review Of Co Sensing Techniquesmentioning

confidence: 99%

Carbon Dioxide Sensing—Biomedical Applications to Human Subjects

Dervieux¹,

Théron

Uhring

2021

Sensors

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Carbon dioxide (CO2) monitoring in human subjects is of crucial importance in medical practice. Transcutaneous monitors based on the Stow-Severinghaus electrode make a good alternative to the painful and risky arterial “blood gases” sampling. Yet, such monitors are not only expensive, but also bulky and continuously drifting, requiring frequent recalibrations by trained medical staff. Aiming at finding alternatives, the full panel of CO2 measurement techniques is thoroughly reviewed. The physicochemical working principle of each sensing technique is given, as well as some typical merit criteria, advantages, and drawbacks. An overview of the main CO2 monitoring methods and sites routinely used in clinical practice is also provided, revealing their constraints and specificities. The reviewed CO2 sensing techniques are then evaluated in view of the latter clinical constraints and transcutaneous sensing coupled to a dye-based fluorescence CO2 sensing seems to offer the best potential for the development of a future non-invasive clinical CO2 monitor.

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“…One is the reduction of CO

at the anode and its further oxidation at the cathode, possibly following [ 226 ]:

although—since there is a reasonable amount of doubt about the latter equation and the existence of CO

—most authors did not explicit it, or preferred the R-CO

notation—standing for Reduced -CO

—instead of CO

[ 227 ]. CO

reduction can be measured either by a change in the impedance of the ionic liquid [ 228 , 229 , 230 , 231 , 232 ], or by amperometric or cyclic voltammetry techniques [ 226 , 227 , 233 ].…”

Section: Review Of Co Sensing Techniquesmentioning

confidence: 99%

Carbon Dioxide Sensing—Biomedical Applications to Human Subjects

Dervieux¹,

Théron

Uhring

2021

Sensors

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“…Finally, the authors examined the sensitivity of the above ionic gel-based CO 2 sensor and observed that the above impedance-based electrochemical sensor can measure the difference of a 500-ppm CO 2 gas concentration by using a power as small as 0.65 μW. Further, Shimoyama et al proposed a low power consumption electrochemical CO 2 gas sensor using some imidazolium-based ionic liquids [ 63 ]. The electrical impedance of the ionic liquids was observed to decrease with the increase in the concentration of CO 2 gas.…”

Section: Ionic Liquids In Electrochemical Co 2 mentioning

confidence: 99%

“…For example, a task-specific ionic liquid with an amine (–NH 2 ) group on the cation can capture CO 2 and significantly enhance the solubility of CO 2 in that particular ionic liquid [ 43 ]. A wide range of ionic liquid-based sensors has been developed so far for the detection and quantification of CO 2 gas [ 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 ]. These ionic liquid-based CO 2 sensors are either optical-based [ 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 ] or electrochemical-based sensors [ 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , ...…”

Section: Introductionmentioning

confidence: 99%

“…Other than these optical-based sensing methods, electrochemical techniques are shown to have applications for CO 2 sensing [ 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 ]. There are mainly three types of electrochemical sensors based on the measurement of redox current (amperometric), or the development of a potential (potentiometric), or a change in the electrical impedance (conductometric).…”

Section: Introductionmentioning

confidence: 99%

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Ionic Liquid-Based Optical and Electrochemical Carbon Dioxide Sensors

Behera

Pandey

Kadyan

et al. 2015

Sensors

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Due to their unusual physicochemical properties (e.g., high thermal stability, low volatility, high intrinsic conductivity, wide electrochemical windows and good solvating ability), ionic liquids have shown immense application potential in many research areas. Applications of ionic liquid in developing various sensors, especially for the sensing of biomolecules, such as nucleic acids, proteins and enzymes, gas sensing and sensing of various important ions, among other chemosensing platforms, are currently being explored by researchers worldwide. The use of ionic liquids for the detection of carbon dioxide (CO2) gas is currently a major topic of research due to the associated importance of this gas with daily human life. This review focuses on the application of ionic liquids in optical and electrochemical CO2 sensors. The design, mechanism, sensitivity and detection limit of each type of sensor are highlighted in this review.

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“…We must decide the balance of the resources to meet the different demands in each application such as communication speed, reliability, and multiple accesses. Our group has been developed systems which help to decrease electrical power by monitoring of temperature, humidity, density of CO 2 [6], and electrical power [7] in offices, factories and shops. In this system, necessary communication distance is about 30 m. Thus multi hop communication is not needed.…”

Section: Introductionmentioning

confidence: 99%

M-ary FSK Modulation Using Short Packet without a Preamble and Error Detection Codes for Low Power Wireless Communication

Okada

Itoh²

2014

WSN

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Since power of a wireless sensor node is limited, low power communication technology has been required. M-ary frequency shift keying (MFSK) modulation with orthogonal signals is one of the methods to decrease the power. However, if the amount of transmitted data including such as an identification number (ID) of a node and measured data is small, a ratio of the data length to the total packet length, which means transmission efficiency, becomes quite low. Because a preamble and error check codes are generally added to a packet for synchronization between a transmitter and a receiver and for decrease in reception errors, respectively. In this research, we have developed a method with digital filters which eliminates the other signals from time series frequency spectra not to use a preamble and error check codes. Although estimated synchronization loss of the method was less than 1.6 dB, it was found that the loss of the method on error packet rate was almost 0 dB at more than 0.001 of packet error rate by a simulation made by BASIC. These results indicate a possibility to realize that a packet which consists of only two symbols can be received with no error if the transmitted data is less than 14 bits using 128-FSK.

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Low-power-consumption CO<inf>2</inf> gas sensor using ionic liquids for green energy management

Cited by 5 publications

References 12 publications

Carbon Dioxide Sensing—Biomedical Applications to Human Subjects

Carbon Dioxide Sensing—Biomedical Applications to Human Subjects

Ionic Liquid-Based Optical and Electrochemical Carbon Dioxide Sensors

M-ary FSK Modulation Using Short Packet without a Preamble and Error Detection Codes for Low Power Wireless Communication

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