A humidity sensor using ionic copolymer and its application to a humidity-temperature sensor module

Tsuchitani, Shigeki; Sugawara, Takuo; Kinjo, Noriyuki; Ohara, Shuichi; Tsunoda, Teruo

doi:10.1016/0250-6874(88)81507-5

Cited by 30 publications

(12 citation statements)

References 5 publications

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“…They respond to water vapour variations by increasing their ionic mobility or charge carrier concentration from low to high [125,126]. Polyelectrolytes can be made from salts, acids and bases.…”

Section: Impedance Type Humidity Sensors (Resistive)mentioning

confidence: 99%

Humidity Sensors Principle, Mechanism, and Fabrication Technologies: A Comprehensive Review

Farahani

Wagiran

Hamidon

2014

Sensors

1,024

562

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Humidity measurement is one of the most significant issues in various areas of applications such as instrumentation, automated systems, agriculture, climatology and GIS. Numerous sorts of humidity sensors fabricated and developed for industrial and laboratory applications are reviewed and presented in this article. The survey frequently concentrates on the RH sensors based upon their organic and inorganic functional materials, e.g., porous ceramics (semiconductors), polymers, ceramic/polymer and electrolytes, as well as conduction mechanism and fabrication technologies. A significant aim of this review is to provide a distinct categorization pursuant to state of the art humidity sensor types, principles of work, sensing substances, transduction mechanisms, and production technologies. Furthermore, performance characteristics of the different humidity sensors such as electrical and statistical data will be detailed and gives an added value to the report. By comparison of overall prospects of the sensors it was revealed that there are still drawbacks as to efficiency of sensing elements and conduction values. The flexibility offered by thick film and thin film processes either in the preparation of materials or in the choice of shape and size of the sensor structure provides advantages over other technologies. These ceramic sensors show faster response than other types.

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Section: Impedance Type Humidity Sensors (Resistive)mentioning

confidence: 99%

Humidity Sensors Principle, Mechanism, and Fabrication Technologies: A Comprehensive Review

Farahani

Wagiran

Hamidon

2014

Sensors

1,024

562

View full text Add to dashboard Cite

show abstract

“…A number of approaches have so far been investigated for solving the shortcomings of instability at high humidity; these include graft polymerization [6,[10][11][12], crosslinking [13,14], coating with a protective organosilane film [15], interpenetrating polymer network (IPN) technique [16] and employment of organic/inorganic composite materials [17][18][19][20][21][22]. Carbon nanotubes (CNTs) have self-assembled nanoscale tubular structures of carbon atoms.…”

Section: Introductionmentioning

confidence: 99%

Electrical and humidity sensing properties of carbon nanotubes-SiO2-poly(2-acrylamido-2-methylpropane sulfonate) composite material

Huang

2006

Sensors and Actuators B: Chemical

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“…The use of hydrophobic polymers as active sensing materials for nonpolar substances and particular hydrocarbons has been reported in the past whereas hydrophilic polymeric materials are used for polar compounds, for example, for the detection of humidity . In the case of ammonia, sensing at a ppm detection limit has been reached by using metal oxide sensors, although a lack in selectivity to a particular gas is reported, and an elevated temperature process of about 400 °C is needed, which is prohibitive for demanding and dangerous industrial environments.…”

Section: Introductionmentioning

confidence: 99%

Amphiphilic diblock copolymer‐based multiagent photonic sensing scheme

Αθανασέκος

Sachat

Pispas

et al. 2013

J Polym Sci B Polym Phys

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Efficient functionalization of polymer optical fibers' (POF) surface by a novel block copolymer material toward the development of low‐cost multiagent sensors is presented. The employed poly(styrene sulfonate‐b‐tert‐butylstyrene) (SPS‐b‐PtBS) diblock copolymer possesses two blocks of distinctively different polarity and charge, the hydrophilic SPS which is sensitive to polar substances and the hydrophobic PtBS which is sensitive to organic solvents. The coexistence of two different blocks allows for the detection of a wide variety of agents, ranging from ammonia, and organic solvents, to biomolecules like lysozyme, at room temperature as opposed to alternative usually more complicated techniques, all with the sole use of one sensing medium. Copolymers' high glass transition temperature enables the formation of stable and environmentally robust overlayers. The sensing performance of the material is evaluated experimentally on the customizable platform of POFs, demonstrating fast response, high operational reversibility, and also reusability in successively different testing agents. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 46–54

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A humidity sensor using ionic copolymer and its application to a humidity-temperature sensor module

Cited by 30 publications

References 5 publications

Humidity Sensors Principle, Mechanism, and Fabrication Technologies: A Comprehensive Review

Humidity Sensors Principle, Mechanism, and Fabrication Technologies: A Comprehensive Review

Electrical and humidity sensing properties of carbon nanotubes-SiO2-poly(2-acrylamido-2-methylpropane sulfonate) composite material

Amphiphilic diblock copolymer‐based multiagent photonic sensing scheme

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