Propane/butane semiconductor gas sensor with low power consumption

Kim, Jong H.; Sung, Jae Suk; Son, Young M.; Vasiliev, A. A.; Малышев, В. В.; Koltypin, E.A.; Eryshkin, A.V.; Godovski, D.Yu.; Pisyakov, A.V.; Yakimov, S. S.

doi:10.1016/s0925-4005(97)00237-2

Cited by 28 publications

(10 citation statements)

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“…This green tape has minimum thickness of about 100 m. Because of this thickness and because of the application of screen-printing for the fabrication of microhotplate elements, the microhotplates are characterized by relatively high heating power consumption equal to 600 mW at 400 0 C, as it was reported by Kita et al (2000). This power consumption is even higher that power consumption of traditional thick film gas sensors reported by Kim et al (1997).…”

Section: Main Textmentioning

confidence: 77%

Fabrication of MEMS Platform for Sensors Applications by Laser Micro Engraving

et al. 2015

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The target of this work is the demonstration of advanced approaches able to provide rapid prototyping by using laser technology ceramic MEMS platforms for chemical sensor operating under harsh environmental conditions and, on the other hand, to assure microhotplate stable at high temperature, which can be used for the deposition of high working temperature gas sensing materials, for example, oxides of tin, gallium, zirconium and hafnium. As substrate ceramic material in work using alumina oxide

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Section: Main Textmentioning

confidence: 77%

Fabrication of MEMS Platform for Sensors Applications by Laser Micro Engraving

et al. 2015

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“…The sensing ink was made by mortar mixing of pure SnO 2 powder (without any catalyst decoration) with a solution of ethyl cellulose in terpineol. This vehicle is usable as a rule for the preparation of inks for screen printing [ 22 ]. The viscosity of the ink was adjusted for easy deposition of the ink by dispensing.…”

Section: Methodsmentioning

confidence: 99%

Reducing Humidity Response of Gas Sensors for Medical Applications: Use of Spark Discharge Synthesis of Metal Oxide Nanoparticles

Vasiliev

Varfolomeev

Волков

et al. 2018

Sensors

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The application of gas sensors in breath analysis is an important trend in the early diagnostics of different diseases including lung cancer, ulcers, and enteric infection. However, traditional methods of synthesis of metal oxide gas-sensing materials for semiconductor sensors based on wet sol-gel processes give relatively high sensitivity of the gas sensor to changing humidity. The sol-gel process leading to the formation of superficial hydroxyl groups on oxide particles is responsible for the strong response of the sensing material to this factor. In our work, we investigated the possibility to synthesize metal oxide materials with reduced sensitivity to water vapors. Dry synthesis of SnO2 nanoparticles was implemented in gas phase by spark discharge, enabling the reduction of the hydroxyl concentration on the surface and allowing the production of tin dioxide powder with specific surface area of about 40 m2/g after annealing at 610 °C. The drop in sensor resistance does not exceed 20% when air humidity increases from 40 to 100%, whereas the response to 100 ppm of hydrogen is a factor of 8 with very short response time of about 1 s. The sensor response was tested in mixtures of air with hydrogen, which is the marker of enteric infections and the marker of early stage fire, and in a mixture of air with lactate (marker of stomach cancer) and ammonia gas (marker of Helicobacter pylori, responsible for stomach ulcers).

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“…[19]. It was obtained from tin (II) sulfate by hydrolysis and H 2 O 2 oxidation under controlled pH and temperature conditions.…”

Section: Methodsmentioning

confidence: 99%