Highly sensitive pH dependent acetone sensor based on ultrananocrystalline diamond materials at room temperature

RSC Advances ◽  
2016 ◽  
Vol 6 (105) ◽  
pp. 102821-102830 ◽  
Author(s):  
Deepa Kathiravan ◽  
Bohr-Ran Huang ◽  
Adhimoorthy Saravanan ◽  
Gerd Keiser ◽  
Chien-Jui Yeh ◽  
...  
Keyword(s):  
Room Temperature ◽  
Electrochemical Sensing ◽  
Sensing Properties ◽  
Sensor Device ◽  
Ultrananocrystalline Diamond ◽  
Highly Sensitive ◽  
Device Applications ◽  
Ph Dependent ◽  
Acetone Sensor

Diamond-based materials often considered inappropriate for sensor device applications, however these robust materials exhibit unpredictable electrochemical sensing properties.

scholarly journals Response of alumina resistance to trace concentrations of acetone vapors at room temperature

2019 ◽  
Vol 70 (7) ◽  
pp. 122-126
Author(s):  
Ján Ivančo ◽  
Yuriy Halahovets ◽  
Monika Benkovičová ◽  
Matej Mičušík ◽  
Jozef Kollár ◽  
...  
Keyword(s):  
Room Temperature ◽  
Temperature Sensing ◽  
Thermal Pretreatment ◽  
Highly Sensitive ◽  
Pretreatment Temperature ◽  
Plausible Mechanism ◽  
Trace Concentrations ◽  
Acetone Sensor

Abstract The study demonstrates that resistivity of an alumina wafer is highly sensitive to trace concentrations of acetone vapors at room temperature. Though, a thermal pretreatment is necessary to precede the room-temperature sensing of acetone vapors, whilst the sensitiveness increases with the pretreatment temperature. This advocates the alumina being suitable for an adequate acetone sensor in the ppm range. A plausible mechanism of the response is discussed.

UV-enhanced NO2 gas sensing properties of polystyrene sulfonate functionalized ZnO nanowires at room temperature

2019 ◽  
Vol 6 (1) ◽  
pp. 176-183 ◽  
Author(s):  
Jing Wang ◽  
Mingying Yu ◽  
Xian Li ◽  
Yi Xia
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Zno Nanowires ◽  
Polystyrene Sulfonate ◽  
Sensing Properties ◽  
Uv Illumination ◽  
Highly Sensitive ◽  
Gas Sensing Properties

PSS-functionalized ZnO nanowires exhibited a highly sensitive, fast, reversible and stable optoelectronic response to NO2 under UV illumination.

scholarly journals A Novel Type Room Temperature Surface Photovoltage Gas Sensor Device

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2919 ◽  
Author(s):  
Monika Kwoka ◽  
Michal Borysiewicz ◽  
Pawel Tomkiewicz ◽  
Anna Piotrowska ◽  
Jacek Szuber
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
Gas Sensing ◽  
Signal To Noise Ratio ◽  
Fast Response ◽  
Surface Photovoltage ◽  
Kelvin Probe ◽  
Sensor Device ◽  
Sensing Material ◽  
Highly Sensitive

In this paper a novel type of a highly sensitive gas sensor device based on the surface photovoltage effect is described. It is based on the Kelvin probe approach. Porous ZnO nanostructured thin films deposited by the direct current (DC) reactive magnetron sputtering method are used as the active gas sensing electrode material. Crucially, the obtained gas sensing material exhibited a nanocoral surface morphology and surface Zn to O non-stoichiometry with respect to its bulk mass. Among other responses, the demonstrated SPV gas sensor device exhibits a high response to an NO2 concentration as low as 1 ppm, with a signal to noise ratio of about 50 and a fast response time of several seconds under room temperature conditions.

Room temperature and highly sensitive acetone sensor based on lead sulfide nanosheets

2021 ◽  
Vol 267 ◽  
pp. 115082 ◽  
Author(s):  
Hamed Dehdashti Jahromi ◽  
Mohammad Kazemi ◽  
Mohammad Hossein Sheikhi
Keyword(s):  
Lead Sulfide ◽  
Room Temperature ◽  
Highly Sensitive ◽  
Acetone Sensor

Controlled Growth and Characterization Ag/ZnO Nanotetrapods for Humidity Sensing

2018 ◽  
Vol 21 (7) ◽  
pp. 462-467
Author(s):  
Babak Sadeghi
Keyword(s):  
Room Temperature ◽  
Zinc Complex ◽  
Water Solution ◽  
Particle Morphology ◽  
Quick Response ◽  
Separation System ◽  
Humidity Sensing ◽  
Sensor Material ◽  
Highly Sensitive

Aim and Objective: Ultrafine Ag/ZnO nanotetrapods (AZNTP) have been prepared successfully using silver (I)–bis (oxalato) zinc complex and 1, 3-diaminopropane (DAP) with a phase separation system, and have been injected into a diethyl/water solution. Materials and Methods: This crystal structure and lattice constant of the AZNTP obtained were investigated by means of a SEM, XRD, TEM and UV-vis spectrum. Results: The results of the present study demonstrated the growth and characterization AZNTP for humidity sensing and DAP plays a key role in the determination of particle morphology. AZNTP films with 23 nm in arm diameter have shown highly sensitive, quick response sensor material that works at room temperature.

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