Luminescent Tb(iii) and Sm(iii) complexes with a 1,4,7-triazacyclononane-based tris-aryloxide ligand for high-performance oxygen sensors

2017 ◽  
Vol 46 (28) ◽  
pp. 9126-9130 ◽  
Author(s):  
Hidetaka Nakai ◽  
Masafumi Kuyama ◽  
Juncheol Seo ◽  
Takahiro Goto ◽  
Takahiro Matsumoto ◽  
...  
Keyword(s):  
High Performance ◽  
Oxygen Sensor ◽  
Oxygen Sensors

This paper presents (i) a high-performance Tb(iii)-based oxygen sensor (1Tb/PS) and (ii) a lanthanide(iii)-based colorimetric luminescent oxygen sensor (1TbSm/PS).

A highly sensitive and fast-responding oxygen sensor based on POSS-containing hybrid copolymer films

2017 ◽  
Vol 5 (44) ◽  
pp. 11395-11402 ◽  
Author(s):  
Yongyun Mao ◽  
Qian Zhao ◽  
Jianchang Wu ◽  
Tingting Pan ◽  
Bingpu Zhou ◽  
...  
Keyword(s):  
High Performance ◽  
Oxygen Sensor ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Oxygen Sensors ◽  
Inorganic Hybrid ◽  
Copolymer Films ◽  
Hybrid Copolymer ◽  
Highly Sensitive ◽  
Platinum Porphyrin ◽  
Oligomeric Silsesquioxane

Organic–inorganic hybrid 3-(trimethoxysily)propylmethacrylate-co-platinum porphyrin-co-methacrylolsobutyl-polyhedral oligomeric silsesquioxane (TPMA-PtTPP-POSS) copolymer films were synthesized and applied as high-performance oxygen sensors.

High-performance dissolved oxygen sensors based on platinum(ii) porphyrin embedded in polystyrene beads

2017 ◽  
Vol 41 (14) ◽  
pp. 6646-6652 ◽  
Author(s):  
Ke Zhang ◽  
Lingling Luo ◽  
Wenjie Li ◽  
Honglin Zhang ◽  
Yi Zhang ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
High Performance ◽  
Oxygen Sensor ◽  
High Sensitivity ◽  
Oxygen Sensors ◽  
Polystyrene Beads ◽  
Photo Stability

A ratiometric dissolved oxygen sensor synthesized via a swelling method exhibits high sensitivity, good reversibility and photo-stability.

scholarly journals The impact of particulate electron paramagnetic resonance oxygen sensors on fluorodeoxyglucose imaging characteristics detected via positron emission tomography

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Philip E. Schaner ◽  
Ly-Binh-An Tran ◽  
Bassem I. Zaki ◽  
Harold M. Swartz ◽  
Eugene Demidenko ◽  
...  
Keyword(s):  
Fdg Pet ◽  
Oxygen Sensor ◽  
Oxygen Sensors ◽  
Paramagnetic Resonance ◽  
Imaging Characteristics ◽  
Positron Emission ◽  
Pet Ct ◽  
Fdg Pet Ct ◽  
The Impact ◽  
Electron Paramagnetic

AbstractDuring a first-in-humans clinical trial investigating electron paramagnetic resonance tumor oximetry, a patient injected with the particulate oxygen sensor Printex ink was found to have unexpected fluorodeoxyglucose (FDG) uptake in a dermal nodule via positron emission tomography (PET). This nodule co-localized with the Printex ink injection; biopsy of the area, due to concern for malignancy, revealed findings consistent with ink and an associated inflammatory reaction. Investigations were subsequently performed to assess the impact of oxygen sensors on FDG-PET/CT imaging. A retrospective analysis of three clinical tumor oximetry trials involving two oxygen sensors (charcoal particulates and LiNc-BuO microcrystals) in 22 patients was performed to evaluate FDG imaging characteristics. The impact of clinically used oxygen sensors (carbon black, charcoal particulates, LiNc-BuO microcrystals) on FDG-PET/CT imaging after implantation in rat muscle (n = 12) was investigated. The retrospective review revealed no other patients with FDG avidity associated with particulate sensors. The preclinical investigation found no injected oxygen sensor whose mean standard uptake values differed significantly from sham injections. The risk of a false-positive FDG-PET/CT scan due to oxygen sensors appears low. However, in the right clinical context the potential exists that an associated inflammatory reaction may confound interpretation.

Fabrication of high performance oxygen sensors using multilayer oxides with high interfacial conductivity

2016 ◽  
Vol 4 (29) ◽  
pp. 11422-11429 ◽  
Author(s):  
Lei Yao ◽  
Gang Ou ◽  
Wei Liu ◽  
Xiaohui Zhao ◽  
Hiroki Nishijima ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
High Performance ◽  
Operating Temperature ◽  
Oxygen Sensors

Fabrication of oxygen sensors using Ce0.8Sm0.1Nd0.1O2−δ/Al2O3multilayered electrolytes with high interfacial ionic conductivity which endows the sensors with low operating temperature and excellent performances.

Limiting current type of oxygen sensor with high performance

1990 ◽  
Vol 1 (1-6) ◽  
pp. 312-318 ◽  
Author(s):  
Akiyoshi Asada ◽  
Hideo Yamamoto ◽  
Mitsuhiro Nakazawa ◽  
Hiroshi Osanai
Keyword(s):  
High Performance ◽  
Oxygen Sensor ◽  
Limiting Current

Oxygen Sensor Testing for Automotive Applications

2020 ◽  
Vol 896 ◽  
pp. 249-254
Author(s):  
Dragos Tutunea ◽  
Ilie Dumitru ◽  
Oana Victoria Oţăt ◽  
Laurentiu Racila ◽  
Ionuţ Daniel Geonea ◽  
...  
Keyword(s):  
Internal Combustion Engines ◽  
Oxygen Sensor ◽  
Oxygen Sensors ◽  
Pollutant Emissions ◽  
Combustion Engines ◽  
Automotive Applications ◽  
Combustion Gases ◽  
Experimental Stand ◽  
Residual Oxygen ◽  
Sensor Degradation

During the operation of internal combustion engines the air-fuel ratio (A/F) is an important parameter which affects fuel consumption and pollutant emissions. The automotive oxygen sensor (Lambda) measures the quantity of residual oxygen in the combustion gases. Sensor degradation in time due to the exposure to high temperatures causes a distortion in controlling the A/F with the increase in gas emissions. In this paper an experimental stand is designed to test oxygen sensor degradation in laboratory condition. Four oxygen sensors were tested function of temperature and time recording their variation in resistance and voltage. The results showed similar values in the curves for all sensors tested.

scholarly journals Robust optical oxygen sensors based on polymer-bound NIR-emitting platinum(ii)–benzoporphyrins

2014 ◽  
Vol 2 (36) ◽  
pp. 7589-7598 ◽  
Author(s):  
L. H. Hutter ◽  
B. J. Müller ◽  
K. Koren ◽  
S. M. Borisov ◽  
I. Klimant
Keyword(s):  
High Performance ◽  
Oxygen Sensing ◽  
Oxygen Sensors ◽  
Covalently Bound

New high performance optical oxygen sensing materials based on NIR-emitting indicators covalently bound to various polymers overcome main limitations of the conventional sensors.

Synthesis of Perovskite Sr Doped Lanthanide Cobaltites and Ferrites and Application for Oxygen Sensors: A Comparative Study

2014 ◽  
Vol 605 ◽  
pp. 483-486 ◽  
Author(s):  
Katarina Cvejin ◽  
Libu Manjakkal ◽  
Jan Kulawik ◽  
Krzysztof Zaraska ◽  
Dorota Szwagierczak
Keyword(s):  
Oxygen Sensor ◽  
Elevated Temperatures ◽  
Solid State Reaction Method ◽  
Oxygen Sensors ◽  
Yttria Stabilized Zirconia ◽  
Electrochemical Cells ◽  
Stabilized Zirconia ◽  
Sensor Application ◽  
Oxygen Gas ◽  
Synthesized Materials

Perovskites with formula A1-xSrxBO3-δ (A = La, Nd, Sm; B = Fe or Co) have been synthesized by solid state reaction method and have been studied as materials for oxygen sensor application. The obtained powders were used for making thick film pastes that were later screen printed as sensing electrodes on yttria stabilized zirconia (YSZ) substrates. Sensing electrodes were exposed to low concentration oxygen gas at elevated temperatures. Measurements of the electromotive force of electrochemical cells with the fabricated electrodes were carried out as a function of temperature. The investigation indicated that all of the synthesized materials show Nernstian behavior in a relatively wide temperature range, although the most promising for oxygen electrochemical sensor application is strontium doped samarium cobaltite.

scholarly journals Non-obvious Problems in Clark Electrode Application at Elevated Temperature and Ways of Their Elimination

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
M. V. Miniaev ◽  
M. B. Belyakova ◽  
N. V. Kostiuk ◽  
D. V. Leshchenko ◽  
T. A. Fedotova
Keyword(s):  
Gas Phase ◽  
Oxygen Sensor ◽  
Gas Bubbles ◽  
Oxygen Sensors ◽  
Measuring System ◽  
Dissolved Gases ◽  
Spontaneous Release ◽  
Complete Exclusion ◽  
Typical Temperature ◽  
Clark Electrode

Well-known cause of frequent failures of closed oxygen sensors is the appearance of gas bubbles in the electrolyte. The problem is traditionally associated with insufficient sealing of the sensor that is not always true. Study of a typical temperature regime of measurement system based on Clark sensor showed that spontaneous release of the gas phase is a natural effect caused by periodic warming of the sensor to a temperature of the test liquid. The warming of the sensor together with the incubation medium causes oversaturation of electrolyte by dissolved gases and the allocation of gas bubbles. The lower rate of sensor heating in comparison with the medium reduces but does not eliminate the manifestation of this effect. It is experimentally established, that with each cycle of heating of measuring system up to 37°C followed by cooling the volume of gas phase in the electrolyte (KCl; 60 g/L; 400 μL) increased by 0.6 μL approximately. Thus, during just several cycles it can dramatically degrade the characteristics of the sensor. A method was developed in which the oxygen sensor is heated in contact with the liquid, (depleted of dissolved gases), allowing complete exclusion of the above-mentioned effect.

Oxygen sensor utilizing ultraviolet irradiation assisted ZnO nanorods under low operation temperature

RSC Advances ◽  
2014 ◽  
Vol 4 (95) ◽  
pp. 52903-52910 ◽  
Author(s):  
Chen-Shiun Chou ◽  
Yung-Chen Wu ◽  
Che-Hsin Lin
Keyword(s):  
Uv Irradiation ◽  
Ultraviolet Irradiation ◽  
High Performance ◽  
Oxygen Sensor ◽  
Oxygen Sensing ◽  
Zno Nanorods ◽  
Zno Film ◽  
Working Temperature ◽  
Operation Temperature

This paper presents a novel ultraviolet (UV) irradiation assisted nanostructured ZnO film for high performance oxygen sensing under a low working temperature.

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