scholarly journals A New Cross-Linkable Oxygen Sensor Covalently Bonded into Poly(2-hydroxyethyl methacrylate)-co-Polyacrylamide Thin Film for Dissolved Oxygen Sensing

2010 ◽  
Vol 22 (6) ◽  
pp. 2069-2078 ◽  
Author(s):  
Yanqing Tian ◽  
Bradley R. Shumway ◽  
Deirdre R. Meldrum
Keyword(s):  
Thin Film ◽  
Dissolved Oxygen ◽  
Oxygen Sensor ◽  
Oxygen Sensing ◽  
Hydroxyethyl Methacrylate ◽  
Covalently Bonded

Thin film dissolved oxygen sensor based on platinum octaethylporphyrin encapsulated in an elastic fluorinated polymer

2004 ◽  
Vol 502 (1) ◽  
pp. 1-6 ◽  
Author(s):  
R.N. Gillanders ◽  
M.C. Tedford ◽  
P.J. Crilly ◽  
R.T. Bailey
Keyword(s):  
Thin Film ◽  
Dissolved Oxygen ◽  
Oxygen Sensor ◽  
Fluorinated Polymer

scholarly journals A Phosphorescence Quenching-Based Intelligent Dissolved Oxygen Sensor on an Optofluidic Platform

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 281
Author(s):  
Fang Wang ◽  
Longfei Chen ◽  
Jiaomeng Zhu ◽  
Xuejia Hu ◽  
Yi Yang
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Sensor ◽  
Continuous Measurement ◽  
Limit Of Detection ◽  
Oxygen Sensing ◽  
High Sensitivity ◽  
Microfluidic Channels ◽  
Phosphorescence Quenching ◽  
Intelligent Sensor ◽  
Sensing Membrane

Continuous measurement of dissolved oxygen (DO) is essential for water quality monitoring and biomedical applications. Here, a phosphorescence quenching-based intelligent dissolved oxygen sensor on an optofluidic platform for continuous measurement of dissolved oxygen is presented. A high sensitivity dissolved oxygen-sensing membrane was prepared by coating the phosphorescence indicator of platinum(II) meso-tetrakis(pentafluorophenyl)porphyrin (PtTFPP) on the surface of the microfluidic channels composed of polydimethylsiloxane (PDMS) microstructure arrays. Then, oxygen could be determined by its quenching effect on the phosphorescence, according to Stern–Volmer model. The intelligent sensor abandons complicated optical or electrical design and uses a photomultiplier (PMT) counter in cooperation with a mobile phone application program to measure phosphorescence intensity, so as to realize continuous, intelligent and real-time dissolved oxygen analysis. Owing to the combination of the microfluidic-based highly sensitive oxygen sensing membrane with a reliable phosphorescent intensity detection module, the intelligent sensor achieves a low limit of detection (LOD) of 0.01 mg/L, a high sensitivity of 16.9 and a short response time (22 s). Different natural water samples were successfully analyzed using the intelligent sensor, and results demonstrated that the sensor features a high accuracy. The sensor combines the oxygen sensing mechanism with optofluidics and electronics, providing a miniaturized and intelligent detection platform for practical oxygen analysis in different application fields.

Novel optical oxygen sensing by phosphorescence quenching of palladium porphyrin self-assembled film on alumina plate

2000 ◽  
Vol 04 (02) ◽  
pp. 179-184 ◽  
Author(s):  
YUTAKA AMAO ◽  
KEISUKE ASAI ◽  
ICHIRO OKURA
Keyword(s):  
Oxygen Pressure ◽  
Oxygen Sensor ◽  
Response Times ◽  
Oxygen Sensing ◽  
Fast Response ◽  
Phosphorescence Quenching ◽  
Highly Sensitive ◽  
Optical Oxygen Sensor ◽  
Self Assembled ◽  
Quenching By Oxygen

An optical oxygen sensor based on the phosphorescence quenching of palladium tetrakis(4-carboxyphenyl)porphyrin (PdTCPP) self-assembled film (SAM) on alumina plate was developed. The phosphorescence intensity of PdTCPP film decreased with increasing oxygen pressure, indicating that the film can be used as an optical oxygen-sensing device based on phosphorescence quenching by oxygen. The ratio I0/I100 as a sensitivity measure of the sensing film is estimated to be 17.7, showing that the film is a highly sensitive device for oxygen pressure. The film obeyed Stern–Volmer plots with a multisite model and possessed good operational stability and a fast response. Response times are 36 s for deoxygenated to oxygenated conditions and 148 s for the reverse conditions.

scholarly journals A data mining approach to evaluate suitability of dissolved oxygen sensor observations for lake metabolism analysis

2018 ◽  
Vol 16 (11) ◽  
pp. 787-801 ◽  
Author(s):  
Kohji Muraoka ◽  
Paul Hanson ◽  
Eibe Frank ◽  
Meilan Jiang ◽  
Kenneth Chiu ◽  
...  
Keyword(s):  
Data Mining ◽  
Dissolved Oxygen ◽  
Oxygen Sensor ◽  
Lake Metabolism ◽  
Data Mining Approach ◽  
Metabolism Analysis

Oxygen sensing performance of Nb-doped TiO2 thin film with porous structure

2014 ◽  
Vol 585 ◽  
pp. 729-733 ◽  
Author(s):  
Linhui Gan ◽  
Congcong Wu ◽  
Yuan Tan ◽  
Bo Chi ◽  
Jian Pu ◽  
...  
Keyword(s):  
Thin Film ◽  
Porous Structure ◽  
Tio2 Thin Film ◽  
Oxygen Sensing ◽  
Doped Tio2 ◽  
Sensing Performance
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