Analytical Currents: Low-cost oxygen sensor

1998 ◽  
Vol 70 (15) ◽  
pp. 503A-503A
Keyword(s):  
Oxygen Sensor ◽  
Low Cost

The Research about La0.8Sr0.2CoO3 Application as Dense Diffusion Barrier in Limiting Current Oxygen Sensors

2013 ◽  
Vol 703 ◽  
pp. 111-114
Author(s):  
Yin Lin Wu ◽  
Hai Yan Zhao ◽  
Fu Shen Li
Keyword(s):  
Diffusion Barrier ◽  
Solid Electrolytes ◽  
Oxygen Sensor ◽  
Low Cost ◽  
Limiting Current ◽  
Stabilized Zirconia ◽  
Long Term Stability ◽  
Oxygen Ion ◽  
Ion Conducting

The fabrication and operation of a new thick film type of limiting current oxygen sensor is demonstrated that utilizes yttria (8% mol) stabilized zirconia (YSZ) as oxygen ion conducting solid electrolytes and dense La0.8Sr0.2CoO3(LSC) as diffusion barrier. The oxygen sensor shows a near linear response between 0 to 10.5% O2in argon at 1023K. The advantages of the sensor are simple construction, low cost and potential long term stability.

Development of a Low-Cost Hemin-Based Dissolved Oxygen Sensor With Anti-Biofouling Coating for Water Monitoring

2014 ◽  
Vol 14 (10) ◽  
pp. 3400-3407 ◽  
Author(s):  
Leo Hsu ◽  
Ponnambalam Ravi Selvaganapathy ◽  
John Brash ◽  
Qiyin Fang ◽  
Chang-Qing Xu ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Sensor ◽  
Low Cost ◽  
Water Monitoring

Limiting Current Oxygen Sensors with LSM as Dense Diffusion Barrier

2008 ◽  
Vol 368-372 ◽  
pp. 263-264
Author(s):  
Yin Lin Wu ◽  
Ling Wang ◽  
Fu Shen Li ◽  
Yan Qin Zhao
Keyword(s):  
Diffusion Barrier ◽  
Solid Electrolytes ◽  
Oxygen Sensor ◽  
Low Cost ◽  
Limiting Current ◽  
Excellent Performance ◽  
Long Term Stability ◽  
Oxygen Ion ◽  
Ion Conducting

A thick film type of limiting current oxygen sensor which uses yttria (8% mol) stabilized zirconia (YSZ) as oxygen ion conducting solid electrolytes and dense La0.8Sr0.2MnO3 (LSM) as diffusion barrier was developed successfully. The oxygen sensor showed excellent performance at oxygen concentrations ranging from 0 to 10 ppm. The advantages of the sensor are simple construction, low cost and potential long term stability.

An Accurate, Low-Cost, Easily-Manufacturable Oxygen Sensor

1990 ◽  
Author(s):  
Henry K. Hui ◽  
Skip Divers ◽  
Terry Lumsden ◽  
Tom Wallner ◽  
Steve Weir
Keyword(s):  
Oxygen Sensor ◽  
Low Cost

scholarly journals Development of Microalgae Biosensor Chip by Incorporating Microarray Oxygen Sensor for Pesticides Sensing

Biosensors ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 133
Author(s):  
Md. Abul Kashem ◽  
Kazuki Kimoto ◽  
Yasunori Iribe ◽  
Masayasu Suzuki
Keyword(s):  
Oxygen Sensor ◽  
Photosynthetic Activity ◽  
Ruthenium Complex ◽  
Low Cost ◽  
Water Quality Monitoring ◽  
Generation Rate ◽  
Pseudokirchneriella Subcapitata ◽  
Pdms Stamp ◽  
Oxygen Generation ◽  
Biosensor Chip

A microalgae (Pseudokirchneriella subcapitata) biosensor chip for pesticide sensing has been developed by attaching the immobilized microalgae biofilm pon the microarray dye spots (size 100 μm and pitch 200 μm). The dye spots (ruthenium complex) were printed upon SO3-modified glass slides using a polydimethylsiloxane (PDMS) stamp and a microcontact printer (μCP). Emitted fluorescence intensity (FI) variance due to photosynthetic activity (O2 production) of microalgae was monitored by an inverted fluorescent microscope and inhibition of the oxygen generation rate was calculated based on the FI responses both before and after injection of pesticide sample. The calibration curves, as the inhibition of oxygen generation rate (%) due to photosynthetic activity inhibition by the pesticides, depicted that among the 6 tested pesticides, the biosensor showed good sensitivity for 4 pesticides (diuron, simetryn, simazine, and atrazine) but was insensitive for mefenacet and pendimethalin. The detection limits were 1 ppb for diuron and 10 ppb for simetryn, simazine, and atrazine. The simple and low-cost nature of sensing of the developed biosensor sensor chip has apparently created opportunities for regular water quality monitoring, where pesticides are an important concern.

Functionalized Photonic Crystal Sensor Elements based on Nanoporous Polymers

2007 ◽  
Vol 1056 ◽  
Author(s):  
Sung Jin Kim ◽  
Elizabeth Nio ◽  
Vamsy P Chodavarapu ◽  
Albert H Titus ◽  
Mark T Swihart ◽  
...  
Keyword(s):  
Optical Sensor ◽  
Oxygen Sensor ◽  
Photonic Bandgap ◽  
Low Cost ◽  
Complementary Metal Oxide Semiconductor ◽  
Porous Polymer ◽  
Oxide Semiconductor ◽  
Semiconductor Detectors ◽  
Biological Recognition ◽  
Reflection Grating

ABSTRACTWe report the development of oxygen sensors using polymer photonic bandgap structure and CMOS chips. These integrated sensors provide a new platform for the development of low cost, low (battery) powered, light weight, robust, fast and small sensors. We demonstrate an approach to encapsulation of chemical and biological recognition elements within the porous structures. This sensing platform is built on our recently demonstrated nanofabrication technique using holographic interferometry of a photo-activated mixture that includes a volatile solvent as well as monomers, photoinitiators, and co-initiators. Resulting structure is nanoporous polymer 1D photonic bandgap structures that has reflection grating property and can be directly integrated into optical sensor systems that we have previously developed. For optical sensor system, CMOS (Complementary Metal Oxide Semiconductor) detectors that include phototransistors, trans impedance amplifier, and other signal processing units are used. Combining CMOS chip and nano-porous polymer reflection grating, we demonstrate an oxygen sensor as a prototype by encapsulating the fluorophore (tris(4,7-diphenyl-1,10-phenathroline)ruthenium(II) using fluorescence intensity.

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