Efficient light collection for a low-cost respiratory oxygen sensor

2001 ◽  
Author(s):  
Kevin B. Aptowicz ◽  
R. Brian Hooker
Keyword(s):  
Oxygen Sensor ◽  
Low Cost ◽  
Light Collection

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.

A Simple and Low Cost Approach for Texturing on CZ-Silicon Solar Cell

2010 ◽  
Vol 650 ◽  
pp. 168-171
Author(s):  
Xian Fang Gou ◽  
Xu Dong Li ◽  
Ying Xu ◽  
Shuang Song ◽  
Yin Fang Cui ◽  
...  
Keyword(s):  
Solar Cell ◽  
Silicon Surface ◽  
Silicon Solar Cell ◽  
Isopropyl Alcohol ◽  
Low Cost ◽  
Light Collection ◽  
Buffer Solution ◽  
High Consumption ◽  
New Process ◽  
The Cost

Silicon solar cell surface texture was effective to reduce reflectance and improve light collection. Alkaline etchants was a conventional process in monocrystalline silicon texturing.However, isopropyl alcohol(IPA) as buffer solution was expensive and high consumption, which increased the cost of solar cell. In the paper, It has been found that a cheaper surfactant as buffer solution decrease silicon surface interfacial force and increase etchant infiltrating of silicon wafer, so a large number of very small and uniform texture appeared on the silicon surface. pyramids size of about 3µm formed after etching of 15min. A new process to reduce the production cost and form the high quality pyramids texturization has been developed by this investigation.

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 3D printing of composite reflectors for enhanced light collection in scintillation detectors

2021 ◽  
Author(s):  
Petr Sokolov ◽  
Dmitrii Komissarenko ◽  
Georgy Dosovitskiy ◽  
Mikhail Korzhik
Keyword(s):  
3D Printing ◽  
Low Cost ◽  
Formation Rate ◽  
Light Collection ◽  
Staircase Effect ◽  
Materials Used ◽  
Scintillator Detectors ◽  
Reflecting Surfaces ◽  
First Time ◽  
3D Printing Technique

<div>The present study deals with the fabrication of light-reflecting materials used in pixelated scintillator detectors. For the first time, the reflecting surfaces for pixels of different sizes (from 0.8 to 3.2 mm) were obtained via a low-cost DLP 3D printing technique. The material for the reflectors was the new composite of transparent ultraviolet light-cured resin and TiO<sub>2</sub> as a light-scattering filler. It was observed that TiO<sub>2</sub> showed better performance compare to other pigments such as BaSO<sub>4</sub>, hBN or cubic zirconia. The object formation rate was about 1 cm per hour with the possibility to produce several parts simultaneously that simplifies the wrapping procedure. It was found that the regular grooves pattern of the fabricated parts (staircase effect) could increase a light collection from a scintillator. The reflective properties of such surfaces were comparable to conventional reflection coating (e.g., Teflon wrapping).<br></div>Presented at the 2019 IEEE NSS & MIC conference, Manchester, UK. 14 pages, 12 figures, 1 table. Journal reference: Optical Materials V. 108, October 2020, p. 110393.

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.

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