Measurement of Oxygen Concentration Distribution inside a Mixing Channel using Oxygen Sensitive Luminophore

Simultaneous measurement of dissolved oxygen concentration and velocity field in microfluidics using oxygen-sensitive particles

This paper reports a technique for measuring the velocity and dissolved oxygen concentration (DOC) fields simultaneously in a micro-scale water flow using oxygensensitive particles (OSP) and a conventional microparticle image velocimetry method. The OSP were fabricated using a dispersion polymerization method by synthesizing platinum (II) octaethyporphyrin (PtOEP) with polystyrene, and used as ...

In vivo measurement of oxygen concentration using sonochemically synthesized microspheres.

Proteinaceous microspheres filled with nitroxides dissolved in an organic liquid have been synthesized for the first time using high intensity ultrasound; these were used to measure oxygen concentrations in living biological systems. The microspheres have an average size of 2.5 microns, and the proteinaceous shell is permeable to oxygen. Encapsulation of the nitroxides into the microsphere grea...

Measurement of oxygen concentration using laser diode spectroscopy

Laser Spectroscopy provides a non-intrusive method for measuring the concentration of a species in a sample. This paper is a part of the development of employing laser spectroscopy techniques outside of a lab setting. Monitoring the presence of gaseous oxygen within a fuel tank is of great importance due to the volatility of the fuel/oxygen mixture and the threat it creates to the area surround...

Optical measurement of oxygen concentration in water

Performance Improvement of PEM Fuel Cells Using Air Channel Indentation; Part I: Mechanisms to Enrich Oxygen Concentration in Catalyst Layer

A three dimensional, compressible, steady, one phase flow of reactant-product mixture in the air side electrode of proton exchange membrane fuel cell (PEMFC) is numerically studied in this paper. The mixture is composed of three species: oxygen, nitrogen and water vapor. The performance of the cell is enhanced by partial blockage of the flow field channels. Various types of these blocks also ca...