This study aims to develop low-cost and environmentally friendly material galvanic-based dissolved oxygen sensors. A Dissolved (DO) sensor has been designed fabricated on an 85 x 205 mm galvanic-based. The structure device consists of Al-Zn reference layer electrode, Ag/AgCl active 120ml KCl electrolyte solvent 0,1 M, closed by TiO2 membrane (PTFE). formation electrode was done Ag chlorination ...

Oxygen tension in mammalian cell culture can profoundly affect cellular differentiation, viability, and proliferation. However, precise measurement of dissolved oxygen in real time remains difficult. We report a new noninvasive sensor that can accurately measure oxygen concentration during cell culture while being compatible with live-cell imaging techniques such as fluorescence and phase contr...

Pulse oximeters are widely used for noninvasive monitoring of oxygen saturation in arterial blood hemoglobin. We present a transmittance pulse oximetry system based on near-infrared (NIR) laser diodes (750 and 850 nm) for monitoring oxygen saturation of arterial blood hemoglobin. The pulse oximetry system is made up of the optical sensor, sensor electronics, and processing block. Also, we show ...

Resistive oxygen sensors are an inexpensive alternative to the classical potentiometric zirconia oxygen sensor, especially for use in harsh environments and at temperatures of several hundred °C or even higher. This device-oriented paper gives a historical overview on the development of these sensor materials. It focuses especially on approaches to obtain a temperature independent behavior. It ...