Potentiometric oxygen sensors with excellent sensitivity in a low concentration range are designed based on intrinsic logarithmic response characteristics, and an asymmetric electrode structure, differentiated from conventional reference gases or parts exposed to air, is implemented. Electrolytes materials that formulate sensor devices evaluated by comprehensively considering their reactivity t...

We developed a novel single cell measurement of photosynthesis activity using fluorescent oxygen sensor in a microchamber with gas barrier layer. We used Synechocystis sp. PCC 6803, which is a series of cyanobacteria. The chamber wall contains oxygen sensor and gas barrier layer to measure the dissolved oxygen concentration in the chamber. The oxygen concentration is changed by aerobic respirat...

Glucose concentration may be determined enzymatically by a glucose-oxidase procedure in which the amount of oxygen depletion from a solution saturated with oxygen is observed. The difference between the initial and final oxygen levels as detected by a polarographic oxygen analyzer is a measure of glucose concentration. Blood is sampled continuously by means of a double-lumen catheter inserted i...

the combination of graphene (gr) and nickel oxide nanoparticles (nio nps) yields nanostructured electrochemical sensor formed a novel kind of structurally uniform and electrocatalytic activity material. in cyclic voltammetry (cv) studies, in the presence of ep, nio/gr composite modified electrode shows a significantly higher current response for ep oxidation. based on differential pulse voltamm...

This paper presents a novel concept for a compact low-cost Earth sensor based on imaging atmospheric oxygen emission at 762 nm using arrays of single photon avalanche diodes (SPADs). In both nighttime and daytime there is continuous emission at 762 nm due to oxygen recombination. The SPADs high sensitivity enables the ES to operate at night and day, over a wide temperature range, with a very co...