We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are ...

Fingertip monitors known as pulse oximeters that can be used at home to detect low blood oxygen levels (hypoxaemia) give ...

Sauvage Laboratory for Smart Materials, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China Research Centre of Printed Flexible Electronics, School of Materials Science and Engineering, ...