Random numbers are very important to us in this computer age, being used for all sorts of security and cryptographic tasks. [Theory to Thing] recently built a device to generate random numbers ...

Chemists in South Korea have created a stable color-changing sensor that displays an easily quantifiable response to the pH of its surroundings. Published in Microsystems & Nanoengineering, Dong-Hwan ...

Abstract: This article presents the development and validation of a reflective photoplethysmography (PPG) sensor designed for unobtrusive heart rate monitoring through clothing in automotive ...

Abstract: Continuous hemoglobin (Hb) monitoring can diagnose conditions such as polycythemia, anemia, and various cardiovascular diseases. Current Hb measurement techniques are still invasive, often ...