When Arnold Beckman, a professor of analytical chemistry at the California Institute of Technology, was asked to devise a way to measure acidity in citrus fruit, the resulting “acidometer” ...

Fluorescent probes for pH sensing in living cells have emerged as indispensable tools in both fundamental biological research and clinical diagnostics. These probes employ a diverse array of ...

The illustration is a summary map of the organellar pH measured with a single pH-sensitive probe, SITE-pHorin, which possesses an ultra-pH sensitivity enhanced by the quantum entanglement effect. As ...