What he came up with is a very simple yet very effective fill level sensor that can scan thousands of bottles an hour. There were a few design decisions that went into the construction of this ...

Researchers have developed a new optical sensor that provides a simple way to achieve real-time detection of extremely low levels of arsenic in water.

To fill this critical gap ... and user-friendly enough for routine arsenic monitoring in drinking water. To make the new sensor, the researchers coated the inside core of a fiber with gold ...