A robotic hand with a tiny sensor on one of its fingers can detect potentially harmful mercury ions in samples of food and water by prodding them
![](https://jimmyspost.com/wp-content/uploads/2023/03/Robotic-hand-pokes-food-and-water-to-tell-if-they.jpg)
A robotic hand with a tiny sensor on one of its fingers can detect potentially harmful mercury ions in samples of food and water by prodding them