A team in Hong Kong has developed a new method for detecting the lethal bird flu virus quickly, using a class of materials called upconversion nanoparticles.
![Upconversion nanoparticles as biosensors](https://www.advancedsciencenews.com/wp-content/uploads/2014/08/Small2.jpg)
A team in Hong Kong has developed a new method for detecting the lethal bird flu virus quickly, using a class of materials called upconversion nanoparticles.