Looking at a popular science website I came across a very interesting new invention from UCLA. It is an attachment for your cell phone that scans your food for different types of bacteria including e coli. Not only is this an important innovation for food safety but also incredible that it can be attached to your mobile phone. According to the article, “Engineers at UCLA combined quantum dots, a type of tiny semiconductor, with capillaries containing antibodies. When the capillaries contain an E. coli sample, they emit light.” The device is similar to a microscope except it uses light particles to show the bacteria.