Dr Lee developed a simple and cheap way of making a high-powered lens that can transform a smart phone into a high-resolution microscope. The concept behind the ‘DIY Droplet Lens’ is very simple. The lenses are formed using droplets of the polymer used to make soft contact lenses, then baked upside down in an oven, using gravity to pull them into shape. The resulting baked droplet lens (the size of a lentil) is then placed over the camera lens of a smartphone, along with a light source, enabling 160x magnification. The tiny microscope has a wide range of potential uses, particularly if coupled with the right smartphone apps. Dr Lee’s DTF project has funded the prototyping and manufacturing stage of development.