Professor Hawking used an input device controlled by his cheek movements to choose the words he wanted to use. A special output device turned those words into electronic speech that people could hear.

How to make creative collages on Android phones and tablets Your default photo management app has an in-built collage maker. Google Photos has one, and so does Samsung Gallery.

How to cite this article: Choi, W. et al. Control of randomly scattered surface plasmon polaritons for multiple-input and multiple-output plasmonic switching devices.