Materials scientist Yoel Fink with functional fibres. Fink is the head of Advanced Functional Fabrics of America (AFFOA), which he founded in 2016 to build on his optical fibre research at the Massachusetts Institute of Technology (MIT). AFFOA is a research consortium that is researching and developing functional fibres that can be integrated into clothing, with a wide range of applications to wearable computing devices and smart clothing. Photographed on 22 December 2017, in Cambridge, Massachusetts, USA.