Rob Coppinger finds that future home and office lighting could deliver gigabits of data every second

While portable spectroscopy systems are getting smaller each year, Tim Gillett finds that simplicity and modularity are more crucial than scale

Faster lasers require ever more sophisticated mirrors. Rob Coppinger reflects

Greg Blackman describes various uses of photodynamic therapy, from treating drug-resistant bacteria and blanching port-wine stain birthmarks, to enhancing drug delivery inside the body

Cobolt has developed from a start-up to an established company with mature products, as Warren Clark discovers