“Giant” self-assembled mesostructured silica sphere characterised using a doped fluorophore and an AMOLED mobile screen as the excitation source

Using the emission for the blue OLED component of a HTC Android Phone, a Rhodamine 123 doped silica mesostructured shell, fabricated by evaporative self-assembly on a super hydrophobic surface, is excited with blue light and the fluorescence image taken. The results demonstrate the potential of smart mobile platforms as optical hardware for portable and intelligent diagnostics as well as illustrating the fabrication of large mesostructured spheres.