On July 26 to 29, 2015, The 5th International Conference on Optofluidics was held in Taipei, Taiwan. The topics of submission covered a wide range of issues on chemistry, including micro-/nanofluidics, MEMS/NEMS, optical devices, plasmonics,biochemical sensors & assays, fabrication, energy & environment, optofluidic & 3D displays, droplets & emulsions and so on. The conference was aim to enhance the international communication and cooperation among research all over the world. Prof. Feng Xu was invited as session chair and hosted seminar on "3D biomaterials".