Q:The Journal of Nanoparticle Research is a peer-reviewed scientific journal published by Springer Science+Business Media. It focuses mainly on physical chemical and biological phenomena and processes in structures of sizes comparable to a few nanometers. At these scales materials often exhibit improved and novel properties that are a direct result of their small size.The editor-in-chief is Mihail C. Roco. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Written Work