Qi Unit Perovskite Qiユニットーペロブスカイト Date: 24 February 2015 Creator: jeffery-prine Copyright OIST (Okinawa Institute of Science and Technology Graduate University, 沖縄科学技術大学院大学). Creative Commons Attribution 4.0 International License (CC BY 4.0). Photo Collection Researchers View Album on Flickr Share on: