To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S3. Video for a freely behaving mouse with upconversion devices implanted subdermally on the head under the IR illumination. Microscale optoelectronic infrared-to-visible upconversion devices and their use as injectable light sources He Ding, Lihui Lu, Zhao Shi, Dan Wang, Lizhu Li, Xichen Li, Yuqi Ren, Changbo Liu, Dali Cheng, Hoyeon Kim, Noel C. Giebink, Xiaohui Wang, Lan Yin, Lingyun Zhao, Minmin Luo, and Xing Sheng PNAS. 2018. 115:6632-6637 DOI: 10.1073/pnas.1802064115 Download Original Video Browse All Videos »