To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S3G. AIMD simulation of isomer 5M with the time step set as 0.1 fs. Resolving the HONO formation mechanism in the ionosphere via ab initio molecular dynamic simulations Rongxing He, Lei Li, Jie Zhong, Chongqin Zhu, Joseph S. Francisco, and Xiao Cheng Zeng PNAS. 2016. 113:4629-4633 DOI: 10.1073/pnas.1601651113 Download Original Video Browse All Videos »