Parvej Alam; Nelson L. C. Leung; Yanhua Cheng; Haoke Zhang; Junkai Liu; Wenjie Wu; Ryan T. K. Kwok; Jacky W. Y. Lam; Herman H. Y. Sung; Ian D. Williams; Benzhong Tang; Spontaneous and Fast Molecular Motion at Room Temperature in the Solid State, Ange