(color online) Typical dynamical characters in glassy materials. (a) Non-Arrhenius temperature dependence of viscosity in various glassy materials. ^[1] Reprinted by permission from Macmillan Publishers Ltd: Nature. Copyright (2001). (b) The split of α and β relaxation in Zr-based metallic glass. ^[16] Reprinted from Ref. [16]. Copyright (2015), with permission from Elsevier. (c) Schematic illustration of dielectric loss as a function of the frequency in glassy materials. There are distinct dynamic relaxation modes from the left to the right (from low frequency domain to high frequency domain): primary ( relaxation, slow β relaxation, fast process and boson peak; ^[13] (Courtesy of P. Lunkenheimer, University of Augsburg, Germany). (d) Non-exponential relaxation dynamics of Zr-based metallic glass. ^[17] Reprinted from Ref. [17], with the permission of AIP publishing.