The invisible order sets the fluctuation in the terahertz region of glass

The invisible order sets the fluctuation in the terahertz region of glass

Although glasses exhibit disordered atomic structures, X-ray and neutron scattering reveal a subtle periodicity. Researchers have demonstrated that this hidden periodicity -- referred to as 'invisible order' -- plays a critical role in determining vibrational fluctuations in the terahertz (THz) frequency range, which significantly influence the physical properties of glass.