About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Theory and Design of Metallic Glasses
|
| Presentation Title |
What is the Density Wave in Liquid and Why it is Important to Metallic Glasses |
| Author(s) |
Takeshi Egami |
| On-Site Speaker (Planned) |
Takeshi Egami |
| Abstract Scope |
In crystals a unit cell joins nicely with the next due to lattice periodicity. But in liquid and glass the local structure started from one atom does not necessarily join well with the one started from another atom. This illustrates the difficulty of the bottom-up approach of starting with a central atom and growing the structure to elucidate the glass structure. I am convinced that there is a top-down global force to produce local density waves (DW) in liquid, which results in formation of the medium-range order. The local DW provides rigidity in liquid as well as in glass, whereas the immediate neighborhood of an atom is loose and fluid, even at low temperatures. This idea is new and is not intuitively obvious. I will try to illustrate this concept from various points of view, including the concept of local close-packing and frustration management. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Characterization, |