Interstitialcy Theory of Liquids and Glasses A.V. Granato, University of Illinois, NSF DMR 0138488

1. Interstitialcy Theory of Liquids and Glasses A.V. Granato, University of Illinois, NSF DMR 0138488 The Search for the Kauzman Pseudo-Critical Temperature, Tk • Some time ago Taub and associates discovered a simple linear relationship between the metallic glass viscosity, h, and time (see Fig.) • h =h0 +h1(T)t where h1 decreases with T • The Interstitialcy Theory of Condensed Matter (ITCM) not only explains this characteristic, universal behavior, but also predicts a discontinuity in h1(T) at Tk. Although the effects are small the consequences are not. • If Tk exists there is • No equilibrium liquid state < Tk • No Kauzman paradox • No “Ideal Glass” • We will establish the existence of Tk using shear modulus data – inherently more accurate than those from viscosity measurements. Phys Rev Lett, 93, 155502-1, (2004) (After Taub et al – 1981)

2. Interstitialcy Theory of Liquids and Glasses A.V. Granato, University of Illinois, NSF DMR 0138488 Societal Impact: Education: • One Visiting Scientist • D.M. Joncich , PhD (part time) • Two Visiting Physics Professors • V.A. Khonik, PhD DS (part time) • B. Igarashi, PhD (part time) • Two REU students • A. Karmis (low-T thermal conductivity) • A. Pompe (high-T shear modulus) • Two Undergraduate researchers • A. Niemerg (defect visualization) • T. Lim (computer support) • Metallic glasses hold great potential for the future. These amorphous materials are hard, corrosion-resistant, ductile, and twice as strong as conventional alloys. In addition, they can be produced in molds – a process which dramatically reduces material waste and adverse environmental impact during fabrication. • Current applications include low-loss transformers, fiber optics, high-performance specialty coatings, solar cells, and materials for radioactive waste storage. • The Interstitialcy Theory of Condensed Matter provides the only fundamental microscopic model for the properties of these glasses.