Invited Speaker: Peter Harrowell

Report Title: Atomic Restraint: A General Structural Order Parameter for the Amorphous Solidification

Time: 10:00 a.m., November 5, 2026

Location: First Meeting Room, Zhongying Building, Xingqing Campus

Introduction:Peter Harrowell是澳大利亚悉尼大学化学学院理论化学教授。Harrowell教授于1980年毕业于悉尼大学，获理学学士（荣誉）学位，随后于1986年在芝加哥大学在David Oxtoby指导下完成博士学位，研究凝固的密度泛函理论。1986年至1988年，Harrowell教授在科罗拉多州立大学作为博士后研究员，之后赴悉尼大学任职。他的研究贡献涉及应用理论和计算方法来理解与结晶、液晶相变、剪切诱导熔化、玻璃化转变、润滑以及非晶材料材料性质相关的现象，在包括Nature, Nature Materials, Nature Physics, PRL, PNAS等期刊发表论文160余篇，在国际大会做受邀报告40余次，并曾担任Journal of Chemical Physics编委。

Abstract:The persistent problem posed by the glass transition is to develop a general atomic level description of an amorphous solidification. The answer proposed in this talk is to measure a configuration’s capacity to restrain the motion of the constituent atoms. Here we show that the instantaneous normal modes can be used to define a measure of atomic restraint that accounts for the difference between fragile and strong liquids and the collective length scale of the supercooled liquid. These results represent a significant simplification of the description of amorphous solidification and provide a powerful systematic treatment of the influence of microscopic factors on the formation of an amorphous solid.

关键词：amorphous solidification，structural order，atomic constraint

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