Accessing ultrastable glass via a bulk transformation

Hengtong Bu, Hengwei Luan, Jingyi Kang, Jili Jia, Wenhui Guo, Yunshuai Su, Huaping Ding, Hsiang-Shun Chang, Ranbin Wang, You Wu, Lingxiang Shi, Pan Gong, Qiaoshi Zeng, Yang Shao () and Kefu Yao ()
Additional contact information
Hengtong Bu: Tsinghua University
Hengwei Luan: Tsinghua University
Jingyi Kang: Tsinghua University
Jili Jia: Tsinghua University
Wenhui Guo: Tsinghua University
Yunshuai Su: Tsinghua University
Huaping Ding: Huazhong University of Science and Technology
Hsiang-Shun Chang: Tsinghua University
Ranbin Wang: Tsinghua University
You Wu: Tsinghua University
Lingxiang Shi: Tsinghua University
Pan Gong: Huazhong University of Science and Technology
Qiaoshi Zeng: Center for High Pressure Science and Technology Advanced Research
Yang Shao: Tsinghua University
Kefu Yao: Tsinghua University

Nature Communications, 2025, vol. 16, issue 1, 1-10

Abstract: Abstract As a medium to understand the nature of glass transition, ultrastable glasses have garnered increasing attention for their significance in fundamental science and technological applications. Most studies have produced ultrastable glasses through a surface-controlled process using physical vapor deposition. Here, we demonstrate an approach to accessing ultrastable glasses via the glass-to-glass transition, a bulk transformation that is inherently free from size constraints and anisotropy. The resulting ultrastable glass exhibits a significantly enhanced density (improved by 2.3%), along with high thermodynamic, kinetic, and mechanical stability. Furthermore, we propose that this method of accessing ultrastable glasses is general for metallic glasses, based on the examination of the competitive relationship between the glass-to-glass transition and crystallization. This strategy is expected to facilitate the proliferation of the ultrastable glass family, helping to resolve the instability issues of glass materials and devices and deepen our understanding of glasses and the glass transition.

Date: 2025
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DOI: 10.1038/s41467-024-55367-8

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