Anomalous mechanical materials squeezing three-dimensional volume compressibility into one dimension

Xingxing Jiang, Maxim S. Molokeev, Liyuan Dong, Zhichao Dong, Naizheng Wang, Lei Kang, Xiaodong Li, Yanchun Li, Chuan Tian, Shiliu Peng, Wei Li and Zheshuai Lin ()
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Xingxing Jiang: Chinese Academy of Sciences
Maxim S. Molokeev: Laboratory of Crystal Physics, Kirensky Institute of Physics, SB RAS
Liyuan Dong: Huazhong University of Science and Technology
Zhichao Dong: Chinese Academy of Sciences
Naizheng Wang: Chinese Academy of Sciences
Lei Kang: Chinese Academy of Sciences
Xiaodong Li: Chinese Academy of Sciences
Yanchun Li: Chinese Academy of Sciences
Chuan Tian: Chinese Academy of Sciences
Shiliu Peng: Chinese Academy of Sciences
Wei Li: Nankai University
Zheshuai Lin: Chinese Academy of Sciences

Nature Communications, 2020, vol. 11, issue 1, 1-7

Abstract: Abstract Anomalous mechanical materials, with counterintuitive stress-strain responding behaviors, have emerged as novel type of functional materials with highly enhanced performances. Here we demonstrate that the materials with coexisting negative, zero and positive linear compressibilities can squeeze three-dimensional volume compressibility into one dimension, and provide a general and effective way to precisely stabilize the transmission processes under high pressure. We propose a “corrugated-graphite-like” structural model and discover lithium metaborate (LiBO2) to be the first material with such a mechanical behavior. The capability to keep the flux density stability under pressure in LiBO2 is at least two orders higher than that in conventional materials. Our study opens a way to the design and search of ultrastable transmission materials under extreme conditions.

Date: 2020
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DOI: 10.1038/s41467-020-19219-5

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