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Title: Computational prediction of new auxetic materials

Journal Article · · Nature Communications
 [1];  [1];  [1];  [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)

Auxetics comprise a rare family of materials that manifest negative Poisson’s ratio, which causes an expansion instead of contraction under tension. Most known homogeneously auxetic materials are porous foams or artificial macrostructures and there are few examples of inorganic materials that exhibit this behavior as polycrystalline solids. It is now possible to accelerate the discovery of materials with target properties, such as auxetics, using high-throughput computations, open databases, and efficient search algorithms. Candidates exhibiting features correlating with auxetic behavior were chosen from the set of more than 67 000 materials in the Materials Project database. Poisson’s ratios were derived from the calculated elastic tensor of each material in this reduced set of compounds. We report that this strategy results in the prediction of three previously unidentified homogeneously auxetic materials as well as a number of compounds with a near-zero homogeneous Poisson’s ratio, which are here denoted “anepirretic materials”.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1399000
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 90 works
Citation information provided by
Web of Science

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Cited By (13)

Silver Oxalate: Mechanical Properties and Extreme Negative Mechanical Phenomena journal April 2019
stk : A python toolkit for supramolecular assembly journal June 2018
Extreme negative mechanical phenomena in the zinc and cadmium anhydrous metal oxalates and lead oxalate dihydrate journal September 2019
Random auxetics from buckling fibre networks journal October 2019
The role of decomposition reactions in assessing first-principles predictions of solid stability journal January 2019
Conformational control of mechanical networks journal April 2019
Mechanical properties of anhydrous oxalic acid and oxalic acid dihydrate journal January 2019
Systematic exploration of the mechanical properties of 13 621 inorganic compounds journal January 2019
A model of hardness and fracture toughness of solids journal September 2019
Auxetic metamaterials and structures: a review journal January 2018
Anomalous mechanical behavior of the deltic, squaric and croconic cyclic oxocarbon acids journal January 2019
Theoretical investigations on structural, elastic, thermodynamic and electronic properties of Al 3 Ti and Al 3 V compounds in L1 2 structure under high pressure journal February 2019
Random auxetics from buckling fibre networks text January 2019

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