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Hyperbolically Patterned 3D Graphene Metamaterial with Negative Poisson's Ratio and Superelasticity
Author(s) -
Zhang Qiangqiang,
Xu Xiang,
Lin Dong,
Chen Wenli,
Xiong Guoping,
Yu Yikang,
Fisher Timothy S.,
Li Hui
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201505409
Subject(s) - pseudoelasticity , materials science , graphene , metamaterial , poisson distribution , poisson's ratio , auxetics , casting , nanotechnology , composite material , optoelectronics , microstructure , mathematics , statistics , martensite
A hyperbolically patterned 3D graphene metamaterial (GM) with negative Poisson's ratio and superelasticity is highlighted. It is synthesized by a modified hydrothermal approach and subsequent oriented freeze‐casting strategy. GM presents a tunable Poisson's ratio by adjusting the structural porosity, macroscopic aspect ratio ( L / D ) , and freeze‐casting conditions. Such a GM suggests promising applications as soft actuators, sensors, robust shock absorbers, and environmental remediation.