Flyweight, Superelastic, Electrically Conductive, and Flame-Retardant 3D Multi-Nanolayer Graphene/Ceramic Metamaterial

Qiangqiang Zhang, Dong Lin, Biwei Deng, Xiang Xu, Qiong Nian, Shengyu Jin, Kevin D. Leedy, Hui Li, Gary J. Cheng

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A ceramic/graphene metamaterial (GCM) with microstructure-derived superelasticity and structural robustness is achieved by designing hierarchical honeycomb microstructures, which are composited with two brittle constituents (graphene and ceramic) assembled in multi-nanolayer cellular walls. Attributed to the designed microstructure, well-interconnected scaffolds, chemically bonded interface, and coupled strengthening effect between the graphene framework and the nanolayers of the Al2O3 ceramic (NAC), the GCM demonstrates a sequence of multifunctional properties simultaneously that have not been reported for ceramics and ceramics-matrix-composite structures, such as flyweight density, 80% reversible compressibility, high fatigue resistance, high electrical conductivity, and excellent thermal-insulation/flame-retardant performance simultaneously. The 3D well-ordered graphene aerogel templates are strongly coupled with the NAC by the chemically bonded interface, exhibiting mutual strengthening, compatible deformability, and a linearly dependent relationship between the density and Young's modulus. Considerable size effects of the ceramic nanolayers on the mechanical properties are revealed in these ceramic-based metamaterials. The designed hierarchical honeycomb graphene with a fourth dimensional control of the ceramic nanolayers on new ways to scalable fabrication of advanced multifunctional ceramic composites with controllable design suggest a great potential in applications of flexible conductors, shock/vibration absorbers, thermal shock barriers, thermal insulation/flame-retardant skins, and porous microwave-absorbing coatings.

Original languageEnglish (US)
JournalAdvanced Materials
DOIs
StateAccepted/In press - 2017

Fingerprint

Flame Retardants
Graphite
Metamaterials
Flame retardants
Graphene
Thermal insulation
Microstructure
Ceramic matrix composites
Aerogels
Thermal shock
Formability
Composite structures
Compressibility
Scaffolds
Density (specific gravity)
Skin
Elastic moduli
Microwaves
Fatigue of materials
Fabrication

Keywords

  • "bottom-up" processes
  • Graphene/ceramic metamaterials
  • In situ observations
  • Multi-nanolayers
  • Size effect
  • Superelasticity

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Flyweight, Superelastic, Electrically Conductive, and Flame-Retardant 3D Multi-Nanolayer Graphene/Ceramic Metamaterial. / Zhang, Qiangqiang; Lin, Dong; Deng, Biwei; Xu, Xiang; Nian, Qiong; Jin, Shengyu; Leedy, Kevin D.; Li, Hui; Cheng, Gary J.

In: Advanced Materials, 2017.

Research output: Contribution to journalArticle

Zhang, Qiangqiang ; Lin, Dong ; Deng, Biwei ; Xu, Xiang ; Nian, Qiong ; Jin, Shengyu ; Leedy, Kevin D. ; Li, Hui ; Cheng, Gary J. / Flyweight, Superelastic, Electrically Conductive, and Flame-Retardant 3D Multi-Nanolayer Graphene/Ceramic Metamaterial. In: Advanced Materials. 2017.
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