Linear magnetoresistance in gold foams

Li, Zhaoguo; Luo, Jiangshan; Tan, Xinxin; Fang, Q.; Zeng, Yong; Meng, Lingbiao; Zhou, Minjie; Wu, Weidong; Zhang, Jicheng

doi:10.1039/c7ra03979d

Cited by 3 publications

(1 citation statement)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 4d shows a room-temperature electrical conductivity-versus-hardness landscape for NAC and various nanoporous conductive materials such as conventional nanoporous metals, nanoporous ceramics, and metal-organic frameworks (MOFs). [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] Among the materials compared, NAC has the advantages of super-high hardness and electrical conductivity simultaneously. It has higher hardness values than nanoporous conductive ceramics, up to nearly twice that of Ndoped SiC, and its conductivity is comparable to conductive metals.…”

Section: Mechanical and Electrical Propertiesmentioning

confidence: 99%

Engineering a Hierarchy of Disorder: A New Route to Synthesize High‐Performance 3D Nanoporous All‐Carbon Materials**

Lee,

Loh,

Yeo

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

We report a new nanoporous amorphous carbon (NAC) structure that achieves both ultrahigh strength and high electrical conductivity, which are usually incompatible in porous materials. By using modified spark plasma sintering, we create three amorphous carbon phases with different atomic bonding configurations. The composite consists of an amorphous sp2‐carbon matrix mixed with amorphous sp3‐carbon and amorphous graphitic motif. NAC structure has isotropic electrical conductivity of up to 12,000 S/m, a Young's modulus of up to ∼5 GPa, and Vickers hardness of over 900 MPa. These properties are superior to those of existing conductive nanoporous materials. Direct investigation of the multiscale structure of this material through transmission electron microscopy (TEM), electron energy loss spectroscopy (EELS), and machine learning‐based electron tomography revealed that the origin of the remarkable material properties is the well‐organized sp2/sp3 amorphous carbon phases with a core‐shell‐like architecture, where the sp3‐rich carbon forms a resilient core surrounded by a conductive sp2‐rich layer. Our research not only introduces novel material with exceptional properties, but also opens new opportunities for exploring amorphous structures and designing high‐performance materials.This article is protected by copyright. All rights reserved

show abstract