Recent advances in radio-frequency negative dielectric metamaterials by designing heterogeneous composites

P Xie, Z Shi, M Feng, K Sun, Y Liu, K Yan, C Liu… - … Composites and Hybrid …, 2022 - Springer
Dielectric constant (ε, epsilon) is one of the basic physical parameters for materials,
determining the response of materials to electromagnetic waves or electrical field; its value …

Epsilon-negative media from the viewpoint of materials science

G Fan, K Sun, Q Hou, Z Wang, Y Liu… - EPJ Applied …, 2021 - epjam.epj.org
A comprehensive review of the fundamentals and applications of epsilon-negative materials
is presented in this paper. Percolative composites, as well as homogeneous ceramics or …

Negative permittivity behavior in flexible carbon nanofibers-polydimethylsiloxane films

H Wu, H Sun, F Han, P Xie, Y Zhong, B Quan… - Engineered …, 2021 - espublisher.com
Flexible electronic devices have recently become a research hotspot due to their potentials
in different applications. However, there is a lack of studies about flexible metamaterials with …

Tunable negative permittivity in flexible graphene/PDMS metacomposites

K Sun, J Dong, Z Wang, Z Wang, G Fan… - The Journal of …, 2019 - ACS Publications
The flexible metacomposites with tunable negative permittivity have great potential in
wearable cloaks, stretchable sensors, and thin-film capacitors, etc. In this paper, the flexible …

Tunneling-induced negative permittivity in Ni/MnO nanocomposites by a bio-gel derived strategy

P Xie, Y Li, Q Hou, K Sui, C Liu, X Fu, J Zhang… - Journal of Materials …, 2020 - pubs.rsc.org
One-dimensional wires are the most common building blocks in metamaterials. In this study,
zero-dimensional nanoparticles connected by tunneling networks were used to construct …

Doped ceramics of indium oxides for negative permittivity materials in MHz-kHz frequency regions

G Fan, Z Wang, K Sun, Y Liu, R Fan - Journal of Materials Science & …, 2021 - Elsevier
Negative permittivity has been widely studied in various metamaterials and percolating
composites, of which the anomalous dielectric behavior was attributed to critical structural …

Tunable and weakly negative permittivity in carbon/silicon nitride composites with different carbonizing temperatures

C Cheng, R Fan, Z Wang, Q Shao, X Guo, P Xie, Y Yin… - Carbon, 2017 - Elsevier
Despite the exotic electromagnetic properties have been demonstrated in metamaterials to
date, how to effectively adjust negative electromagnetic parameters remains a challenge …

Flexible silver nanowire/carbon fiber felt metacomposites with weakly negative permittivity behavior

K Sun, L Wang, Z Wang, X Wu, G Fan… - Physical Chemistry …, 2020 - pubs.rsc.org
Recently, flexible metacomposites with negative permittivity have triggered extensive
interest owing largely to their promising applications in areas such as sensors, cloaking, and …

Radio frequency negative permittivity in random carbon nanotubes/alumina nanocomposites

C Cheng, R Fan, Y Ren, T Ding, L Qian, J Guo, X Li… - Nanoscale, 2017 - pubs.rsc.org
While metal is the most common conductive constituent element in the preparation of
metamaterials, one-dimensional conductive carbon nanotubes (CNTs) provide alternative …

Temperature dependence of the electromagnetic properties of graphene nanosheet reinforced alumina ceramics in the X-band

Q Yuchang, W Qinlong, L Fa… - Journal of Materials …, 2016 - pubs.rsc.org
Graphene nanosheet (GN)/Al2O3 ceramics were prepared by hot press sintering with a
significant improvement in both mechanical and electromagnetic properties. The excellent …