A freestanding 3D heterophase tungsten disulfide-based aerogel as an ultrathin microwave absorber in the Ku-band

Abstract

Ingenious dielectric tuning strategy is still challenging for high-efficiency microwave absorbing (MA) materials with strong absorption at the ultrathin absorber level. In this work, the aerogel with a dual three-dimensional...

Anchoring 1D nanochain-like Co3O4 on a 2D layered Ti3C2Tx MXene with outstanding electromagnetic absorption

“…The EMW absorption performance of an absorber can be characterized by using the attenuation constant ( α ), which can be expressed as: 15,40 …”

Self-Assembled Co Nanosheet/Ti3C2Tx Composites with Tunable Electromagnetic Wave Absorption

“…The degree of impedance matching is expressed by | Z i n / Z o | . When the value of | Z i n / Z o | is close to 1, almost all EMWs can enter the absorbing material. − It can be observed that S3 has higher impedance matching in the frequency range of 11.52–16 GHz (Figure S9, Supporting Information). Obviously, S3 can obtain sufficiently high EMW absorption at a relatively thin thickness.…”

Multistage coupling of interface and core–shell engineering of a cobalt-based heterostructure for integration of multiple electromagnetic absorption

“…Meanwhile, numerous heterointerfaces can offer more conductive paths for electron transfer, i.e., the migration of electrons in PC@IC, and the hopping of electrons by the physical contacts among the adjacent carbon-based materials, which was benecial to the absorber with a high conductivity loss. 14,27 In addition, the heterointerfaces coupled with a core-shell structure and micro-mesoporous characteristics were also potential factors for strengthening the dielectric loss, 6 and because of this several obvious resonant uctuations Fig. 3 (a-e) The 3D RL-f curves, and (f-i) the contour mapping of the samples.…”

“…, the migration of electrons in PC@IC, and the hopping of electrons by the physical contacts among the adjacent carbon-based materials, which was beneficial to the absorber with a high conductivity loss. 14,27 In addition, the heterointerfaces coupled with a core–shell structure and micro-mesoporous characteristics were also potential factors for strengthening the dielectric loss, 6 and because of this several obvious resonant fluctuations can be noted in the ε′′ – f curves. On the other hand, it was clear that the value of μ′ for the N-IC/Co displayed certain advantages (Fig.…”