文档介绍：Published online：2022-06-24 09:21:50
URL：.
SCIENCnt-type to magnetic-type/dielec-
were proposed in the 20th century [1–3]. With the expeditious tric-type have been brought into the focus of materials scientists.
development of EMW theories, stealth technologies have been Carbonic materials and metal oxides, in particular, are the most
expanded in the late 20th century [4]. studied systems [13]. It has been reported that core-shell hybrids
The properties of the aircrafts’ stealth ability are determined of Fe3O4 nanocrystals/mesoporous carbon hollow spheres can
by two factors, EMW absorbing coatings and configuration achieve an ultrawide absorption band of GHz with a coating
designs. EMW absorbing coatings are composed of absorbing thickness of mm [14]. For stealth coating usage, mesoporous
agents and basal materials [5]. Furthermore, the stealth abilities or porous carbon component is beneficial to abating the areal
of EMW absorbing coatings are characterized through electro- density, which has become one of the research hotspots [15,16].
magnetic parameters, including relative complex permittivity εr Morphology construction design has been proved to be a
(εr = ε′ – jε′′) and relative complex permeability μr (μr = μ′ – jμ′′) practica