Spontaneous Orientation Polarization of Anisotropic Equivalent Dipoles Harnessed by Entropy Engineering for Ultra-Thin Electromagnetic Wave Absorber

• DOI: 10.1007/s40820-024-01507-0
• Publication Date: 2024-09-26T09:02:13Z
• Authors: Honghan Wang; Xinyu Xiao; Shangru Zhai; Chuang Xue; Guangping Zheng; Deqing Zhang; Renchao Che; Junye Cheng
• Keywords: Technology; Carbothermal shock; High-entropy alloys; Emblematic shell-core heterointerfaces; T; Ultra-thin thickness; Switchable electron migration modes; Article

Abstract The synthesis of carbon supporter/nanoscale high-entropy alloys (HEAs) electromagnetic response composites by carbothermal shock method has been identified as an advanced strategy for the collaborative competition engineering conductive/dielectric genes. Electron migration modes within HEAs manipulated electronegativity, valence electron configurations and molar proportions constituent elements determine steady state efficiency equivalent dipoles. Herein, enlightened skin-like effect, a reformative using carbonized cellulose paper (CCP) supporter is used to preserve oxygen-containing functional groups (O·) fibers (CCF). Nucleation construction emblematic shell-core CCF/HEAs heterointerfaces are inextricably linked metabolism induced O·. Meanwhile, mode switchable electron-rich sites promotes orientation polarization anisotropic By virtue reinforcement strategy, CCP/HEAs composite prepared 35% ratio Mn element (CCP/HEAs-Mn 2.15 ) achieves efficient wave (EMW) absorption − 51.35 dB at ultra-thin thickness 1.03 mm. mechanisms resulting dielectric properties HEAs-based EMW absorbing materials elucidated combining theoretical calculations with experimental characterizations, which provide bases feasible strategies simulation practical application devices (e.g., ultra-wideband bandpass filter).