High performance microwave absorption through multi-scale metacomposite by intergrating Ni@C nanocapsules with millimetric polystyrene sphere. (7th August 2018)

• Record Type: Journal Article
• Authors: Liu, R G; Li, Y X; Li, C H; Wang, J Y; Wang, Z H; Zhang, Y H; Qi, F; Zhang, X F
• Is Part Of: Journal of physics. Volume 51:Number 36(2018)
• Publication Date: 2018-08-07
• Subjects: metacomposite -- microwave absorption -- multi-scale; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/aad4f0
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: We demonstrated the desirable microwave absorption properties in a 3D Ni@C/polystyrene (PS) sphere metacomposite, originated from the electromagnetic transform between the permittivity and the permeability. The metacomposite is composed of an array of millimetric PS spheres coated by high-performance Ni@C nanocapsule microwave absorbents. Such a phenomenon is caused by the near-field electromagnetic interaction, modeled by a theoretical simulation, resulting in the reciprocal resonances for the dielectric and magnetic loss factors. The resonance frequencies are proportional to the PS sphere size. This study provides a bottom-up strategy to fabricate the metacomposite and meanwhile has important implications in understanding the electromagnetic transformation.