Co/C/Fe/C hierarchical flowers with strawberry-like surface as surface plasmon for enhanced permittivity, permeability, and microwave absorption properties

By Liu Lin, Na He, Tong Wu, P-N Hu, Guoxiu Tong. Chemical Engineering Journal, 2019

221 citations recorded by the source corpus.

Abstract Co/C/Fe/C core–shell hierarchical flowers (CSHFs) with various compositions and surface morphologies were fabricated by hydrothermal–chemical vapor decomposition. Surface-dependent electromagnetic properties were investigated at 2–18 GHz. Due to the localized surface plasmon resonance and coupling, Co/C/Fe/C CSHFs with strawberry-like surface exhibit significantly enhanced permittivity, permeability, exchange resonances, and attenuation compared with Co HFs and Co/C/Fe/C CSHFs with compact particle film. Such performances enable Co/C/Fe/C CSHFs to become excellent absorbers with strong absorption, broad bandwidth, and light weight. This finding demonstrates that the surface and interface designs of plasmonic heterostructures are critical to improve microwave absorption properties for future application.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/6a44ebb2524dd61c03cde59b13159d1ec9478ac1