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Polyaromatic-hydrocarbon-based carbon copper composites for the suppression of electromagnetic pollution
Author(s) -
Anil Kumar,
Avanish Pratap Singh,
Saroj Kumari,
Pradip Kumar Dutta,
S.K. Dhawan,
Ajay Dhar
Publication year - 2014
Publication title -
journal of materials chemistry a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.637
H-Index - 212
eISSN - 2050-7488
pISSN - 2050-7496
DOI - 10.1039/c4ta01655f
Subject(s) - materials science , electromagnetic shielding , nanocomposite , scanning electron microscope , copper , fourier transform infrared spectroscopy , nanocrystalline material , composite material , transmission electron microscopy , coating , reflection loss , nanoparticle , chemical engineering , metallurgy , nanotechnology , composite number , engineering
A facile method of developing carbon–copper (C–Cu) nanocomposites by coating nanocrystalline Cu on heat-treated polyaromatic hydrocarbons (HTPAHs) has been reported. These synthesized nanocomposites have been extensively characterized by X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), a scanning electron microscope (SEM), and transmission electron microscopy (TEM). The synthesized HTPAHs-based C–Cu nanocomposites exhibit improved mechanical and electrical properties, which could be tailored by varying the Cu nanoparticle loading. The highest electromagnetic interference shielding effectiveness (EMI SE) due to absorption and reflection at 12.4 GHz is 46.1 dB and 12.5 dB, respectively, for a 2 mm thick sample resulting in a total shielding effectiveness of 58.7 dB. This observed shielding effectiveness in these C–Cu nanocomposites is far above the threshold shielding effectiveness required for techno-commercial applications, especially in the Ku band of RF.

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