Ni filled flexible multi-walled carbon nanotube-polystyrene composite films as efficient microwave absorbers

Ni filled flexible multi-walled carbon nanotube-polystyrene composite films as efficient microwave absorbers

In this letter, we report flexible, non corrosive, and light weight nickel nanoparticle@multi-walled carbon nanotube-polystyrene (Ni@MWCNT/PS) composite films as microwave absorbing material in the frequency range of S band (2-4 GHz). Dielectric permittivity and magnetic permeability of composites h...

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Veröffentlicht in:Applied physics letters 2011-09, Vol.99 (11), p.113116-113116-3
Hauptverfasser: Kumar Srivastava, Rajesh, Narayanan, T. N., Reena Mary, A. P., Anantharaman, M. R., Srivastava, Anchal, Vajtai, Robert, Ajayan, Pulickel M.
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container_end_page 113116-3
container_issue 11
container_start_page 113116
container_title Applied physics letters
container_volume 99
creator Kumar Srivastava, Rajesh
Narayanan, T. N.
Reena Mary, A. P.
Anantharaman, M. R.
Srivastava, Anchal
Vajtai, Robert
Ajayan, Pulickel M.
description In this letter, we report flexible, non corrosive, and light weight nickel nanoparticle@multi-walled carbon nanotube-polystyrene (Ni@MWCNT/PS) composite films as microwave absorbing material in the frequency range of S band (2-4 GHz). Dielectric permittivity and magnetic permeability of composites having 0.5 and 1.5 wt. % filler amount were measured using the cavity perturbation technique. Reflection loss maxima of −33 dB (at 2.7 GHz) and −24 dB (at 2.7 GHz) were achieved for 0.5 and 1.5 wt. % Ni@MWCNT/PS composite films of 6 and 4 mm thickness, respectively, suggesting that low concentrations of filler provide significant electromagnetic interference shielding.
doi_str_mv 10.1063/1.3638462
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title Ni filled flexible multi-walled carbon nanotube-polystyrene composite films as efficient microwave absorbers
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