Combining carbon nanotube foam with nanosilver/silicone resin or graphene foam for advanced metamaterial design
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Combining carbon nanotube foam with nanosilver/ silicone resin or graphene foam for advanced metamaterial design Zhenmin Jiao1,2, Dagmar R. D’hooge3,4, Ludwig Cardon2,*, and Jun Qiu1,5,* 1
School of Materials Science and Engineering, Tongji University, Shanghai 201804, People’s Republic of China Centre for Polymer and Material Technologies, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 130, Zwijnaarde, 9052 Ghent, Belgium 3 Laboratory for Chemical Technology, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 125, Zwijnaarde, 9052 Ghent, Belgium 4 Centre for Textile Science and Engineering, Department of Materials, Textiles and Chemical Engineering, Ghent University, Technologiepark 70A, Zwijnaarde, 9052 Ghent, Belgium 5 Key Laboratory of Advanced Civil Engineering Materials, Tongji University, Education of Ministry, Shanghai 201804, People’s Republic of China 2
Received: 30 April 2020
ABSTRACT
Accepted: 2 August 2020
Advanced metamaterials are designed upon the combination of (1) carbon nanotube (CNT) foam, which is obtained from chemical vapor deposition by fully consuming the initial nickel foam, and (2) nanosilver/silicone resin or graphene (Gr) foam. The CNT foam/nanosilver/silicone composite simultaneously exhibits a negative permittivity and permeability in the frequency range from 1 MHz to 1 GHz provided that the appropriate CNT foam amount is considered (20 m%). Double-negative performance in a similar frequency range is obtained with both 3/1 and 1/1 (mass basis) Gr/CNT-based composites. On the other hand, 3/2 (mass basis) Gr/CNT exhibits a negative permeability in the shared frequency range from 6 9 102 MHz to 1 GHz with still negative permittivity in the full range. The Gr amount allows to control the frequency behavior, with a variation in absolute permittivity and permeability values and a switch between a concave and convex behavior. Hence, the work contributes to the further expanding of the application range of metamaterials.
Published online: 31 August 2020
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
Handling Editor: Dale Huber.
Address correspondence to E-mail: [email protected]; [email protected]
https://doi.org/10.1007/s10853-020-05144-x
16212
J Mater Sci (2020) 55:16211–16219
GRAPHIC ABSTRACT
Introduction Metamaterials that have both negative permittivity and permeability are promising materials that have properties beyond the ordinary materials in nature. In the early development of metamaterials, researchers devoted themselves to the construction of regular array structures such as nanoresonant rings and metal rod arrays to achieve negative permittivity and/or a permeability [1–5]. After many years, several researchers broke the traditional concept that the double-negative performance can only be realized through artificially designed repetitive structural units. By adjusting the structure and content of the material itself, a metamaterial results by mean
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