6xshue hohfwurpdjqhwlf zdyh devruelqj ...10.1038...6xshue hohfwurpdjqhwlf zdyh devruelqj frpsrvlwhv...
TRANSCRIPT
![Page 1: 6XSHUE HOHFWURPDJQHWLF ZDYH DEVRUELQJ ...10.1038...6XSHUE HOHFWURPDJQHWLF ZDYH DEVRUELQJ FRPSRVLWHV EDVHG RQ ODUJH VFDOH JUDSKHQH DQG FDUERQ QDQRWXEH ILOPV -LQVRQJ /L :HLEDQJ /X -RQJKZDQ](https://reader034.vdocuments.site/reader034/viewer/2022051802/5ae84e4c7f8b9a870490a08d/html5/thumbnails/1.jpg)
Superb electromagnetic wave-absorbing composites based on large-scale
graphene and carbon nanotube films
Jinsong Li1,2, Weibang Lu3, Jonghwan Suhr4, Hang Chen5, John Q. Xiao5 and Tsu-Wei Chou2★
1 School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China.
2 Department of Mechanical Engineering, University of Delaware, Newark, DE 19716, United
States.
3 Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123,
China.
4 Department of Polymer Science and Engineering, Sungkyunkwan University, Suwon 440-746,
Republic of Korea.
5 Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, United States.
★ Corresponding author email: [email protected]
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Supplementary Note 1. SEM images of CNT film and CNT-Fe3O4-graphene film.
Supplementary Figure 1| (a) SEM image of CNT film. (b) SEM image of CNT-Fe3O4-graphene
film.
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Supplementary Note 2. Process of the CNT film-Fe3O4-grpahene composite.
Supplementary Figure 2| Schematic of the process of the CNT film-Fe3O4-graphene composite.
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Supplementary Note 3. CNT film has good wettability with ethylene glycol, CNT film was
completely immersed in the reaction solution.
Supplementary Figure 3| Photo images of (a) wettability of CNT film with ethylene glycol and (b)
CNT film immersed in ethylene glycol.
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Supplementary Note 4. Relative complex permittivity and permeability of the CNT film-Fe3O4
composites with one, two, three, four, five, six and seven layers prepared from 0.05 M FeCl3.
0 2 4 6 8 10 12 14 16 180
5
10
15
20
25
30
35
Rea
l per
mit
tivi
ty
Frequency (GHz)
CNT film-Fe3O
4-1layer
CNT film-Fe3O
4-2layers
CNT film-Fe3O
4-3layers
CNT film-Fe3O
4-4layers
CNT film-Fe3O
4-5layers
CNT film-Fe3O
4-6layers
CNT film-Fe3O
4-7layers
a
0 2 4 6 8 10 12 14 16 180
5
10
15
20
25
Imag
inar
y pe
rmit
tivi
ty
Frequency (GHz)
b
0 2 4 6 8 10 12 14 16 180.5
1.0
1.5
2.0
Rea
l per
mea
bili
ty
Frequency (GHz)
c
0 2 4 6 8 10 12 14 16 18-0.5
0.0
0.5
1.0
Imag
inar
y p
erm
eabi
lity
Frequency (GHz)
d
Supplementary Figure 4| (a) real and (b) imaginary parts of the complex permittivity; (c) real and
(d) imaginary parts of complex permeability of the CNT film-Fe3O4 composites with one, two, three,
four, five, six and seven layers prepared from 0.05 M FeCl3.
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Supplementary Note 5. Relative complex permittivity and permeability of the CNT film-Fe3O4
composites with six-layers prepared from 0.01, 0.02, 0.03, 0.04, 0.05 and 0.10 M FeCl3.
0 2 4 6 8 10 12 14 16 180
5
10
15
20
25
30
Rea
l per
mit
tivi
ty
Frequency (GHz)
CNT film-Fe3O
4-0.01M
CNT film-Fe3O
4-0.02M
CNT film-Fe3O
4-0.03M
CNT film-Fe3O
4-0.04M
CNT film-Fe3O
4-0.05M
CNT film-Fe3O
4-0.10M
a
0 2 4 6 8 10 12 14 16 180
2
4
6
8
10
12
Imag
inar
y pe
rmitt
ivity
Frequency (GHz)
b
0 2 4 6 8 10 12 14 16 180.6
0.9
1.2
1.5
Rea
l per
mea
bili
ty
Frequency (GHz)
c
0 2 4 6 8 10 12 14 16 18-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
Imag
inar
y p
erm
eabi
lity
Frequency (GHz)
d
Supplementary Figure 5| (a) real and (b) imaginary parts of the complex permittivity; (c) real and
(d) imaginary parts of complex permeability of the CNT film-Fe3O4 composites with six-layers
prepared from 0.01, 0.02, 0.03, 0.04, 0.05 and 0.10 M FeCl3.
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Supplementary Note 6. Relative complex permittivity and permeability of the CNT film-Fe3O4
-0.04 M-LSG composites with one, two, three, four, five and six layers of graphene.
0 2 4 6 8 10 12 14 16 180
5
10
15
20
25
30
35
40
45
50
Rea
l per
mea
bili
ty
f (GHz)
CNT film-Fe3O
4-4-1L LSG
CNT film-Fe3O
4-4-2L LSG
CNT film-Fe3O
4-4-3L LSG
CNT film-Fe3O
4-4-4L LSG
CNT film-Fe3O
4-4-5L LSG
CNT film-Fe3O
4-4-6L LSG
a
0 2 4 6 8 10 12 14 16 180
5
10
15
20
25
Imag
inar
y pe
rmea
bili
tyf (GHz)
b
0 2 4 6 8 10 12 14 16 180.5
1.0
1.5
Rea
l per
mit
tivity
f (GHz)
c
0 2 4 6 8 10 12 14 16 18-1.0
-0.5
0.0
0.5
Imag
inar
y pe
rmit
tivity
f (GHz)
d
Supplementary Figure 6| (a) real and (b) imaginary parts of the complex permittivity; (c) real and
(d) imaginary parts of complex permeability of the CNT film-Fe3O4 -0.04 M-LSG composites with
one, two, three, four, five and six layers of graphene.