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The influence of coiled nanostructure on the enhancement of dielectric constants and electromagnetic shielding efficiency in polymer composites
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10.1063/1.3292214
/content/aip/journal/apl/96/4/10.1063/1.3292214
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/4/10.1063/1.3292214

Figures

Image of FIG. 1.
FIG. 1.

Scanning electron microscope (SEM) micrographs of (a) aligned coiled carbon nanotubes (CNTs) with nearly identical diameter and pitch. (b) A mixture of linear and coiled CNTs, (c) uniform dispersion of the CNTs obtained through mutual chemical reaction between CNT and RET functional groups, (d) a high resolution image of the coiled CNT-RET nanocomposite.

Image of FIG. 2.
FIG. 2.

(a) The X-band frequency variation in the real —left axis and imaginary —right axis permittivity of composites, with CCNT (coiled CNTs), mix (a mixture of coiled and single-walled CNTs), and SWCNT (single-walled CNTs) fillers compared with RET polymer (with a nominal value of permittivity ) (b) the frequency variation in of the CNT composites, with CCNTs, mix, SWCNTs, and multiwalled CNT (MWCNT) fillers compared with RET polymer . The inset shows capacitive coupling between alternate windings of the CCNT, which is absent in a SWCNT.

Image of FIG. 3.
FIG. 3.

The frequency variation in the shielding efficiency (SE) of the composites with fillers of (a) the same , and (b) similar diameter.

Tables

Generic image for table
Table I.

The geometrical parameters of the fillers (SWCNTs: single-walled CNTs, MWCNTs: multiwalled CNTs, and CCNTs: coiled CNTs) used for the composites. The intrinsic CNT diameter , coil diameter , and the projected and extended length, are indicated along with the A.R.s relevant for describing the electromagnetic properties.

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/content/aip/journal/apl/96/4/10.1063/1.3292214
2010-01-28
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The influence of coiled nanostructure on the enhancement of dielectric constants and electromagnetic shielding efficiency in polymer composites
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/4/10.1063/1.3292214
10.1063/1.3292214
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