Terahertz electromagnetic interference shielding using single-walled carbon nanotube flexible films

Seo, Myung Hwan; Yim, Ji Hye; Ahn, Y. H.; Rotermund, F.; Kim, D. S.; Lee, S.; Lim, H.

doi:10.1063/1.3046126

Cited by 70 publications

(49 citation statements)

References 22 publications

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“…High frequency gave rise to larger skin depth, which then requires a larger thickness to achieve the same SE. Lim's group et al [155] have measured the SE in the terahertz range using time-domain terahertz spectroscopy on thin layers of SWCNTs coated on flexible substrates, and the results are in good agreement with the Drude free-electron model. These films demonstrated good shielding of electromagnetic waves in the terahertz range, while transparency to visible light was maintained.…”

Section: High-conductivity Nanocomposites Improved By Adding Freestanmentioning

confidence: 77%

Freestanding single-walled carbon nanotube bundle networks: Fabrication, properties and composites

Zhou

Niu

et al. 2011

Chin. Sci. Bull.

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As a type of thin film, two dimensional (2D) reticulate architectures built of freestanding single-walled carbon nanotube (SWCNT) bundles are suitable for scalable integration into devices and nanocomposites for many applications. The superior properties of these films, such as optical transparency, unique electrical properties and mechanical flexibility, result not only from the outstanding properties of individual SWCNTs but also from the collective behavior of the individual tubes, with additional properties arising from the tube-tube interactions. In this review, the synthesis, structure and fundamental properties, such as conductivity, transparency, optical nonlinearity and mechanical performance, of "freestanding SWCNT bundle network" thin films and nanocomposites, as well as their application as supercapacitors are highlighted. Some long-standing problems and topics warranting further investigation in the near future are addressed. single-walled carbon nanotube (SWCNT), SWCNT bundle network, nanocomposites, multifunctional thin film, supercapacitors Citation:Zhou valently bonded carbon network gives rise to an extremely stable structure, arguably the strongest in nature. The axial Young's modulus has been determined experimentally by several means [6 -11] and is typically between 1-1.8 TPa.The fracture stresses of SWCNT bundles can reach as high as 50 GPa [8,12], which corresponds to a density-normalized strength ~50 times larger than that of steel wires [7]. In addition, the properties of SWCNTs are very sensitive to chemical modification or atomic doping -these processes can give rise to brand-new 1D materials that promise remarkable application. To fully utilize the excellent mechanical and physical properties of individual SWCNTs, various types of SWCNT architectures with different dimensions, including 1D nanotubes or bundles, 2D thin films or networks or papers, and 3D arrays or sponges, have been synthesized and investigated worldwide. Unlike an isolated 1D nanotube, a 2D thin film made up of thousands of SWCNTs exhibits collective behavior, which has an advantage of statistically better reproducibility, making it suitable for scalable integration into devices, nanocomposites and for many applications. Its superior properties, such as optical transparency, unique electric properties and mechanical flexibility, result not only from

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Section: High-conductivity Nanocomposites Improved By Adding Freestanmentioning

confidence: 77%

Freestanding single-walled carbon nanotube bundle networks: Fabrication, properties and composites

Zhou

Niu

et al. 2011

Chin. Sci. Bull.

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“…It has been shown recently that promising shielding performance could be achieved with composites comprising of an electrically non-conducting polymer matrix filled with conducting objects such as CNT-polymer composites, nickel ceramic composites etc. [5][6][7]. However, high filler contents are required from 10-15% for fibers and 30% for spheres to reach a percolation level leading to microwave losses.…”

Section: Introductionmentioning

confidence: 99%

Designing of Nano Composites of Conducting Polymers for EMI Shielding

Dhawan¹,

Ohlan²,

Singh³

2011

Advances in Nanocomposites - Synthesis, Characterization and Industrial Applications

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“…Sundararaj, 2009). SWCNTs thin film demonstrated good shielding of EM wave at terahertz frequency while still maintaining good transparency for visible light (Seo, et al, 2008). Measurement results show that CNT sheets are more effective in providing EMI shielding compared with graphite and carbon black sheets over broad frequency range due to better electron transmission (Wang, et al, 2009).…”

Section: Introductionmentioning

confidence: 99%