Extinction Capability of Carbon Nanofibers to Millimeter Wave

Abstract:

Carbon nanofibers, whose diameter is between carbon nanotubes and conventional carbon fibers, is a new type of nanomaterials with features of good absorbing performance, small size and low density, and is easy to meet the requirements of passive interference materials.To study the interference properties of carbon nanofibers to millimeter wave, the interaction model of carbon nanofibers and electromagnetic field is established in this paper. The integral equation of the carbon nanofibers inductive current is established and solved by using of the method of moment, and the formula of mass extinction coefficient is obtained. The relationships between the mass extinction coefficient of carbon nanofibers and the millimeter wavelength, the diameter and length of fibers are analyzed via programming by Matlab. It is revealed that the extinction capability of carbon nanofibers decreases as the wavelength of millimeter wave increases. The larger the ratio of length to diameter of carbon nanofibers, the better its extinction capability to millimeter wave will be.

• Periodical: Key Engineering Materials (Volume 787)
• Pages: 87-92
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.787.87
• Online since: November 2018
• Authors: Hong Xia Wang*, Weijun Hou, Yi Wei Wei, Dai Zhi Liu
• Keywords: Carbon Nanofibers, Mass Extinction Coefficient, Method of Moment, Millimeter Wave

References

[1] G G Tibbetts, M L Lake, K L Strong,B P Rice, A review of the fabrication and properties of vapor-grown carbon nanofiber/polymer composites, Comp.Sci.& Technol. 67 (2007) 1709 -1718.

DOI: 10.1016/j.compscitech.2006.06.015

[2] H S Sim, S P Lau, H Y Yang, L K Ang, Reliable and flexible carbon-nanofiber-based all-plastic field emission devices, Appl Phys Lett.90 (2007) 143103-143103-3.

DOI: 10.1063/1.2719239

[3] S Sainio, H Jiang ,M A Caro ,J Koehne, O Lopez-Acevedo, Structural morphology of carbon nanofibers grown on different substrates.Carbon. 98 (2016) 343-351.

DOI: 10.1016/j.carbon.2015.11.021

[4] B S Villacorta, A A Ogale, Morphological influence of carbon modifiers on the electromagnetic shielding of their linear low density polyethylene composites, Appl. Poly. Sci.131 (2015) 205-212.

DOI: 10.1002/app.41055

[5] B S Villacorta, A Mcdowell, T H Hubing, A A Ogale, Polarized wave electromagnetic shielding of anisotropic carbon nanomodifier-based LLDPE composites.Poly. Eng. Sci. 55 (2015) 299-307.

DOI: 10.1002/pen.23901

[6] J He, T Yu, N Geng, L Carin, Method of moments analysis of electromagnetic scattering from a general three-dimensional dielectric target embedded in a multilayered medium, Radio Sci.35 (2016) 305-313.

DOI: 10.1029/1999rs002230

[7] S M Rao, G K Gothard, A new technique to generate a sparse matrix using the method of moments for electromagnetic scattering problems,Microw. Opt. Techn. Let.19 (2015) 271-274.

DOI: 10.1002/(sici)1098-2760(199811)19:4<271::aid-mop8>3.0.co;2-h

[8] T N Killian, S M Rao, M E Baginski, Electromagnetic Scattering From Electrically Large Arbitrarily-Shaped Conductors Using the Method of Moments and a New Null-Field Generation Technique, IEEE T. Antenn. Propag. 59 (2011) 537-545.

DOI: 10.1109/tap.2010.2096186

[9] H X Wang, Q H Zhang, H H Sun, Analysis for Extinction Capability of Carbon Nanofibers by Moment Method, Advanced Materials Research. 712-715 (2013) 220-223.

DOI: 10.4028/www.scientific.net/amr.712-715.220