Diana Aznakayeva: Carbon Nanotubes Composites for Objects Invisibility

posted 19 Jul 2017, 00:40 by info admin
Diana Aznakayeva, Emir Aznakayev

School of Physics and Astronomy, University of Manchester, Manchester, M1 3OJ, UK; 
Electronics Department, National Aviation University, Kiev, 03058, Ukraine

Among the requirements for a modern airplane is a requirement of their invisibility, i.e. low reflectivity with respect to electromagnetic radiation. The reflectivity of the airplane is determined primarily by its construction and dielectric properties of its surface materials. The dielectric properties of different composites from carbon nanotubes were investigated. Experimental investigation of electromagnetic radiation absorption with composites poly-tetrafluorethylene (F4) - CNT with different concentration of CNT was provided. 
These composites are effective surface materials for invisibility of objects. It is found that under decreasing of thickness of the carbon nanotubes composite rapid drop of passing monochromatic electromagnetic radiation intensity is observed. The sample thickness range varies from 0.1 mm to 0.6 mm. This phenomenon is explained due to changing in orientation of the carbon nanotubes. It leads to increased efficiency of monochromatic electromagnetic radiation absorption by the objects. The changes in the intensity of absorbed electromagnetic radiation after passing a laser (monochromatic) radiation through the composite sample F4-CNT of different thickness are presented in Figure (Dependence of the intensity of absorbed electromagnetic radiation I, mJ from thickness d, mm of composite sample F4-CNT).

Diana Aznakayeva is currently an PhD student at the Manchester University, UK. She is primarily interested in the photonics and electrical and optical properties of atomically thin materials such as graphene. She received her B.S. (2010) and M.S. (2012) degrees in Physics from the National Aviation University (Kiev, Ukraine) where she studied the electrical, optical and mechanical properties of carbon nanomaterials. After finishing her M.S. program, she spent 1 year as researcher at the National Aviation University and from 2014 she is a PhD student at the Manchester University. From 2004 to 2013 she provided the scientific research also in the Institute of Biochemistry, Institute of Physics and Institute of Physics of Metals in nanoscience, optics and electronic properties of nanomaterials. She has more than 60 papers and 1 book. She has different National and International awards for her research.