Exceptional electromagnetic interference shielding and microwave absorption properties of room temperature synthesized polythiophene thin films with double negative characteristics (DNG) in the Ku-band region

2019 ◽  
Vol 355 ◽  
pp. 196-207 ◽  
Author(s):  
Gopal Kulkarni ◽  
Priyanka Kandesar ◽  
Ninad Velhal ◽  
Varsha Phadtare ◽  
Aviraj Jatratkar ◽  
...  
Keyword(s):  
Thin Films ◽  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Room Temperature ◽  
Double Negative ◽  
Electromagnetic Interference Shielding ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Band Region ◽  
Ku Band

Improved microwave absorption and electromagnetic interference shielding properties based on graphene–barium titanate and polyvinylidene fluoride with varying content

2017 ◽  
Vol 1 (12) ◽  
pp. 2519-2526 ◽  
Author(s):  
Ao-Ping Guo ◽  
Xiao-Juan Zhang ◽  
Jia-Kang Qu ◽  
Shan-Wen Wang ◽  
Jia-Qiang Zhu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Polyvinylidene Fluoride ◽  
Core Shell ◽  
Electromagnetic Interference Shielding ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Shielding Properties ◽  
Sample Method ◽  
Method Show

The rGO/BT/PVDF core/shell architectures synthesized with a sample method show superior microwave absorption properties.

Magnetic and Microwave Absorption Properties of Magnetite-Durian Shell Nanocomposite Sheet in Gigahertz Range

2018 ◽  
Vol 775 ◽  
pp. 217-223
Author(s):  
Afraha Baiti Arif ◽  
Rose Farahiyan Munawar ◽  
Qumrul Ahsan ◽  
Maisarah Abu
Keyword(s):  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Filler Content ◽  
Spherical Shape ◽  
Constant Thickness ◽  
Frequency Range ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Weight Percentage ◽  
Durio Zibethinus

In this paper, a novel microwave absorber of thin, light weight, flexible, green and low cost magnetic nanocomposite sheet that can work in high frequency range is fabricated. The vast and increasing numbers in electronic and telecommunication devices has create electromagnetic interference (EMI) in which may lead to application disturbance. Therefore, electromagnetic (EM) wave absorber with the ability of high absorption rate is strongly demanded. Here, durian shell (Durio zibethinus Murray) embedded magnetite (Fe3O4) nanocomposite sheets were prepared via pulping and lumen loading technique. The nanocomposite sheets were fabricated by varying the weight percentage of the filler content (2-10 wt% of Fe3O4) at constant thickness and varying the thickness of the sheets (0.1-1.0 mm) at constant filler content. FESEM micrograph shows that the Fe3O4 nanoparticles are in cubical and spherical shape with the 20–50 nm of size range. The microwave absorption properties of the sheets were tested by a vector network analyze (VNA) in the frequency range of 4-18 GHz. The samples were also tested using vibrating sample magnetometer (VSM) in order to study the magnetic properties. The absorption or maximum reflection loss (RL) of the samples increases continually and the increase of both filler content and sample thickness has led to the shift of dip to lower frequency region.

scholarly journals Preparation and Characterization of CuFe2O4 Nanoparticles by the Sol-Gel Method and Investigation of Its Microwave Absorption Properties at Ku-Band Frequency Using Silicone Rubber

Proceedings ◽  
2018 ◽  
Vol 2 (17) ◽  
pp. 1155 ◽  
Author(s):  
Reza Peymanfar ◽  
Farzaneh Azadi ◽  
Yousef Yassi
Keyword(s):  
Microwave Absorption ◽  
Silicone Rubber ◽  
Electromagnetic Waves ◽  
Sol Gel ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Band Frequency ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ku Band

Recently, using microwave devices that emit electromagnetic waves and enhance the convenience of life have increased; however, they can be harmful to the environment. In this study, CuFe2O4 nanoparticles were prepared through the conventional sol-gel procedure and then were characterized by X-ray powder diffraction (XRD), vibrating sample magnetometer (VSM), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FT-IR), and vector network analyzer (VNA) using S parameters. Results illustrated that pure crystal structure of magnetic nanoparticles has been synthesized by the sol-gel method with magnetic saturation (Ms) of 22 emu/g. Finally, CuFe2O4 nanoparticles were composited by silicone rubber to investigate its microwave absorption properties. Results showed that the CuFe2O4/silicone rubber nanocomposite absorbed more than 94.87% of the microwave irradiation at ku-band frequency with 1.7 mm thickness and the maximum reflection loss was −60.38 dB at 16.1 GHz. Magnetic and dielectric properties of the CuFe2O4 nanoparticles and silicone rubber polymeric matrix in the nanocomposite demonstrated desirable microwave absorption properties.

Enhanced microwave absorption properties of PMMA modified MnFe2O4–polyaniline nanocomposites

2019 ◽  
Vol 21 (9) ◽  
pp. 5068-5077 ◽  
Author(s):  
R. V. Lakshmi ◽  
Parthasarathi Bera ◽  
R. P. S. Chakradhar ◽  
Balamati Choudhury ◽  
Shital Patangrao Pawar ◽  
...  
Keyword(s):  
Combustion Synthesis ◽  
Microwave Absorption ◽  
Polymethyl Methacrylate ◽  
Electromagnetic Interference ◽  
Solution Combustion Synthesis ◽  
Emi Shielding ◽  
Solution Combustion ◽  
Absorption Properties ◽  
Microwave Absorption Properties

Nanocomposites consisting of polymethyl methacrylate modified MnFe2O4 prepared by solution combustion synthesis and polyaniline exhibit enhanced electromagnetic interference (EMI) shielding property.

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