scholarly journals Electromagnetic interference (EMI) shielding, microwave absorption, and optical sensing properties of BaM/CCTO composites in Ku-band

2019 ◽  
Vol 13 ◽  
pp. 102307 ◽  
Author(s):  
J. Mohammed ◽  
T. Tchouank Tekou Carol ◽  
H.Y. Hafeez ◽  
D. Basandrai ◽  
Gopala Ram Bhadu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Optical Sensing ◽  
Emi Shielding ◽  
Sensing Properties ◽  
Ku Band

Design of nano-sized Pr3+–Co2+-substituted M-type strontium hexaferrites for optical sensing and electromagnetic interference (EMI) shielding in Ku band

2019 ◽  
Vol 125 (4) ◽  
Author(s):  
J. Mohammed ◽  
Tchouank Tekou Carol Trudel ◽  
H. Y. Hafeez ◽  
D. Basandrai ◽  
Gopala Ram Bhadu ◽  
...  
Keyword(s):  
Electromagnetic Interference ◽  
Optical Sensing ◽  
Emi Shielding ◽  
Strontium Hexaferrites ◽  
Ku Band

Sustainable wood-based composites for microwave absorption and electromagnetic interference shielding

2020 ◽  
Vol 8 (46) ◽  
pp. 24267-24283 ◽  
Author(s):  
Ming Zhou ◽  
Weihua Gu ◽  
Gehuan Wang ◽  
Jing Zheng ◽  
Chunchuan Pei ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding

In this review, wood-based composites for efficient EMI shielding and MA are comprehensively introduced.

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.

Electromagnetic Interference Shielding Characteristics of Carbon Nanofiber-Polymer Composites

2007 ◽  
Vol 7 (2) ◽  
pp. 549-554
Author(s):  
Yonglai Yang ◽  
Mool C. Gupta ◽  
Kenneth L. Dudley ◽  
Roland W. Lawrence
Keyword(s):  
Electromagnetic Interference ◽  
Carbon Nanofiber ◽  
Frequency Region ◽  
Shielding Effectiveness ◽  
Emi Shielding ◽  
Frequency Range ◽  
Electromagnetic Interference Shielding ◽  
Emi Shielding Effectiveness ◽  
Frequency Independent ◽  
Ku Band

Electromagnetic interference (EMI) shielding characteristics of carbon nanofiber-polystyrene composites were investigated in the frequency range of 12.4–18 GHz (Ku-band). It was observed that the shielding effectiveness of such composites was frequency independent, and increased with increasing carbon nanofiber loading within Ku-band. The experimental data exhibited that the shielding effectiveness of the polymer composite containing 20 wt% carbon nanofibers could reach more than 36 dB in the measured frequency region, indicating such composites can be applied to the potential EMI shielding materials. In addition, the results showed that the contribution of reflection to the EMI shielding effectiveness was much larger than that of absorption, implying the primary EMI shielding mechanism of such composites was reflection of electromagnetic radiation within Ku-band.

scholarly journals Comparison of Experimental and Modeled EMI Shielding Properties of Periodic Porous xGNP/PLA Composites

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1233 ◽  
Author(s):  
Avi Bregman ◽  
Eric Michielssen ◽  
Alan Taub
Keyword(s):  
Aspect Ratio ◽  
Polymer Composites ◽  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Composite Structures ◽  
Electromagnetic Properties ◽  
Poly Lactic Acid ◽  
Throughput Optimization ◽  
Emi Shielding ◽  
Shielding Properties

Microwave absorbing materials, particularly ones that can achieve high electromagnetic interference (EMI) absorption while minimizing weight and thickness are in high demand for many applications. Herein we present an approach that relies on the introduction of periodically placed air-filled pores into polymer composites in order to reduce material requirements and maximize microwave absorption. In this study, graphene nano platelet (xGNP)/poly-lactic acid (PLA) composites with different aspect ratio fillers were characterized and their complex electromagnetic properties were extracted. Using these materials, we fabricated non-perfect electrical conductor (PEC) backed, porous composites and explored the effect of filler aspect ratio and pore geometry on EMI shielding properties. Furthermore, we developed and experimentally verified a computational model that allows for rigorous, high-throughput optimization of absorbers with periodic porous geometries. Finally, we extend the modeling approach to explore the effect of pore addition on PEC-backed composites. Our composite structures demonstrated decreased fractions of reflected power and increased fractions of absorbed power over the majority of the X Band due to the addition of periodically arranged cylindrical pores. Furthermore, we showed that for xGNP/PLA composite material, reflection loss can be increased by as much as 13 dB through the addition of spherical pores. The ability to adjust shielding properties through the fabrication of polymer composites with periodically arranged pores opens new strategies for the modeling and development of new microwave absorption materials.

Outstanding electromagnetic interference shielding effectiveness of polyvinylbutyral–polyaniline nanocomposite film

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 79058-79065 ◽  
Author(s):  
Pritom J. Bora ◽  
Gaurav Lakhani ◽  
Praveen C. Ramamurthy ◽  
Giridhar Madras
Keyword(s):  
Electromagnetic Interference ◽  
Nanocomposite Film ◽  
Shielding Effectiveness ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Solution Processed ◽  
X Band ◽  
Electromagnetic Interference Shielding Effectiveness ◽  
Polyaniline Nanocomposite ◽  
Ku Band

In this study, we studied the electromagnetic interference (EMI) shielding property of a solution processed polyvinylbutyral–polyaniline nanocomposite (PVBPN) film in the X-band (8.2–12.4 GHz) and Ku-band (12.4–18 GHz) frequency.

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