With the phenomenal development of electromagnetic wave communication devices and stealth technology, electromagnetic wave absorbing materials have been attracting attention as antielectromagnetic interference slabs, stealth materials, self-concealing technology, and microwave darkrooms.This book starts with the fundamental theory of electromagnetic wave absorption in loss medium space, followed by a discussion of different microwave absorbents, such as manganese dioxide, iron-based composite powder, conductive polyaniline, barium titanate powder, and manganese nitride. Then, structural absorbing materials are explored, including multilayer materials, new discrete absorbers, microwave absorption coatings, cement-based materials, and structural pyramid materials. Many of the graphics demonstrate not only the principles of physics and experimental results but also the methodology of computing.The book will be useful for graduate students of materials science and engineering, physics, chemistry, and electrical and electronic engineering; researchers in the fields of electromagnetic functional materials and nanoscience; and engineers in the fields of electromagnetic compatibility and stealth design.

Yuping Duan studied materials science and technology at the Dalian University of Technology, Liaoning, China, and received his PhD in materials science and engineering in 2006. He is a professor in the School of Materials Science and Engineering. For more than 15 years, he has researched and taught about electromagnetic functional materials. He has authored (and coauthored) many research papers in the field of microwave absorbing materials.

Hongtao Guan is an associate professor in the School of Materials Science and Engineering at Yunnan University, China. He received his PhD in materials engineering in 2006 from the Dalian University of Technology. His research focuses on nanostructured materials, particularly manganese oxides, for applications in electromagnetic absorption and electrochemical energy storage.

Fundamentals of Electromagnetic Wave Absorbing Theory

Plane Electromagnetic Wave in Lossy Medium Space

Reflection and Refraction of Uniform Plane Waves

Theoretical Fundamentals of Absorbing Materials

References

Different Crystalline Structures and Composition of MnO₂

Effects of a High Magnetic Field on MnO₂

Doped MnO₂

Temperature-Dependent Dielectric Characterization

Theoretical Study of MnO₂

References

FeSi Alloy

Fe-Co-Ni Alloy

Fe-Ni Alloy

Fe-Si-Al Alloy

References

Electromagnetic Properties of Doped PANI

Electromagnetic Properties of ¿-MnO₂/Polyaniline Composites

Theoretical Investigation of Polyaniline

References

Electromagnetic Properties: Barium Titanate Powder

Mn₄N Absorber

References

Introduction

Composition and Structure of the Composite Absorbing Material

Structure Type of the Absorber

Epoxide Resin Composites

Polyurethane Varnish Composites

Other Resins

References

Electrical Properties of Cement Materials

Cement-Based Electromagnetic Shielding Materials

Cement-Based Electromagnetic Absorbing Materials

Summary

References

Design and Analysis of Pyramid Absorbers

Resonant Absorber Based on Carbon-Coated EPS

Test for Microwave Absorbing Capacity

References