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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2011-08-30
Enhanced Polarization in Tadpole-Shaped (Ni, Al)/AlN Nanoparticles and Microwave Absorption at High Frequencies
By
Hao Huang,

    Dr. Hao Huang

    School of Materials Science and Engineering

    Dalian University of Technology

    China

    Homepage

Fang Hong Xue,

    Dr. Fang Hong Xue

    School of Materials Science and Engineering

    Dalian University of Technology

    China

    Homepage

Bo Lu,

    Dr. Bo Lu

    School of Materials Science and Engineering

    Dalian University of Technology

    China

    Homepage

Fei Wang,

    Dr. Fei Wang

    School of Materials Science and Engineering

    Dalian University of Technology

    China

    Homepage

Xing Dong,

    Dr. Xing Dong

    Dalian University of Technology

    China

    Homepage

Won Jo Park

    Dr. Won Jo Park

    School of Mechanical and Aerospace Engineering

    Gyeongsang National University

    South Korea

    Homepage

Progress In Electromagnetics Research B, Vol. 34, 31-46, 2011
doi:10.2528/PIERB11071101 | Google Scholar

Abstract
Tadpole-shaped (Ni, Al)/AlN nanoparticles were synthesized via evaporating Ni-Al alloy in a mixed atmosphere of N2 and H2. As a counterpart, the spherical-shaped (Ni, Al)/Al2O3 The electromagnetic parameters of as-made nanoparticles/paraffin composites were then investigated in the frequency range of 2-18 GHz. Excellent microwave absorption can be obtained for the tadpole-shaped (Ni, Al)/AlN-paraffin composite at high frequencies and in a thin layer, which is thought to be the result of the enhanced polarization in the anisotropic tadpole-shaped nanoparticles. With the increasing of the composite thickness, the frequency of effective reflection loss shifts towards lower frequencies due to an improved impedance match and absorption.
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Citation
Hao Huang, Fang Hong Xue, Bo Lu, Fei Wang, Xing Dong, and Won Jo Park, "Enhanced Polarization in Tadpole-Shaped (Ni, Al)/AlN Nanoparticles and Microwave Absorption at High Frequencies," Progress In Electromagnetics Research B, Vol. 34, 31-46, 2011.
doi:10.2528/PIERB11071101
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