Gradient nanocomposite with metastructure design for broadband radar absorption

Qunfu Fan; Xuezhao Yang; Hongshuai Lei; Yayun Liu; Yixing Huang; Mingji Chen

doi:10.1016/j.compositesa.2019.105698

Gradient nanocomposite with metastructure design for broadband radar absorption

Qunfu Fan, Xuezhao Yang, Hongshuai Lei, Yayun Liu, Yixing Huang^*, Mingji Chen

^*Corresponding author for this work

Institute of Advanced Structure Technology

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

Absorbers with gradient or stepwise gradient design have been demonstrated to be very beneficial for broadband radar absorption. However, it is still rather difficult to achieve strong absorption at low frequencies such as 2 GHz by a thin gradient medium absorber. In this study, metastructure design is introduced to a stepwise gradient nanocomposite containing flaky carbonyl iron power (FCIP) and graphene nanosheet (GNS) as fillers, in order to obtain a thin and ultra-broadband radar absorber. The matrix of the nanocomposite is hybrid of cyanate ester (CE) and Bisphenol-A based epoxy (E51). The absorption band of the fabricated 5 mm thick nanocomposite covers the full measured frequency band (2–18 GHz, 26.5–40 GHz) below −10 dB, except for the range of 5.7–7.6 GHz (below −9dB).

Original language	English
Article number	105698
Journal	Composites Part A: Applied Science and Manufacturing
Volume	129
DOIs	https://doi.org/10.1016/j.compositesa.2019.105698
Publication status	Published - Feb 2020

Keywords

Broadband absorber
Gradient medium
Metastructure
Radar absorbing nanocomposite

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Fan, Q., Yang, X., Lei, H., Liu, Y., Huang, Y., & Chen, M. (2020). Gradient nanocomposite with metastructure design for broadband radar absorption. Composites Part A: Applied Science and Manufacturing, 129, Article 105698. https://doi.org/10.1016/j.compositesa.2019.105698

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title = "Gradient nanocomposite with metastructure design for broadband radar absorption",

abstract = "Absorbers with gradient or stepwise gradient design have been demonstrated to be very beneficial for broadband radar absorption. However, it is still rather difficult to achieve strong absorption at low frequencies such as 2 GHz by a thin gradient medium absorber. In this study, metastructure design is introduced to a stepwise gradient nanocomposite containing flaky carbonyl iron power (FCIP) and graphene nanosheet (GNS) as fillers, in order to obtain a thin and ultra-broadband radar absorber. The matrix of the nanocomposite is hybrid of cyanate ester (CE) and Bisphenol-A based epoxy (E51). The absorption band of the fabricated 5 mm thick nanocomposite covers the full measured frequency band (2–18 GHz, 26.5–40 GHz) below −10 dB, except for the range of 5.7–7.6 GHz (below −9dB).",

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AU - Fan, Qunfu

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AU - Lei, Hongshuai

AU - Liu, Yayun

AU - Huang, Yixing

AU - Chen, Mingji

PY - 2020/2

Y1 - 2020/2

N2 - Absorbers with gradient or stepwise gradient design have been demonstrated to be very beneficial for broadband radar absorption. However, it is still rather difficult to achieve strong absorption at low frequencies such as 2 GHz by a thin gradient medium absorber. In this study, metastructure design is introduced to a stepwise gradient nanocomposite containing flaky carbonyl iron power (FCIP) and graphene nanosheet (GNS) as fillers, in order to obtain a thin and ultra-broadband radar absorber. The matrix of the nanocomposite is hybrid of cyanate ester (CE) and Bisphenol-A based epoxy (E51). The absorption band of the fabricated 5 mm thick nanocomposite covers the full measured frequency band (2–18 GHz, 26.5–40 GHz) below −10 dB, except for the range of 5.7–7.6 GHz (below −9dB).

AB - Absorbers with gradient or stepwise gradient design have been demonstrated to be very beneficial for broadband radar absorption. However, it is still rather difficult to achieve strong absorption at low frequencies such as 2 GHz by a thin gradient medium absorber. In this study, metastructure design is introduced to a stepwise gradient nanocomposite containing flaky carbonyl iron power (FCIP) and graphene nanosheet (GNS) as fillers, in order to obtain a thin and ultra-broadband radar absorber. The matrix of the nanocomposite is hybrid of cyanate ester (CE) and Bisphenol-A based epoxy (E51). The absorption band of the fabricated 5 mm thick nanocomposite covers the full measured frequency band (2–18 GHz, 26.5–40 GHz) below −10 dB, except for the range of 5.7–7.6 GHz (below −9dB).

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Gradient nanocomposite with metastructure design for broadband radar absorption

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