Ultra-flexible graphene-metal nanomembrane for wireless applications

Jiejun Zhang (Co-first Author), Haitao Jiang (Co-first Author), Weida Hong, Qing Meng, Zhongying Xue, Miao Zhang, Paul K. Chu, Yongfeng Mei, Ziao Tian*, Zengfeng Di*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Abstract

The advancement of wireless communication raises the demand for flexible, high-performance RF antennas for wearable electronics and flexible communication devices. Traditional approaches focused on reducing the thickness of metal films to enhance flexibility which faces limitations due to the skin effect. Herein, a hybrid graphene-Au nanomembrane is produced by one-step delamination processes to address the limitations of traditional metal films, including flexibility and RF functionality. The graphene-Au nanomembrane features a bond-free van der Waals interface, allowing the Au layer move freely with graphene. This structure mitigates the formation of cracks, enhancing the stretchability to over 14% strain and fatigue resistance. Moreover, this composite overcomes the limitations associated with skin depth, consequently enabling an ultra-thin graphene-Au antenna operating at 8.5 GHz for 5 G communications. We also demonstrate wireless image transmission and electromagnetic stealth. The results underscore the significant impact of the innovative design and materials on flexible wireless technology. © The Author(s) 2025.
Original languageEnglish
Article number27
Journalnpj Flexible Electronics
Volume9
Online published28 Mar 2025
DOIs
Publication statusPublished - 2025

Funding

The work was supported by the National Key R&D Program of China (Grant Nos. 2022YFB3204800, 2022YFB4400100), National Natural Science Foundation of China (Grant Nos. 51925208, 62122082, 52350209), Science and Technology Commission of Shanghai Municipality (Grant No. 21JC1406100), CAS Project for Young Scientists in Basic Research (Grant No. YSBR-081), Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB0670000), and City University of Hong Kong Donation Research Grants (Grant nos. DON-RMG 9229021 and 9220061). Some of the experiments were carried out at the Fudan Nanofabrication Laboratory.

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