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Radio-frequency broadband epsilon-near-zero response in biocompatible silver nanoparticles/polystyrene films with three-dimensional honeycomb-like superstructures

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Abstract

Epsilon-near-zero (ENZ) metamaterials have aroused considerable research due to the unique electromagnetic characteristics. In this work, for the first time, the non-solvent induced phase separation self-assembly method is developed to construct the honeycomb-like superstructures consisting of silver (Ag) nanoparticles and polystyrene (PS) matrix. Most neighboring Ag nanoparticles are separated by a thin PS layer, and only a few neighboring Ag nanoparticles form weak touching. These structures with different characteristics can contribute to positive permittivity response by surface plasmon resonance (SPR) effect and plasma-type negative permittivity response, respectively. These two different dielectric responses cancel each other and thereby the broadband ENZ property is obtained in the superstructures at radio-frequency range, among which the huge enhancement of positive permittivity owing to SPR effect plays the dominant role. The first principles density functional theory demonstrates that the electrical difference between Ag and PS leads to the interfacial polarization by the accumulation of free electrons. The finite-difference time-domain simulations demonstrate that the SPR effect contributes to significant near-field enhancement and thus the enhanced positive permittivity response in the superstructure. This work offers the theoretical foundation and guidance for designing ENZ properties in biocompatible metal/dielectrics composites by SPR effect.

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Data can be made available on request to the corresponding authors.

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Acknowledgements

The researchers would like to acknowledge Deanship of Scientific Research, Taif University for funding this work.

Funding

This research study was supported by the National Natural Science Foundation of China (52101176), Natural Science Foundation of Shandong Province (ZR2020QE006).

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Authors and Affiliations

  1. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, 17923 **gshi Road, **an, 250061, People’s Republic of China

    Haikun Wu, Rui Yin, Peitao **e & Yao Liu

  2. Department of Applied Mathematics, The Hong Kong Polytechnic University, Hong Kong, China

    Zheng Zhang

  3. Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong, China

    Chong Wang

  4. Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia

    Khamael M. Abualnaja

  5. Department of Science and Technology, University College-Ranyah, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia

    Hala M. Abo-Dief

  6. Institute of Photonic Chips, University of Shanghai for Science and Technology, Shanghai, 200093, China

    Qing Hou

  7. Department of Electrical Engineering, Faculty of Engineering, Najran University, Najran, 11001, Saudi Arabia

    Hassan Algadi

  8. College of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, China

    Hassan Algadi

  9. Department of Materials, University of Manchester, Manchester, M13 9PL, UK

    **aodong Liu

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Contributions

All authors have made contributions to this study work. Haikun Wu, Chong Wang, **aodong Liu, Peitao **e, and Yao Liu wrote the manuscript. Haikun Wu, Zheng Zhang, Chong Wang, Qing Hou, Rui Yin, Khamael M. Abualnaja, Hala M. Abo-Dief, and Hassan Algadi all made contributions to experiment, data collection, and data analysis. Peitao **e and Yao Liu gave financial support for this work. All authors read and approved the final manuscript.

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Correspondence to Chong Wang, **aodong Liu, Peitao **e or Yao Liu.

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Wu, H., Zhang, Z., Wang, C. et al. Radio-frequency broadband epsilon-near-zero response in biocompatible silver nanoparticles/polystyrene films with three-dimensional honeycomb-like superstructures. Adv Compos Hybrid Mater 6, 206 (2023). https://doi.org/10.1007/s42114-023-00787-1

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