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Article Dans Une Revue International Journal of Extreme Manufacturing Année : 2019

Precise assembly and joining of silver nanowires in three dimensions for highly conductive composite structures

Résumé

Three-dimensional (3D) electrically conductive micro/nanostructures are now a key component in a broad range of research and industry fields. In this work, a novel method is developed to realize metallic 3D micro/nanostructures with silver-thiol-acrylate composites via two-photon polymerization followed by femtosecond laser nanojoining. Complex 3D micro/nanoscale conductive structures have been successfully fabricated with ~200 nm resolution. The loading of silver nanowires (AgNWs) and joining of junctions successfully enhance the electrical conductivity of the composites from insulating to 92.9 S m−1 at room temperature. Moreover, for the first time, a reversible switching to a higher conductivity is observed, up to ~105 S m−1 at 523 K. The temperature-dependent conductivity of the composite is analyzed following the variable range hopping and thermal activation models. The nanomaterial assembly and joining method demonstrated in this study pave a way towards a wide range of device applications, including 3D electronics, sensors, memristors, micro/nanoelectromechanical systems, and biomedical devices, etc.
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Dates et versions

hal-02141746 , version 1 (16-07-2020)

Identifiants

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Ying Liu, Wei Xiong, Da Wei Li, Yao Lu, Xi Huang, et al.. Precise assembly and joining of silver nanowires in three dimensions for highly conductive composite structures. International Journal of Extreme Manufacturing, 2019, 1 (2), pp.025001. ⟨10.1088/2631-7990/ab17f7⟩. ⟨hal-02141746⟩
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