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Yang C, Cui X, Zhang Z, et al. Fractal dendrite-based electrically conductive composites for laser-scribed flexible circuits. Nat Commun. 2015;6:8150doi: 10.1038/ncomms9150.
Yang, C., Cui, X., Zhang, Z., Chiang, S. W., Lin, W., Duan, H., Li, J., Kang, F., & Wong, C. P. (2015). Fractal dendrite-based electrically conductive composites for laser-scribed flexible circuits. Nature communications, 68150. https://doi.org/10.1038/ncomms9150
Yang, Cheng, et al. "Fractal dendrite-based electrically conductive composites for laser-scribed flexible circuits." Nature communications vol. 6 (2015): 8150. doi: https://doi.org/10.1038/ncomms9150
Yang C, Cui X, Zhang Z, Chiang SW, Lin W, Duan H, Li J, Kang F, Wong CP. Fractal dendrite-based electrically conductive composites for laser-scribed flexible circuits. Nat Commun. 2015 Sep 03;6:8150. doi: 10.1038/ncomms9150. PMID: 26333352; PMCID: PMC4569727.
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Nat Commun. 2015 Sep 03;6:8150. doi: 10.1038/ncomms9150.

Fractal dendrite-based electrically conductive composites for laser-scribed flexible circuits.

Nature communications

Cheng Yang, Xiaoya Cui, Zhexu Zhang, Sum Wai Chiang, Wei Lin, Huan Duan, Jia Li, Feiyu Kang, Ching-Ping Wong

Affiliations

  1. Division of Energy and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China.
  2. School of Materials Science and Engineering, Georgia Institute of Technology, 771, Ferst Dr, Atlanta, Georgia 30332, USA.
  3. School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
  4. Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, China.

PMID: 26333352 PMCID: PMC4569727 DOI: 10.1038/ncomms9150

Abstract

Fractal metallic dendrites have been drawing more attentions recently, yet they have rarely been explored in electronic printing or packaging applications because of the great challenges in large-scale synthesis and limited understanding in such applications. Here we demonstrate a controllable synthesis of fractal Ag micro-dendrites at the hundred-gram scale. When used as the fillers for isotropically electrically conductive composites (ECCs), the unique three-dimensional fractal geometrical configuration and low-temperature sintering characteristic render the Ag micro dendrites with an ultra-low electrical percolation threshold of 0.97 vol% (8 wt%). The ultra-low percolation threshold and self-limited fusing ability may address some critical challenges in current interconnect technology for microelectronics. For example, only half of the laser-scribe energy is needed to pattern fine circuit lines printed using the present ECCs, showing great potential for wiring ultrathin circuits for high performance flexible electronics.

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