Fractal Gold Nanoframework for Highly Stretchable Transparent Strain-Insensitive Conductors

Nano Letters
My Duyen HoWenlong Cheng

Abstract

Percolation networks of one-dimensional (1D) building blocks (e.g., metallic nanowires or carbon nanotubes) represent the mainstream strategy to fabricate stretchable conductors. One of the inherent limitations is the control over junction resistance between 1D building blocks in natural and strained states of conductors. Herein, we report highly stretchable transparent strain-insensitive conductors using fractal gold (F-Au) nanoframework based on a one-pot templateless wet chemistry synthesis method. The monolayered F-Au nanoframework (∼20 nm in thickness) can be obtained from the one-pot synthesis without any purification steps involved and can be transferred directly to arbitrary substrates like polyethylene terephthalate, food-wrap, polydimethylsiloxane (PDMS), and ecoflex. The F-Au thin film with no capping agents leads to a highly conductive thin film without any post-treatment and can be stretched up to 110% strain without significantly losing conductivity yet with the optical transparency of 70% at 550 nm. Remarkably, the F-Au thin film shows the strain-insensitive behavior up to 20% stretching strain. This originates from the unique fractal nanomesh-like structure which can absorb external mechanical forces, thus maint...Continue Reading

References

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Citations

May 21, 2019·Advanced Materials·Binghao Wang, Antonio Facchetti
Nov 14, 2019·Advanced Materials·Yunzhi LingWenlong Cheng
Aug 31, 2019·Advanced Materials·Shu GongWenlong Cheng
Nov 30, 2018·Chemical Society Reviews·Bowen ZhuWenlong Cheng
Apr 22, 2020·Angewandte Chemie·Karl HiekelAlexander Eychmüller
Feb 5, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Noritaka SakakibaraKazuo Terashima
Mar 12, 2019·ACS Applied Materials & Interfaces·Hoi Sung LeeSunho Jeong
Aug 19, 2020·ACS Applied Materials & Interfaces·Dong Wook KimUnyong Jeong

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