Molecular Electronics Laboratory, Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Bangalore 560064, India.
Department of Physics, Politecnico Di Milano , Piazza Leonardo Da Vinci, Milano, Italy 20133, United States.
ACS Appl Mater Interfaces. 2017 Aug 23;9(33):28010-28018. doi: 10.1021/acsami.7b06834. Epub 2017 Aug 14.
With recent progress in flexible electronics, developing facile one-step techniques for fabricating stretchable conductors and interconnects remain essential. It is also desirable for these processes to have a small number of processing steps, incorporate micropatterning, and be capable of being effortlessly implemented for manufacturing of wearable logic circuits. A low vacuum flash evaporation of Au nanoclusters is proposed as a facile method to fabricate highly stretchable conductors capable of fulfilling all such requirements. High metal-elastomer adhesion on textured substrates ensures low surface resistances (100% strain ≈ 25 Ω-sq) where thin film Au accommodate strain like a "bellow". Stretchability for conductors deposited on non-prestretched textured substrates up to 150% and smooth PDMS substrates up to 200% are shown. The system is modeled on a microscopic system calculating 2-D current continuity equations. Devising low cost techniques for fabricating stretchable conductors remains essential and in that direction stretchable circuits, heating elements have been demonstrated.
随着柔性电子技术的最新进展，开发简便的一步法技术来制造可拉伸导体和互连仍然至关重要。这些工艺还需要具有较少的处理步骤、微图案化，并能够轻松地用于制造可穿戴逻辑电路。提出了一种低真空闪蒸 Au 纳米团簇的方法，以制造能够满足所有这些要求的高拉伸性导体。在纹理化基底上，金属-弹性体的高附着力确保了低表面电阻（100%应变≈25 Ω-sq），其中薄膜 Au 像“风箱”一样适应应变。在未经预拉伸的纹理化基底上沉积的导体的拉伸性高达 150%，在光滑的 PDMS 基底上的拉伸性高达 200%。该系统基于计算二维电流连续性方程的微观系统进行建模。设计用于制造可拉伸导体的低成本技术仍然至关重要，为此已经展示了可拉伸电路和加热元件。
