Vimalanathan Kasturi, Suarez-Martinez Irene, Peiris M Chandramalika R, Antonio Joshua, de Tomas Carla, Zou Yichao, Zou Jin, Duan Xiaofei, Lamb Robert N, Harvey David P, Alharbi Thaar M D, Gibson Christopher T, Marks Nigel A, Darwish Nadim, Raston Colin L
Flinders Institute for Nanoscale Science & Technology, College of Science and Engineering, Flinders University Adelaide SA 5001 Australia
Department of Physics and Astronomy, Curtin University Bentley Campus Perth WA 6102 Australia.
Nanoscale Adv. 2019 Jun 7;1(7):2495-2501. doi: 10.1039/c9na00184k. eCollection 2019 Jul 10.
Two-dimensional graphene has remarkable properties that are revolutionary in many applications. Scrolling monolayer graphene with precise tunability would create further potential for niche applications but this has proved challenging. We have now established the ability to fabricate monolayer graphene scrolls in high yield directly from graphite flakes under non-equilibrium conditions at room temperature in dynamic thin films of liquid. Using conductive atomic force microscopy we demonstrate that the graphene scrolls form highly conducting electrical contacts to highly oriented pyrolytic graphite (HOPG). These highly conducting graphite-graphene contacts are attractive for the fabrication of interconnects in microcircuits and align with the increasing interest in building all sp-carbon circuits. Above a temperature of 450 °C the scrolls unravel into buckled graphene sheets, and this process is understood on a theoretical basis. These findings augur well for new applications, in particular for incorporating the scrolls into miniaturized electronic devices.
二维石墨烯具有卓越的性能，在许多应用中具有革命性意义。具有精确可调性的单层石墨烯卷曲将为特定应用创造更多潜力，但事实证明这具有挑战性。我们现已具备在室温下非平衡条件下，于动态液体薄膜中直接从石墨薄片高产率制备单层石墨烯卷曲的能力。利用导电原子力显微镜，我们证明了石墨烯卷曲与高度取向热解石墨（HOPG）形成了高导电电接触。这些高导电的石墨 - 石墨烯接触对于微电路中互连的制造具有吸引力，并且与构建全sp - 碳电路日益增长的兴趣相契合。在450℃以上的温度下，卷曲会展开成弯曲的石墨烯片，并且这一过程在理论基础上是可以理解的。这些发现为新应用带来了良好的前景，特别是将卷曲纳入小型化电子设备中。
