Department of Physics and Astronomy, Seoul National University, Seoul, Korea.
Nanotechnology. 2011 Sep 2;22(35):355709. doi: 10.1088/0957-4484/22/35/355709. Epub 2011 Aug 9.
We report a simple but efficient method to prepare metallic nanowire-graphene (MN-G) hybrid nanostructures at a low temperature and show its application to the fabrication of flexible field emission devices. In this method, a graphene layer was transferred onto an anodic alumina oxide template, and vertically aligned Au nanowires were grown on the graphene surface via electrodeposition method. As a proof of concept, we demonstrated the fabrication of flexible field emission devices, where the MN-G hybrid nanostructures and another graphene layer on PDMS substrates were utilized as a cathode and an anode for highly flexible devices, respectively. Our field emission device exhibited stable and high field emission currents even when bent down to the radius of curvature of 25 mm. This MN-G hybrid nanostructure should prove tremendous flexibility for various applications such as bio-chemical sensors, field emission devices, pressure sensors and battery electrodes.
我们报告了一种简单但有效的方法，可在低温下制备金属纳米线-石墨烯（MN-G）杂化纳米结构，并展示了其在柔性场发射器件制造中的应用。在该方法中，将石墨烯层转移到阳极氧化铝模板上，并通过电沉积方法在石墨烯表面上生长垂直排列的 Au 纳米线。作为概念验证，我们演示了柔性场发射器件的制造，其中 MN-G 杂化纳米结构和 PDMS 衬底上的另一个石墨烯层分别用作阴极和阳极，用于制造高度灵活的器件。我们的场发射器件即使在弯曲到 25mm 的曲率半径时也表现出稳定的和高的场发射电流。这种 MN-G 杂化纳米结构应该为各种应用提供巨大的灵活性，例如生物化学传感器、场发射器件、压力传感器和电池电极。
