Cao Liang, Liu Ri, Zhang Wenxiao, Wang Ying, Wang Guoliang, Song Zhengxun, Weng Zhankun, Wang Zuobin
International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, People's Republic of China.
Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, People's Republic of China.
Nanotechnology. 2021 Nov 8;33(5). doi: 10.1088/1361-6528/ac1630.
The nanoprobe is a powerful tool in scanning probe microscopy (SPM) that is used to explore various fields of nanoscience. However, the tips can wear out very fast due to the low stability of conventional probes, especially after the measurement of high currents or lateral friction, which results in image distortion and test imprecision. Herein, a novel functional nanoprobe is presented using graphene sheets in a high-quality graphene solution wrapped round a plasma-treated conventional Pt-Ir coated nanoprobe, which shows highly stability and resistance to degradation, leading to a significantly increased lifetime. Furthermore, we show that the graphene-wrapped nanoprobes have the advantages of enhanced electrical conductivity and reduced tip-sample friction, compared with Pt-Ir coated nanoprobes. The simplicity and low cost of this method make it valuable to various functional graphene-wrapped nanoprobes and applications.
纳米探针是扫描探针显微镜（SPM）中的一种强大工具，用于探索纳米科学的各个领域。然而，由于传统探针的稳定性较低，尤其是在测量高电流或横向摩擦力之后，探针尖端可能会很快磨损，这会导致图像失真和测试不精确。在此，我们提出了一种新型功能性纳米探针，它是在经过等离子体处理的传统铂铱涂层纳米探针周围包裹高质量石墨烯溶液中的石墨烯片制成的，这种纳米探针具有高度稳定性和抗降解性，从而显著延长了使用寿命。此外，我们表明，与铂铱涂层纳米探针相比，石墨烯包裹的纳米探针具有增强的导电性和降低的针尖-样品摩擦力的优点。这种方法的简单性和低成本使其对于各种功能性石墨烯包裹的纳米探针及其应用具有重要价值。
