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Updated: Jan 26, 2026

Quantitative Hardness Measurement by Instrumented AFM-indentation
Published on: November 22, 2016
Nanoscale Mechanical Properties and Indentation Recovery of PI@GO Composites Measured Using AFM
Ji Zhou1,2, Qiang Cai3, Fu Xu4
1College of Civil Engineering, Hunan University of Science and Engineering, Yongzhou 425006, China. hnkjxy_zhouji@163.com.
Abstract:
Polyimide@graphene oxide (PI@GO) composites were prepared by way of a simple solution blending method. The nanoscale hardness and Young's modulus of the composites were measured using nanoindentation based on atomic force microscopy (AFM). A nanoscale hardness of ~0.65 GPa and an elastic modulus of ~6.5 GPa were reached with a load of ~55 μN. The indentation recovery on the surface of PI@GO was evaluated. The results show that relatively low GO content can remarkably improve the nanoscale mechanical properties of PI.
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