Abstract
A novel technique combining both atomic force microscopy (AFM) and scanning electron microscopy (SEM) is used to test the mechanical properties of densely-packed graphene oxide (GO) paper. Individual beams of GO paper with variable widths were prepared using focussed ion beam (FIB) microscopy and tensile tested to failure using the AFM while observing with SEM. A variation in the tensile strength of the GO paper beams up to 64.8 MPa was recorded in the vacuum testing condition. An increase in breaking stress of GO paper with decreasing sample width was determined and proposed as being due to fewer defects present in GO beams of smaller width.
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Acknowledgments
The authors would like to thank Dr Zofia Luklinska and the NanoVision Centre at Queen Mary for the use of facilities and the Queen Mary- Chinese Scholarship Scheme for a PhD award for CW. We thank Prof. Luqi Liu at the National Center for Nanoscience and Technology, China for providing samples of GO.
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Wang, C., Barber, A.H. Combined AFM-SEM testing for mechanical property determination of graphene oxide paper. MRS Online Proceedings Library 1407, 361 (2012). https://doi.org/10.1557/opl.2012.361
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DOI: https://doi.org/10.1557/opl.2012.361