SpringerOpen Newsletter

Receive periodic news and updates relating to SpringerOpen.

Open Access Nano Express

Nanoscale elastic modulus of single horizontal ZnO nanorod using nanoindentation experiment

Muhammad Yousuf Soomro1, Ijaz Hussain1, Nargis Bano1*, Esteban Broitman2, Omer Nur1 and Magnus Willander1

Author affiliations

1 Department of Science and Technology, Campus Norrköping, Linköping University, Norrköping, SE-60174, Sweden

2 Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping, SE-58183, Sweden

For all author emails, please log on.

Citation and License

Nanoscale Research Letters 2012, 7:146  doi:10.1186/1556-276X-7-146

Published: 21 February 2012


We measure the elastic modulus of a single horizontal ZnO nanorod [NR] grown by a low-temperature hydrothermal chemical process on silicon substrates by performing room-temperature, direct load-controlled nanoindentation measurements. The configuration of the experiment for the single ZnO NR was achieved using a focused ion beam/scanning electron microscope dual-beam instrument. The single ZnO NR was positioned horizontally over a hole on a silicon wafer using a nanomanipulator, and both ends were bonded with platinum, defining a three-point bending configuration. The elastic modulus of the ZnO NR, extracted from the unloading curve using the well-known Oliver-Pharr method, resulted in a value of approximately 800 GPa. Also, we discuss the NR creep mechanism observed under indentation. The mechanical behavior reported in this paper will be a useful reference for the design and applications of future nanodevices.