Dmitri Golberg1,2*

 

1Queensland University of Technology (QUT)
2 George Street, Brisbane, QLD 4000,
Australia

2National Institute for Materials Science (NIMS),
Namiki 1, Tsukuba, Ibaraki 3050044,
Japan

 

Property studies of diverse nanomaterials, e.g. their optoelectronic, mechanical, electrical, thermal and cathodoluminescence (CL) performances, are carried out under delicate manipulations in a high-resolution transmission electron microscope (HRTEM) equipped with a variety of in situ TEM holders.1 The objects of interest include nanotubes, nanoparticles, graphenes, nanosheets and nanowires. Photocurrents, elastic moduli, tensile strength etc. are determined as a function of nanostructure morphology and/or its defectiveness revealed by direct HRTEM imaging. Optoelectronic and CL parameters of nanostructures are analysed as a function of strains or existence of localized structural defects. The conclusions are supported by density functional theory (DFT) simulations. The performances of nanostructures as electrodes in lithium- and sodium-ion batteries are also thoroughly investigated via construction of prototype ion battery cells in HRTEM.2 The author is grateful to his numerous groups’ members and colleagues:  C. Zhang, O. Cretu, X. Zhou, M.Wang, P. Costa, Z. Xu, K. Firestein, D. Kvashnin, P. Sorokin, X. Wang, W. Wei, D. Tang, N. Kawamoto, Y. Kakefuda, M. Mitome, N. Fukata, T. Mori, Y. Bando, and J. Bell.

Figure 1: Setup for the transformation of a multi-walled carbon nanotube into the single-walled nanotube under Joule heating inside TEM followed by its mechanical testing.

References

1 Golberg D. et al. Advanced Materials 24, 117-194 (2012).

2 Zhang, C.; Golberg D. et al. Nano Lett. 16, 2054-2060 (2016).

 

Biographic Details

Dmitri Golberg

Title: Professor and Australian Laureate Fellow

Queensland University of Technology (QUT), Australia:

Phone: +61 7 3138 6601; E-mail: dmitry.golberg@qut.edu.au

Venue

Room: 
AEB Auditorium