Nanomaterial Property Studies in a Transmission Electron Microscope with Professor Dmitri Golberg
Professor Dmitri Golberg
Australian Laureate Fellow, Head of the Inorganic Nanomaterials Laboratory
School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty
Queensland University of Technology, presents:
Nanomaterial Property Studies in a Transmission Electron Microscope
Understanding mechanical, electrical, thermal, thermoelectric, optical, optoelectronic and photovoltaic properties of a material, in particular on the individual nanostructure level, is of key importance as far as its effective integration into modern technologies is concerned.
However, in the vast majority of cases, these property measurements have been conducted by means of instruments with no direct access to the nanomaterials’ atomic structure, its crystallography, spatially-resolved chemistry and existing defects. This fact largely limits the relevance of the collected data because all particular structural features of a nano-object prior, during and after its testing have typically been hidden. Therefore, the acquired results can hardly be linked to a particular material morphology, its atomic structure, and defect network. And a wide scatter of the reported data has commonly been observed between various samples and research groups. Till now this drawback has typically confused practical engineers and technologists and led to many uncertainties in regards to realistic nanomaterials’ applications and their industrial potentials.
In this talk I will demonstrate the full usefulness of diverse state-of-the-art in situ transmission electron microscopy (TEM) techniques for the property analyses of many advanced materials, e.g. individual inorganic nanotubes, graphene-like nanosheets, nanowires, nanoparticles and nanocomposites.
Elasticity, plasticity, fracture strength and toughness, electrical conductance, thermal gradients, photocurrents, photovoltages and spatially-resolved luminescence of a nanomaterial may now be unambiguously determined inside TEM, while employing piezo-driven probes, sensors and nanomanipulators and/or optical fibers inserted into the microscope column.
Contact email: dmitry.golberg@qut.edu.au
Acknowledgement
This work was supported by the Australian Research Council (ARC) in the frame of an Australian Laureate Fellowship Award FL160100089.
About the speaker: Dmitri Golberg is an Australian Laureate Fellow, Professor and a Head of “Inorganic Nanomaterials” Laboratory, Queensland University of Technology (QUT). His research is focused on the synthesis, structural analysis, and physical property measurements of diverse inorganic nanomaterials. With more than 700 published articles (21 highly cited papers), more than 44.000 citations and a Hirsh factor of 111, Dmitri is currently ranked within the top 300 most-cited world materials scientists.
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