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Electron Beam Induced Growth of TiO2 Nanostructures



Renu Sharma


We report the evolution of TiO2 nanostructures when Au nanoparticles, supported on single crystal TiO2 substrates, were heated in ~2 Torr of flowing O2 in an environmental transmission electron microscope. Nanostructures with different morphologies were first observed around 500°C. Our measurements show that nanostructure growth is controlled by temperature, oxygen pressure, and the electron beam. We propose a reaction-controlled growth mechanism where mobile Ti atoms generated by the electron beam induced reduction of TiO2, are preferentially re-oxidized at the Au-TiO2 interface.
Microscopy and Microanalysis


Sharma, R. (2011), Electron Beam Induced Growth of TiO2 Nanostructures, Microscopy and Microanalysis, [online], (Accessed April 25, 2024)
Created February 1, 2011, Updated February 19, 2017