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Nanoscale strain engineering on the surface of a bulk TiO2 crystal. | LitMetric
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Nanoscale strain engineering on the surface of a bulk TiO2 crystal.

Denis V Potapenko Zhisheng Li Jeffery W Kysar Richard M Osgood

Nano Lett

Laboratories for Light-Surface Interactions, Department of Applied Physics and Applied Mathematics and ‡Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States.

Published: November 2014

Arrays of highly strained 5-25 nm-wide regions have been prepared on rutile TiO2(110) surface through a low energy Ar ion bombardment technique. Using scanning tunneling microscopy (STM) and an innovative STM tip-triggered nanoexplosion approach we show experimentally that the protrusions arise from subsurface Ar-filled pockets. Continuum mechanics modeling gives good estimates of the corresponding elastic deformation. Surface strain values of up to 4% have been deduced.

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 Source
http://dx.doi.org/10.1021/nl5024194DOI Listing

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