Nanoscale strain engineering on the surface of a bulk TiO2 crystal.
basic_science · Level V
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- Record sourced from PubMed, PMID 25330276.
- Also identified by DOI 10.1021/nl5024194.
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Abstract
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.