Atom probe tomography assessment of the impact of electron beam exposure on InxGa1-xN/GaN quantum wells
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This study addresses the ongoing debate concerning the distribution of indium in InxGa1−xN quantum wells(QWs) using a combination of atom probe tomography (APT) and transmission electron microscopy(TEM). APT analysis of InxGa1−xN QWs, which had been exposed to the electron beam in a TEM, revealed an inhomogeneous indium distribution which was not observed in a control sample which had not been exposed to the electron beam. These data validate the effectiveness of APT in detecting subtle compositional inhomogeneities in the nitrides.
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Rationale, design and methods for a randomised and controlled trial to investigate whether home access to electronic games decreases children's physical activityStraker, Leon; Abbott, R.; Piek, Jan; Pollock, Clare; Davies, P.; Smith, Anne (2009)Background: Many children are reported to have insufficient physical activity (PA) placing them at greater risk of poor health outcomes. Participating in sedentary activities such as playing electronic games is widely ...
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