75 research outputs found
Accurate argon cluster-ion sputter yields: Measured yields and effect of the sputter threshold in practical depth-profiling by x-ray photoelectron spectroscopy and secondary ion mass spectrometry
Reactive intercalation and oxidation at the buried graphene-germanium interface
We explore a number of different electrochemical, wet chemical, and gas phase approaches to study intercalation and oxidation at the buried graphene-Ge interface. While the previous literature focused on the passivation of the Ge surface by chemical vapor deposited graphene, we show that particularly via electrochemical intercalation in a 0.25 N solution of anhydrous sodium acetate in glacial acetic acid, this passivation can be overcome to grow GeO2 under graphene. Angle resolved photoemission spectroscopy, Raman spectroscopy, He ion microscopy, and time-of-flight secondary ion mass spectrometry show that the monolayer graphene remains undamaged and its intrinsic strain is released by the interface oxidation. Graphene acts as a protection layer for the as-grown Ge oxide, and we discuss how these insights can be utilized for new processing approaches.We acknowledge financial support from the EPSRC (EP/K016636/1, EP/P51021X/1) and the Future Photonics Hub - Innovation Partnership Fund (EPSRC EP/L00044X/1). P.B.W. acknowledges EPSRC Cambridge NanoDTC EP/G037221/1. R.S.W. acknowledges funding from the European Union’s Horizon 2020 research and innovation programme through a EU Marie Skłodowska-Curie Individual Fellowship (Global) under grant ARTIST (no. 656870). R.W. acknowledges EPSRC Doctoral Training Award (EP/M506485/1)
A simple polyol-free synthesis route to Gd2O3 nanoparticles for MRI applications: an experimental and theoretical study
Depth profiling organic/inorganic interfaces by argon gas cluster ion beams: sputter yield data for biomaterials, <em>in-vitro</em> diagnostic and implant applications
Intensity calibration and sensitivity factors for XPS instruments with monochromatic Ag Lα and Al Kα sources
Recent Developments in the Study of the Surface-Stability of Platinum and Platinum-Iridium Mass Standards
Estimation of inelastic mean free paths for polymers and other organic materials - use of quantitative structure-property relationships
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