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Comparison of the top-down and bottom-up approach to fabricate nanowire-based Silicon/Germanium heterostructures
Abstract Silicon nanowires (NWs) and vertical nanowire-based Si/Ge heterostructures are expected to be building blocks for future devices, e.g. field-effect transistors or thermoelectric elements. InExpand
High-resolution investigations of ripple structures formed by femtosecond laser irradiation of silicon
Investigation of self-organized periodic microstructures (ripples) generated in Si(100) targets after multishot irradiation by approximately 100-fs to 800-nm laser pulses at intensities near the single shot ablation threshold reveals complex structural modifications upon interaction with the laser. Expand
Improving Accuracy and Precision of Strain Analysis by Energy-Filtered Nanobeam Electron Diffraction
It is demonstrated that zero-loss filtering significantly improves the NBED precision by decreasing the diffuse background in the diffraction patterns, which improves the total deviation by ∼50%. Expand
Recombination at Lomer Dislocations in Multicrystalline Silicon for Solar Cells
Lomer dislocations at small-angle grain boundaries in multicrystalline silicon solar cells have been identified as responsible for the dominating inherent dark current losses. Resulting efficiencyExpand
Scanning electron microscopic investigations of peculiarities of the BaTiO3 ferroelectric domain contrast
Possibilities and conditions for SEM observations on barium titanate domain structures are discussed. The optimum conditions to observe domains of the samples with no conducting layer are thoseExpand
Weyl Semimetals as Hydrogen Evolution Catalysts.
The study shows that the combination of robust topological surface states and large room temperature carrier mobility, both of which originate from bulk Dirac bands of the Weyl semimetal, is a recipe for high activity HER catalysts. Expand
Colossal injection of catalyst atoms into silicon nanowires
An atomic-level, quantitative study of the phenomenon of catalyst dissolution by three-dimensional atom-by-atom mapping of individual Al-catalysed Si nanowires using highly focused ultraviolet-laser-assisted atom-probe tomography. Expand
Structural and electronic properties of epitaxial multilayer h-BN on Ni(111) for spintronics applications
This work reports on the controlled growth of h-BN/Ni(111) by means of molecular beam epitaxy (MBE), and demonstrates that MBE is a promising, versatile alternative to both the exfoliation approach and chemical vapour deposition of h -BN. Expand
In situ elastic modulus measurements of ultrathin protein-rich organic layers in biosilica: towards deeper understanding of superior resistance to fracture of biocomposites
Biogenic ceramics are known to exhibit superior toughness due to a laminated architecture with ultrathin organic layers separating the ceramic blocks. Theoretical analyses relate the toughnessExpand
Nano-channels in the spider fang for the transport of Zn ions to cross-link His-rich proteins pre-deposited in the cuticle matrix.
Observations of nano-channels serving the Zn-transport within the His-rich protein matrix of the fibre reinforced spider fang may also support recent bio-inspired attempts to design artificial polymeric vascular materials for self-healing and in-situ curing. Expand