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10 papers · 1 filter
Low energy graphene edge termination via small diameter nanotube formation
Viktoria V. Ivanovskaya, Alberto Zobelli, Philipp Wagner +4
We demonstrate that free graphene sheet edges can curl back on themselves,reconstructing as nanotubes. This results in lower formation energies than any other non-functionalised ed…
Semi-classical dispersive estimates
Fernando Cardoso, Claudio Cuevas, Georgi Vodev
We prove dispersive estimates for the wave and Schrodinger groups associated to a second-order elliptic self-adjoint operator depending on a semi-classical parameter. Applications…
A study of the singularity locus in the joint space of planar parallel manipulators: special focus on cusps and nodes
Abdel Kader Zaiter, Philippe Wenger, Damien Chablat
Cusps and nodes on plane sections of the singularity locus in the joint space of parallel manipulators play an important role in nonsingular assembly-mode changing motions. This pa…
Can virtual reality predict body part discomfort and performance of people in realistic world for assembling tasks?
Bo Hu, Liang Ma, Wei Zhang +3
This paper presents our work on relationship of evaluation results between virtual environment (VE) and realistic environment (RE) for assembling tasks. Evaluation results consist…
Bromination of Graphene and Graphite
A. Yaya, C. P. Ewels, I. Suarez-Martinez +5
We present a density functional theory study of low density bromination of graphene and graphite, finding significantly different behaviour in these two materials. On graphene we f…
Behavior of hydrogen ions, atoms, and molecules in alpha-boron studied using density functional calculations
Philipp Wagner, Christopher P. Ewels, Irene Suarez-Martinez +4
We examine the behaviour of hydrogen ions, atoms and molecules in alpha-boron using density functional calculations. Hydrogen behaves as a negative-U centre, with positive H ions p…