774 citations
- Helsinki Institute of PhysicsFI5 papers
- University of HelsinkiFI4 papers
- Institute for Scientific InterchangeIT3 papers
- Landau Institute for Theoretical PhysicsRU3 papers
- Australian Research CouncilAU2 papers
- Austrian Academy of SciencesAT2 papers
- Brera Astronomical ObservatoryIT2 papers
- Donostia International Physics CenterES2 papers
- Goddard Space Flight CenterUS2 papers
- Institute for Quantum Optics and Quantum Information InnsbruckAT2 papers
- King's College LondonGB2 papers
- Los Alamos National LaboratoryUS2 papers
6 papers · 1 filter
Stone-Wales--type transformations in carbon nanostructures driven by electron irradiation
J. Kotakoski, J. C. Meyer, S. Kurasch +3
Observations of topological defects associated with Stone-Wales-type transformations (i.e., bond rotations) in high resolution transmission electron microscopy (HRTEM) images of ca…
Cutting and controlled modification of graphene with ion beams
O. Lehtinen, J. Kotakoski, A. V. Krasheninnikov +1
Using atomistic computer simulations, we study how ion irradiation can be used to alter the morphology of a graphene monolayer by introducing defects of specific type, and to cut g…
From Point Defects in Graphene to Two-Dimensional Amorphous Carbon
J. Kotakoski, A. V. Krasheninnikov, U. Kaiser +1
While crystalline two-dimensional materials have become an experimental reality during the past few years, an amorphous 2-D material has not been reported before. Here, using elect…
Topographic and electronic contrast of the graphene moiré on Ir(111) probed by scanning tunneling microscopy and non-contact atomic force microscopy
Zhixiang Sun, Sampsa K. Hämäläinen, Jani Sainio +3
Epitaxial graphene grown on transition metal surfaces typically exhibits a moiré pattern due to the lattice mismatch between graphene and the underlying metal surface. We use both…
From Brittle to Ductile Fracture in Disordered Materials
Clara B. Picallo, Juan M. López, Stefano Zapperi +1
We introduce a lattice model able to describe damage and yielding in heterogeneous materials ranging from brittle to ductile ones. Ductile fracture surfaces, obtained when the syst…
Relaxation of creep strain in paper
M. Mustalahti, J. Rosti, J. Koivisto +1
In disordered, viscoelastic or viscoplastic materials a sample response exhibits a recovery phenomenon after the removal of a constant load or after creep. We study experimentally…