Publications (20)
Picometer-precision few-tilt ptychotomography of 2D materials
Christoph Hofer, Kimmo Mustonen, Viera Skakalova +1
From ripples to defects, edges and grain boundaries, the 3D atomic structure of 2D materials is critical to their properties. However the damage inflicted by conventional 3D analys…
Interface effects on titanium growth on graphene
Georg Zagler, Alberto Trentino, Kimmo Mustonen +2
Poor quality interfaces between metal and graphene cause non-linearity and impair the carrier mobility in graphene devices. Here, we use aberration corrected scanning transmission…
Enhanced Tunnelling in a Hybrid of Single-Walled Carbon Nanotubes and Graphene
Yongping Liao, Kimmo Mustonen, Semir Tulic +9
Transparent and conductive films (TCFs) are of great technological importance. The high transmittance, electrical conductivity and mechanical strength make single-walled carbon nan…
Electron-Beam Manipulation of Silicon Impurities in Single-Walled Carbon Nanotubes
Kimmo Mustonen, Alexander Markevich, Mukesh Tripathi +7
The recent discovery that impurity atoms in crystals can be manipulated with focused electron irradiation has opened novel perspectives for top-down atomic engineering. These achie…
Buckyball sandwiches
Rasim Mirzayev, Kimmo Mustonen, Mohammad R. A. Monazam +6
Two-dimensional (2D) materials have considerably expanded the field of materials science in the last decade. Even more recently, various 2D materials have been assembled into verti…
Uncovering the ultimate performance of single-walled carbon nanotube films as transparent conductors
Kimmo Mustonen, Patrik Laiho, Antti Kaskela +3
The ultimate performance - ratio of electrical conductivity to optical absorbance - of single- walled carbon nanotube (SWCNTs) transparent conductive films (TCFs) is an issue of co…
Si Substitution in Nanotubes and Graphene via Intermittent Vacancies
Heena Inani, Kimmo Mustonen, Alexander Markevich +7
The properties of single-walled carbon nanotubes (SWCNTs) and graphene can be modified by the presence of covalently bound impurities. Although this can be achieved by introducing…
Graphene Lattices with Embedded Transition-Metal Atoms and Tunable Magnetic Anisotropy Energy: Implications for Spintronic Devices
Rostislav Langer, Kimmo Mustonen, Alexander Markevich +3
Doping of the graphene lattice with transition metal atoms resulting in high magnetic anisotropy energy (MAE) is an important goal of materials research owing to its potential appl…
Two-dimensional few-atom noble gas clusters in a graphene sandwich
Manuel Längle, Kenichiro Mizohata, Clemens Mangler +4
Van der Waals atomic solids of noble gases on metals at cryogenic temperatures were the first experimental examples of two-dimensional systems. Recently such structures have also b…
Cleaning graphene: comparing heat treatments in air and in vacuum
Mukesh Tripathi, Andreas Mittelberger, Kimmo Mustonen +4
Surface impurities and contamination often seriously degrade the properties of two-dimensional materials such as graphene. To remove contamination, thermal annealing is commonly us…
Towards Exotic Layered Materials: 2D Cuprous Iodide
Kimmo Mustonen, Christoph Hofer, Peter Kotrusz +10
Heterostructures composed of two-dimensional (2D) materials are already opening many new possibilities in such fields of technology as electronics and magnonics, but far more could…
Intrinsic core level photoemission of suspended graphene
Toma Susi, Mattia Scardamaglia, Kimmo Mustonen +11
X-ray photoelectron spectroscopy of graphene is important both for its characterization and as a model for other carbon materials. Despite great recent interest, the intrinsic phot…
Gas-phase synthesis of carbon nanotube-graphene heterostructures
Saeed Ahmad, Hua Jiang, Kimmo Mustonen +9
Graphene and carbon nanotubes (CNTs) share the same atomic structure of hexagonal carbon lattice. Yet, their synthesis differs in many aspects, including the shape and size of the…
Electron-irradiation effects on monolayer MoS2 at elevated temperatures
Carsten Speckmann, Kimmo Mustonen, Diana Propst +2
The effect of electron irradiation on 2D materials is an important topic, both for the correct interpretation of electron microscopy experiments and for possible applications in el…
Single indium atoms and few-atom indium clusters anchored onto graphene via silicon heteroatoms
Kenan Elibol, Clemens Mangler, David D. O'Regan +7
Single atoms and few-atom nanoclusters are of high interest in catalysis and plasmonics, but pathways for their fabrication and stable placement remain scarce. We report here the s…
Indirect measurement of the carbon adatom migration barrier on graphene
Andreas Postl, Pit Pascal Patrick Hilgert, Alexander Markevich +4
Although surface diffusion is critical for many physical and chemical processes, including the epitaxial growth of crystals and heterogeneous catalysis, it is particularly challeng…
Hexatic Phase in Covalent Two-Dimensional Silver Iodide
Thuy An Bui, David Lamprecht, Jacob Madsen +10
According to the Kosterlitz-Thouless-Halperin-Nelson-Young (KTHNY) theory, the transition from a solid to liquid in two dimensions proceeds through an orientationally ordered liqui…
Highly Efficient Bilateral Doping of Single-Walled Carbon Nanotubes
Anastasia E. Goldt, Orysia T. Zaremba, Mikhail O. Bulavskiy +10
A boost in the development of flexible and wearable electronics facilitates the design of new materials to be applied as transparent conducting films (TCFs). Although single-walled…
Gas phase synthesis of non-bundled, small diameter single-walled carbon nanotubes with near-armchair chiralities
Kimmo Mustonen, Patrik Laiho, Antti Kaskela +8
We present a novel floating catalyst synthesis route for individual, i.e. non-bundled, small diameter single-walled carbon nanotubes (SWCNTs) with a narrow chiral angle distributio…
Corrugation-dominated mechanical softening of defect-engineered graphene
Wael Joudi, Rika Saskia Windisch, Alberto Trentino +7
We measure the two-dimensional elastic modulus of atomically clean defect-engineered graphene with a known defect distribution and density in correlated ultra-high va…