TY  - JOUR
AU  - Balog, Richard
AU  - Andersen, Mie
AU  - Jorgensen, Bjarke
AU  - Šljivančanin, Željko
AU  - Hammer, Bjork
AU  - Baraldi, Alessandro
AU  - Larciprete, Rosanna
AU  - Hofmann, Philip
AU  - Hornekaer, Liv
AU  - Lizzit, Silvano
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5531
AB  - Combined fast X-ray photoelectron spectroscopy and density functional theory calculations reveal the presence of two types of hydrogen adsorbate structures at the graphene/Ir(111) interface, namely, graphane-like islands and hydrogen dimer structures. While the former give rise to a periodic pattern, dimers tend to destroy the periodicity. Our data reveal distinctive growth rates and stability of both types of structures, thereby allowing one to obtain well-defined patterns of hydrogen clusters. The ability to control and manipulate the formation and size of hydrogen structures on graphene facilitates tailoring of its properties for a wide range of applications by means of covalent functionalization.
T2  - ACS Nano
T1  - Controlling Hydrogenation of Graphene on Ir(111)
VL  - 7
IS  - 5
SP  - 3823
EP  - 3832
DO  - 10.1021/nn400780x
ER  - 

@article{
author = "Balog, Richard and Andersen, Mie and Jorgensen, Bjarke and Šljivančanin, Željko and Hammer, Bjork and Baraldi, Alessandro and Larciprete, Rosanna and Hofmann, Philip and Hornekaer, Liv and Lizzit, Silvano",
year = "2013",
abstract = "Combined fast X-ray photoelectron spectroscopy and density functional theory calculations reveal the presence of two types of hydrogen adsorbate structures at the graphene/Ir(111) interface, namely, graphane-like islands and hydrogen dimer structures. While the former give rise to a periodic pattern, dimers tend to destroy the periodicity. Our data reveal distinctive growth rates and stability of both types of structures, thereby allowing one to obtain well-defined patterns of hydrogen clusters. The ability to control and manipulate the formation and size of hydrogen structures on graphene facilitates tailoring of its properties for a wide range of applications by means of covalent functionalization.",
journal = "ACS Nano",
title = "Controlling Hydrogenation of Graphene on Ir(111)",
volume = "7",
number = "5",
pages = "3823-3832",
doi = "10.1021/nn400780x"
}

Balog, R., Andersen, M., Jorgensen, B., Šljivančanin, Ž., Hammer, B., Baraldi, A., Larciprete, R., Hofmann, P., Hornekaer, L.,& Lizzit, S.. (2013). Controlling Hydrogenation of Graphene on Ir(111). in ACS Nano, 7(5), 3823-3832.
https://doi.org/10.1021/nn400780x

Balog R, Andersen M, Jorgensen B, Šljivančanin Ž, Hammer B, Baraldi A, Larciprete R, Hofmann P, Hornekaer L, Lizzit S. Controlling Hydrogenation of Graphene on Ir(111). in ACS Nano. 2013;7(5):3823-3832.
doi:10.1021/nn400780x .

Balog, Richard, Andersen, Mie, Jorgensen, Bjarke, Šljivančanin, Željko, Hammer, Bjork, Baraldi, Alessandro, Larciprete, Rosanna, Hofmann, Philip, Hornekaer, Liv, Lizzit, Silvano, "Controlling Hydrogenation of Graphene on Ir(111)" in ACS Nano, 7, no. 5 (2013):3823-3832,
https://doi.org/10.1021/nn400780x . .

TY  - JOUR
AU  - Nilsson, Louis
AU  - Šljivančanin, Željko
AU  - Balog, Richard
AU  - Xu, Wei
AU  - Linderoth, Trolle R.
AU  - Laegsgaard, Erik
AU  - Stensgaard, Ivan
AU  - Hammer, Bjork
AU  - Besenbacher, Flemming
AU  - Hornekaer, Liu
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4752
AB  - Combined scanning tunnelling microscopy measurements and density functional theory calculations reveal a method to induce linear structures of hydrogen adsorbates on graphite by covering the surface with a self-assembled molecular monolayer of cyanuric acid and exposing it to atomic hydrogen. The method can in principle be applied to obtain nanopattemed hydrogen structures on free standing graphene and graphene laid down on insulating substrates, hereby opening up for the possibility of substrate independent bandgap engineering of graphene. (C) 2012 Elsevier Ltd. All rights reserved.
T2  - Carbon
T1  - Linear hydrogen adsorbate structures on graphite induced by self-assembled molecular monolayers
VL  - 50
IS  - 5
SP  - 2052
EP  - 2056
DO  - 10.1016/j.carbon.2011.12.050
ER  - 

@article{
author = "Nilsson, Louis and Šljivančanin, Željko and Balog, Richard and Xu, Wei and Linderoth, Trolle R. and Laegsgaard, Erik and Stensgaard, Ivan and Hammer, Bjork and Besenbacher, Flemming and Hornekaer, Liu",
year = "2012",
abstract = "Combined scanning tunnelling microscopy measurements and density functional theory calculations reveal a method to induce linear structures of hydrogen adsorbates on graphite by covering the surface with a self-assembled molecular monolayer of cyanuric acid and exposing it to atomic hydrogen. The method can in principle be applied to obtain nanopattemed hydrogen structures on free standing graphene and graphene laid down on insulating substrates, hereby opening up for the possibility of substrate independent bandgap engineering of graphene. (C) 2012 Elsevier Ltd. All rights reserved.",
journal = "Carbon",
title = "Linear hydrogen adsorbate structures on graphite induced by self-assembled molecular monolayers",
volume = "50",
number = "5",
pages = "2052-2056",
doi = "10.1016/j.carbon.2011.12.050"
}

Nilsson, L., Šljivančanin, Ž., Balog, R., Xu, W., Linderoth, T. R., Laegsgaard, E., Stensgaard, I., Hammer, B., Besenbacher, F.,& Hornekaer, L.. (2012). Linear hydrogen adsorbate structures on graphite induced by self-assembled molecular monolayers. in Carbon, 50(5), 2052-2056.
https://doi.org/10.1016/j.carbon.2011.12.050

Nilsson L, Šljivančanin Ž, Balog R, Xu W, Linderoth TR, Laegsgaard E, Stensgaard I, Hammer B, Besenbacher F, Hornekaer L. Linear hydrogen adsorbate structures on graphite induced by self-assembled molecular monolayers. in Carbon. 2012;50(5):2052-2056.
doi:10.1016/j.carbon.2011.12.050 .

Nilsson, Louis, Šljivančanin, Željko, Balog, Richard, Xu, Wei, Linderoth, Trolle R., Laegsgaard, Erik, Stensgaard, Ivan, Hammer, Bjork, Besenbacher, Flemming, Hornekaer, Liu, "Linear hydrogen adsorbate structures on graphite induced by self-assembled molecular monolayers" in Carbon, 50, no. 5 (2012):2052-2056,
https://doi.org/10.1016/j.carbon.2011.12.050 . .

TY  - JOUR
AU  - Šljivančanin, Željko
AU  - Balog, Richard
AU  - Hornekaer, Liv
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4917
AB  - Applying density functional theory we studied magnetism in partially hydrogenated graphene. We demonstrated that the difference in the number of H atoms adsorbed on two graphene sublattices eta can be used as a parameter to predict stability of hydrogen structures on graphene. All favorable structures with even number of H atoms are non-magnetic, with eta equal to zero. Favorable structures with odd number of H adsorbates have eta equal to one, giving rise to a total magnetic moment of 1 mu(B). Structures with higher eta, including recently proposed graphone, are thermodynamically unfavorable and kinetically unstable at room temperature. (C) 2012 Elsevier B. V. All rights reserved.
T2  - Chemical Physics Letters
T1  - Magnetism in graphene induced by hydrogen adsorbates
VL  - 541
SP  - 70
EP  - 74
DO  - 10.1016/j.cplett.2012.05.043
ER  - 

@article{
author = "Šljivančanin, Željko and Balog, Richard and Hornekaer, Liv",
year = "2012",
abstract = "Applying density functional theory we studied magnetism in partially hydrogenated graphene. We demonstrated that the difference in the number of H atoms adsorbed on two graphene sublattices eta can be used as a parameter to predict stability of hydrogen structures on graphene. All favorable structures with even number of H atoms are non-magnetic, with eta equal to zero. Favorable structures with odd number of H adsorbates have eta equal to one, giving rise to a total magnetic moment of 1 mu(B). Structures with higher eta, including recently proposed graphone, are thermodynamically unfavorable and kinetically unstable at room temperature. (C) 2012 Elsevier B. V. All rights reserved.",
journal = "Chemical Physics Letters",
title = "Magnetism in graphene induced by hydrogen adsorbates",
volume = "541",
pages = "70-74",
doi = "10.1016/j.cplett.2012.05.043"
}

Šljivančanin, Ž., Balog, R.,& Hornekaer, L.. (2012). Magnetism in graphene induced by hydrogen adsorbates. in Chemical Physics Letters, 541, 70-74.
https://doi.org/10.1016/j.cplett.2012.05.043

Šljivančanin Ž, Balog R, Hornekaer L. Magnetism in graphene induced by hydrogen adsorbates. in Chemical Physics Letters. 2012;541:70-74.
doi:10.1016/j.cplett.2012.05.043 .

Šljivančanin, Željko, Balog, Richard, Hornekaer, Liv, "Magnetism in graphene induced by hydrogen adsorbates" in Chemical Physics Letters, 541 (2012):70-74,
https://doi.org/10.1016/j.cplett.2012.05.043 . .

TY  - JOUR
AU  - Balog, Richard
AU  - Jorgensen, Bjarke
AU  - Nilsson, Louis
AU  - Andersen, Mie
AU  - Rienks, Emile
AU  - Bianchi, Marco
AU  - Fanetti, Mattia
AU  - Laegsgaard, Erik
AU  - Baraldi, Alessandro
AU  - Lizzit, Silvano
AU  - Šljivančanin, Željko
AU  - Besenbacher, Flemming
AU  - Hammer, Bjork
AU  - Pedersen, Thomas G.
AU  - Hofmann, Philip
AU  - Hornekaer, Liv
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3937
AB  - Graphene, a single layer of graphite, has recently attracted considerable attention owing to its remarkable electronic and structural properties and its possible applications in many emerging areas such as graphene-based electronic devices(1). The charge carriers in graphene behave like massless Dirac fermions, and graphene shows ballistic charge transport, turning it into an ideal material for circuit fabrication(2,3). However, graphene lacks a bandgap around the Fermi level, which is the defining concept for semiconductor materials and essential for controlling the conductivity by electronic means. Theory predicts that a tunable bandgap may be engineered by periodic modulations of the graphene lattice(4-6), but experimental evidence for this is so far lacking. Here, we demonstrate the existence of a bandgap opening in graphene, induced by the patterned adsorption of atomic hydrogen onto the Moire superlattice positions of graphene grown on an Ir(111) substrate.
T2  - Nature Materials
T1  - Bandgap opening in graphene induced by patterned hydrogen adsorption
VL  - 9
IS  - 4
SP  - 315
EP  - 319
DO  - 10.1038/NMAT2710
ER  - 

@article{
author = "Balog, Richard and Jorgensen, Bjarke and Nilsson, Louis and Andersen, Mie and Rienks, Emile and Bianchi, Marco and Fanetti, Mattia and Laegsgaard, Erik and Baraldi, Alessandro and Lizzit, Silvano and Šljivančanin, Željko and Besenbacher, Flemming and Hammer, Bjork and Pedersen, Thomas G. and Hofmann, Philip and Hornekaer, Liv",
year = "2010",
abstract = "Graphene, a single layer of graphite, has recently attracted considerable attention owing to its remarkable electronic and structural properties and its possible applications in many emerging areas such as graphene-based electronic devices(1). The charge carriers in graphene behave like massless Dirac fermions, and graphene shows ballistic charge transport, turning it into an ideal material for circuit fabrication(2,3). However, graphene lacks a bandgap around the Fermi level, which is the defining concept for semiconductor materials and essential for controlling the conductivity by electronic means. Theory predicts that a tunable bandgap may be engineered by periodic modulations of the graphene lattice(4-6), but experimental evidence for this is so far lacking. Here, we demonstrate the existence of a bandgap opening in graphene, induced by the patterned adsorption of atomic hydrogen onto the Moire superlattice positions of graphene grown on an Ir(111) substrate.",
journal = "Nature Materials",
title = "Bandgap opening in graphene induced by patterned hydrogen adsorption",
volume = "9",
number = "4",
pages = "315-319",
doi = "10.1038/NMAT2710"
}

Balog, R., Jorgensen, B., Nilsson, L., Andersen, M., Rienks, E., Bianchi, M., Fanetti, M., Laegsgaard, E., Baraldi, A., Lizzit, S., Šljivančanin, Ž., Besenbacher, F., Hammer, B., Pedersen, T. G., Hofmann, P.,& Hornekaer, L.. (2010). Bandgap opening in graphene induced by patterned hydrogen adsorption. in Nature Materials, 9(4), 315-319.
https://doi.org/10.1038/NMAT2710

Balog R, Jorgensen B, Nilsson L, Andersen M, Rienks E, Bianchi M, Fanetti M, Laegsgaard E, Baraldi A, Lizzit S, Šljivančanin Ž, Besenbacher F, Hammer B, Pedersen TG, Hofmann P, Hornekaer L. Bandgap opening in graphene induced by patterned hydrogen adsorption. in Nature Materials. 2010;9(4):315-319.
doi:10.1038/NMAT2710 .

Balog, Richard, Jorgensen, Bjarke, Nilsson, Louis, Andersen, Mie, Rienks, Emile, Bianchi, Marco, Fanetti, Mattia, Laegsgaard, Erik, Baraldi, Alessandro, Lizzit, Silvano, Šljivančanin, Željko, Besenbacher, Flemming, Hammer, Bjork, Pedersen, Thomas G., Hofmann, Philip, Hornekaer, Liv, "Bandgap opening in graphene induced by patterned hydrogen adsorption" in Nature Materials, 9, no. 4 (2010):315-319,
https://doi.org/10.1038/NMAT2710 . .