30 citations · 117 across the 7 of their papers we have counts for
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Impurity invisibility in graphene: Symmetry guidelines for the design of efficient sensors
John Duffy, James A Lawlor, Caio Lewenkopf +1
Renowned for its sensitivity to detect the presence of numerous substances, graphene is an excellent chemical sensor. Unfortunately, which general features a dopant must have in or…
The influence of Gaussian strain on sublattice selectivity of impurities in graphene
James A Lawlor, Claudia G Rocha, Vanessa Torres +2
Among the different strategies used to induce the opening of a band gap in graphene, one common practice is through chemical doping. While a gap may me opened in this way, disorder…
Sublattice Segregation of Hydrogen Adsorbates in Carbon Nanotubes
James A. Lawlor, Mauro S. Ferreira
Recent experimental observations have reported that, rather than randomly distributed, nitrogen atoms may prefer to be located on one of the two sub-lattices of graphene. It has be…
Green Functions of Graphene: An Analytic Approach
James A. Lawlor, Mauro S. Ferreira
In this article we derive the lattice Green Functions (GFs) of graphene using a Tight Binding Hamiltonian incorporating both first and second nearest neighbour hoppings and allowin…
Sublattice asymmetry of impurity doping in graphene: A review
James A. Lawlor, Mauro S. Ferreira
In this review we highlight recent theoretical and experimental work on sublattice asymmetric doping of impurities in graphene, with a focus on substitutional Nitrogen dopants. It…
Sublattice imbalance of substitutionally doped nitrogen in graphene
James A. Lawlor, Paul D. Gorman, Stephen R. Power +2
Motivated by the recently observed sublattice asymmetry of substitutional nitrogen impurities in CVD grown graphene, we show, in a mathematically transparent manner, that oscillati…
Friedel Oscillations in Graphene: Sublattice Asymmetry in Doping
James A. Lawlor, Stephen R. Power, Mauro S. Ferreira
Symmetry breaking perturbations in an electronically conducting medium are known to produce Friedel oscillations (FOs) in various physical quantities of an otherwise pristine mater…