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Article
Proton transport through one-atom-thick crystals
Measurements show that monolayers of graphene and hexagonal boron nitride are unexpectedly highly permeable to thermal protons and that their conductivity rapidly increases with temperature, but that no proton...
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Article
Singular phase nano-optics in plasmonic metamaterials for label-free single-molecule detection
A suitably engineered plasmonic metamaterial featuring topologically protected sharp phase variations close to a zero-reflection point of incident lightwaves has now been demonstrated. Exploiting the high sens...
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Article
Fine structure constant and quantized optical transparency of plasmonic nanoarrays
Optics is renowned for displaying quantum phenomena. Indeed, studies of emission and absorption lines, the photoelectric effect and blackbody radiation helped to build the foundations of quantum mechanics. Nev...
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Article
Detection of individual gas molecules adsorbed on graphene
The ultimate aim of any detection method is to achieve such a level of sensitivity that individual quanta of a measured entity can be resolved. In the case of chemical sensors, the quantum is one atom or molec...
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Article
Unconventional quantum Hall effect and Berry’s phase of 2π in bilayer graphene
There are two known distinct types of the integer quantum Hall effect. One is the conventional quantum Hall effect, characteristic of two-dimensional semiconductor systems1,2, and the other is its relativistic co...