Category Archives: Materials
A photonic crystal the size of a single free space wavelength
You can read this article because I have used photonics in order to make it possible. It may sound futuristic, but photonics is a technology we use, one way or the other, on a daily basis. Photonic devices are analogous […]
Detection of the reversal of magnetic moments in an antiferromagnet
Some metals, alloys and transition-element salts exhibit a form of magnetism called antiferromagnetism. This occurs below a certain temperature, named after Louis Néel, when an ordered array of atomic magnetic moments spontaneously forms in which alternate moments have opposite directions. […]
Polariton anomalous Hall effect in transition-metal dichalcogenides
Two-dimensional materials, such as transition-metal dichalcogenides embedded in optical cavities, stand out as an excellent platform where strong light-matter interactions can be studied. Moreover, their band structures bring about nontrivial topological features, including the possibility of inducing some really […]
Catalysis depends on the crystallographic plane of the catalyst
A catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. As the catalyst itself takes part in the reaction it may undergo a physical change. Hence, if catalysts take […]
Self-knotting bionic proteins
Author: Ivan Coluzza is an Ikerbasque Research Professor at CICbiomaGUNE
Some heteropolymers can be designed to spontaneously self-assemble in complex pre-determined knotted structures. In the past, we referred to such designable heteropolymers as “bionic proteins”. Here we present an extensive […]
Origin of the mysterious blue fluorescence of polymer carbon dots
A quantum dot is a nanometric crystalline structure of semiconductor materials. In a quatum dot electrons are confined in a region of space, thus creating a well defined structure of energy levels that depends very much on the size and […]
Catechol derivatives from “ideal lignin”
In the transition from a petrol-based society to a one based on bio-renewable resources, the replacement of aromatic chemicals is one of the most challenging issues. Nowadays, around 40% of the bulk chemicals belong to the aromatic category, and a […]
Nonequilibrium effects in hybrids of electron systems with spontaneously broken symmetries
Imagine a military regiment in formation. That we will call symmetry. Now imagine the same regiment when it is dismissed by the commanding officer: at once the soldiers disperse and tend to form domains (groups) or pairs. Hence, we can […]
Unlocking graphene’s spintronic potential through spin-valley coupling
Author: José H. García is a postdoctoral researcher at the Catalan Institute of Nanoscience and Nanotechnology (ICN2).
Few materials have drawn as much attention as graphene, it fascinating attributes such as one-atom thickness and relativistic electrons, and its technological properties […]
Avoiding geological timescales to access low energies in bulk glasses
Common glass, used in windows or bottles, for example, is made by heating a mixture of calcium oxide (lime), sodium carbonate (soda), and silicon (IV) oxide (sand), resulting in a calcium silicate. This silicate is not a crystal but a […]