Author archives: DIPC

The magnetism of triangulene

The magnetism of triangulene

MaterialsNanotechnologyQuantum physics

By DIPC

Graphene is a diamagnetic material, this is, unable of becoming magnetic. However, a triangular piece of graphene is predicted to be magnetic. This apparent contradiction is a consequence of “magic” shapes in the structure of graphene flakes, which force electrons to “spin” more easily in one direction. Triangulene is a triangular graphene flake, which possesses […]

Second-harmonic generation in a quantum emitter – metallic nanoparticle hybrid

Second-harmonic generation in a quantum emitter – metallic nanoparticle hybrid

Condensed matterMaterialsNanotechnologyQuantum physicsTheoretical physics

By DIPC

When two photons with the same energy interact with a nonlinear material, they “combine” and generate a new photon with twice the energy of the initial photons. More precisely, two photons at the fundamental frequency are absorbed by a plasmonic structure to emit one photon at the second-harmonic frequency. This is called second-harmonic generation. Second-harmonic […]

Engineering hybrid graphene nanoribbons with active electronic properties

Engineering hybrid graphene nanoribbons with active electronic properties

Condensed matterMaterialsNanotechnology

By DIPC

Graphene nanoribbons (GNRs), are strips of graphene with ultra-thin width (<50 nm). Graphene ribbons, introduced as a theoretical model by Mitsutaka Fujita and coauthors to examine the edge and nanoscale size effect in graphene, have emerged as a promising material for nanoelectronics, as they combine many of the extraordinary properties of graphene with a high […]

On-demand spectral response of phonon polaritons in van der Waals materials

On-demand spectral response of phonon polaritons in van der Waals materials

Condensed matterMaterialsNanotechnology

By DIPC

In the quantum theory of many-body systems, collective oscillations are called collective excitations. In a quantum context, everything is quantized. Hence, collective excitations become quantized modes because of the cooperative motion of the whole system as a result of interactions between particles. They may be electronic excitations in atoms and are referred excitons. In most […]

A universal tool for the measurement of electron−phonon coupling in conducting low-dimensional systems

A universal tool for the measurement of electron−phonon coupling in conducting low-dimensional systems

Condensed matterMaterialsNanotechnology

By DIPC

Superconductivity is a physical phenomenon in which some materials exhibit zero electrical resistance when cooled down below a certain critical temperature. As surprising as it can be, the critical temperature of these materials can be modified by reducing the sample size to about a million times the size of the objects we are used to […]

Controlling single molecule conductance with a new class of covalent bond formation

Controlling single molecule conductance with a new class of covalent bond formation

ChemistryMaterialsNanotechnology

By DIPC

One of the greatest inventions of the 20th century, if not the greatest, was the transistor. It revolutionized the electronics industry and changed the way people around the world lived, learned, worked, and played. Its invention marked the beginning of solid state electronics which quickly reduced the size and power requirements of existing electronic tube […]

How chirality information can transfer over long distances

How chirality information can transfer over long distances

ChemistryCondensed matterMaterialsNanotechnologyQuantum physics

By DIPC

Usually, optical activity is understood as the ability some substances have to change the handedness of polarized light when it goes through them. Molecules that show optical activity have no plane of symmetry. The commonest case of this is in organic compounds in which a carbon atom is linked to four different groups. An atom […]

Metal atoms enhance quantum dot coupling in metal-organic nanoporous networks

Metal atoms enhance quantum dot coupling in metal-organic nanoporous networks

ChemistryCondensed matterMaterialsQuantum physics

By DIPC

A quantum dot (QD) is a nanometric crystalline structure of semiconductor materials. In a QD 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 shape of the quantum dot. This structure resembles that of atoms, that is why sometimes […]

Flavin bioorthogonal photocatalysis mechanism

Flavin bioorthogonal photocatalysis mechanism

Chemistry

By DIPC

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. Metal complexes are typically regarded as catalysts that convert organic substrates into more valuable compounds; however, to date, catalytic transformations […]