Author archives: DIPC

When Optics goes Atomic

When Optics goes Atomic

Condensed matter

By DIPC

An international team with the participation of the Center for Materials Physics in San Sebastián (CSIC-UPV/EHU) and Donostia International Physics Center (DIPC) have created the smallest lens in the world, capable to concentrate light down to dimensions of an atom. Researchers have used gold nanoparticles as focusing lenses that allow to flex individual chemical bonds […]

Growing chiral graphene nanoribbons

Growing chiral graphene nanoribbons

ChemistryCondensed matterMaterials

By DIPC

Graphene nanoribbons (GNRs), are strips of graphene with ultra-thin width (<50 nm). Graphene ribbons were introduced as a theoretical model by Mitsutaka Fujita and coauthors to examine the edge and nanoscale size effect in graphene. GNRs are very interesting structures, partly due to their attractive electronic properties. Those properties vary dramatically with changes in the […]

Graphene band gap engineering using boron

Graphene band gap engineering using boron

ChemistryCondensed matterMaterialsNanotechnology

By DIPC

Among the astonishing properties of graphene, a high mobility of the charge carriers has placed this material into the focus of intensive research efforts, aimed at developing high-speed graphene-based electronic devices. The first device of this family, a graphene field-effect transistor (GFET), still remains a promising candidate for applications in flexible electronic circuits. An essential […]

Permanent excimer-like colloidal superstructures as anticytotoxic agents

Permanent excimer-like colloidal superstructures as anticytotoxic agents

BiomedicineChemistryCondensed matterMaterials

By DIPC

A chemical compound or molecule consisting of two identical simpler molecules is a dimer. If one of the simpler molecules is excited while the other is in its ground, non-excited, state we talk about excimers. They are excited dimers which are non-bonding in the ground state. Thus, excimers can be considered evanescent quasi-particles that typically […]

How to push a single-molecule switch

How to push a single-molecule switch

Chemistry

By DIPC

Everybody knows the force that is required to activate a light switch on a wall – a finger is enough. But how much force do you need to apply if the device was dramatically reduced to the “nanoscale world”, that is, how much force do you need to operate a “single-molecule switch”? This fundamental question […]

An ideal candidate to investigate nanoscale ferromagnets and exotic interfaces

An ideal candidate to investigate nanoscale ferromagnets and exotic interfaces

ChemistryCondensed matterPhysicsQuantum physics

By DIPC

In order to study new solid state magnetic properties appropiate new laboratory models are needed. In particular, there is a necessity for a substrate to investigate new forms of magnetic coupling with nanoscale ferromagnets and the exotic physics at the interface with semiconductor or superconductor materials. Now a team of researchers from DIPC and some […]

Lasers

Lasers

Condensed matterQuantum physics

By DIPC

An atom in an excited state gives off energy by emitting a photon, a quantum of electromagnetic radiation, according to Bohr’s second postulate. Although Bohr’s specific model of the atom has been vastly extended and incorporated into models based on a different approach , this postulate is still valid. Atoms can acquire internal energy, that […]

Plasmonic resonances in an aluminium magic cluster

Plasmonic resonances in an aluminium magic cluster

Condensed matter

By DIPC

Al13 − is one of the most attractive of the so-called magic clusters. It has a perfect icosahedral symmetry with an aluminum atom at the center, a closed-shell electronic configuration (40 electrons), and a large highest occupied molecular orbital−lowest unoccupied molecular orbital (HOMO− LUMO) gap. These features result in an unusual stability and chemical inertness […]