Author archives: DIPC

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 […]

Quantum disbelievers

Quantum disbelievers

Condensed matterHistoryQuantum physics

By DIPC

The idea that the solution of Schrödinger’s equation is a wave that represents, not a physical wave, but the probability of finding the associated particle in some specific condition of motion has had great success. In fact, every experiment devised so far to test this interpretation has confirmed these results. Yet many scientists still find […]

The uncertainty principle, under a new light

The uncertainty principle, under a new light

Quantum physics

By DIPC

In ordinary life it is assumed that any physical property of an object can be measured as accurately as necessary. To reach any desired degree of accuracy would require only a sufficiently precise instrument. Wave mechanics showed, however, that even in thought experiments with ideal instruments there are limits to the accuracy of measurements that […]

How the physical model of atoms was lost

How the physical model of atoms was lost

Condensed matterHistoryQuantum physics

By DIPC

By the mid-1920s it was clear that “things” (electrons, atoms, molecules) long regarded as particles also show wave properties. This fact is the basis for the currently accepted theory of atomic structure. This theory, quantum mechanics, was introduced in 1925. Its foundations were developed very rapidly during the next few years, primarily by Born, Heisenberg […]