Category archives: Physics

Direct observation of dynamic tube dilation in entangled polymer blends

Direct observation of dynamic tube dilation in entangled polymer blends

ChemistryCondensed matterMaterialsPhysics

By DIPC

One of the unique features of the chemistry of carbon (and, to some extent, silicon) is its ability to form long chains of atoms. Polymers are substances that have macromolecules composed of many repeating units (known as ‘mers’). Many naturally occurring substances are polymers, including rubber and many substances based on glucose, such as the […]

The attosecond dynamics underlying the photoelectric effect

The attosecond dynamics underlying the photoelectric effect

Condensed matterDIPC Attosecond PhysicsMaterialsPhysics

By DIPC

In 1882, Heinrich Hertz devoted himself to the study of electromagnetism, including the recent and still generally unappreciated work of Maxwell. Two years later he began his famous series of experiments with electromagnetic waves. During the course of this work, Hertz discovered the photoelectric effect, which has had a profound influence on modern physics. The […]

Topology as a parameter: an artificial electronic high-order topological insulator

Topology as a parameter: an artificial electronic high-order topological insulator

MaterialsPhysics

By DIPC

Quantum simulators—systems that can be engineered and manipulated at will—are useful platforms for verifying model Hamiltonians and understanding more complex or elusive quantum systems. The ability to trap and control particles with the help of well-controlled electromagnetic fields has led to revolutionary advances in the fields of biology, condensed- matter physics, high-precision spectroscopy, and quantum […]

Computation can push optical microscopy towards unsuspected limits

Computation can push optical microscopy towards unsuspected limits

BiologyComputer sciencePhysics

By Daniel Moreno Andrés

Man does not live by hardware alone. Indeed, great material and conceptual improvements in the machinery of optical microscopes have occurred in recent decades. The examples are numerous (some example here; https://mappingignorance.org/2013/12/23/bessel-beam-plane-illumination-microscopy-another-smart-solution-for-an-old-challenge/). However, what is being achieved only with software and computing power seems a matter of magic. It is not only that programs and […]

First direct visualization by photoemision of how the Luttinger theorem works for Kondo lattices

First direct visualization by photoemision of how the Luttinger theorem works for Kondo lattices

Condensed matterMaterialsPhysics

By DIPC

Elements with 4f or 5f electrons in unfilled electron bands and their componuds , which have ions carrying magnetic moments but do not magnetically order, or only do so at very low temperatures, are generally known as heavy-fermion or heavy electron systems because the scattering of the conduction electrons with the magnetic ions results in […]

Finite size analogue of a heavy Fermi liquid in an atomic scale Kondo lattice

Finite size analogue of a heavy Fermi liquid in an atomic scale Kondo lattice

Condensed matterMaterialsPhysicsQuantum physics

By DIPC

The scattering of conduction electrons in metals owing to impurities with magnetic moments is known as the Kondo effect, after Jun Kondo, who analysed the phenomenon in 1964. This scattering increases the electrical resistance and has the consequence that, in contrast to ordinary metals, the resistance reaches a minimum as the temperature is lowered and […]