One of the most powerful ways to study the Universe is to map where galaxies are located. Galaxies are not scattered randomly through space; they gather into groups, clusters, filaments and other structures that trace the underlying distribution of dark matter. The pattern of this cosmic web carries information about the basic ingredients and history […]
At the smallest scales, materials are never entirely still. Atoms in a crystal continuously vibrate around their resting positions, and some of these vibrations, called phonons, have well-defined energies that can interact with light. Normally, light and a material vibration can be treated as separate things. But when their interaction becomes strong enough, they can […]
Condensed matter • DIPC Advanced materials • Materials • Quantum physics
Nickel disulfide, NiS₂, is an unusual material. Its interior behaves as an electrical insulator, blocking the flow of current, while certain parts of its surface conduct electricity freely. This contradiction has puzzled physicists for decades, and a recent study offers a detailed explanation. The conduction, it turns out, is confined to tiny one-dimensional steps on […]
Arsenic contamination in drinking water poses a critical global public health hazard. Prolonged exposure to inorganic arsenic—predominantly present in groundwater as arsenate, where arsenic exists in its +5 oxidation state—can lead to severe dermatological lesions, cardiovascular diseases, and cancers. To mitigate these health risks, the World Health Organization has established a strict provisional safety guideline […]
One of the most striking discoveries in condensed matter physics over the past few years is that simply rotating one atomically thin crystal on top of an identical layer can create entirely new electronic behavior. This idea became famous in 2018, when physicists found that graphene sheets stacked at a very particular “magic angle” could […]
DIPC Computational and Theoretical Chemistry • DIPC Photochemistry
Turning low-energy light into higher-energy light seems to break the usual rules of physics, since energy is supposed to run downhill, not uphill. Yet a process called photon upconversion achieves exactly this, without breaking any laws of thermodynamics. Instead of absorbing one photon and releasing a single photon of lower energy, as most light-absorbing molecules […]
Building electronic devices often requires stacking different crystalline materials on top of one another with atomic precision. This process, called heteroepitaxy, works best when the two crystals share similar atomic patterns. When their symmetries differ, the upper crystal tends to grow in several orientations at once instead of a single one, creating defects that degrade […]
Biochemistry • Chemical engineering • Chemistry • DIPC Biochemistry • Food processing
Enzymes and other biomolecules are often anchored onto solid materials so they can be reused, purified more easily, and made more stable, a strategy biotechnology has relied on since industrial-scale immobilized enzymes first appeared in chemical manufacturing in the mid-twentieth century. Immobilized enzymes today drive processes from food and pharmaceutical production to biosensors and medical […]
One of the great unanswered questions in physics concerns the nature of neutrinos, the lightest known particles with mass. A process called neutrinoless double beta decay could provide the answer. In ordinary double beta decay, two neutrons inside a nucleus transform into two protons, emitting two electrons and two antineutrinos. In the neutrinoless version, only […]
When astronomers in the eighteenth century first turned powerful telescopes toward the Milky Way, they noticed something puzzling: tight, spherical swarms of stars scattered across the sky. Now we know that each contains hundreds of thousands of suns packed into a region just a few dozen light-years across. These objects, known today as globular clusters […]