Physics

The challenge: Make and purify a medical isotope that must be used the same day

Two radioactive isotopes of the metallic element scandium, or Sc, appear to be ideal for visualizing, and then destroying, solid tumors. A barrier, however, blocks their use—the inability to rapidly produce and purify the isotopes in useful amounts.

Electrons in high temperature superconductors may not obey the normal rules of pairing

Physicists used to think that superconductivity -- electricity flowing without resistance or loss -- was an all or nothing phenomenon. But new evidence suggests that, at least in copper oxide superconductors, it's not so clear cut. Researchers observed electrons in these materials traveling in coherent pairs, a hallmark of superconductivity, at much higher temperatures than those at which the material superconducts. The observation constrains condensed matter theory, and may give clues to practical high-temperature conductors.

Studying quantum phenomena in magnetic systems to understand exotic states of matter

Scientists unify condensed matter physics and quantum physics by experimentally characterizing magnetism-related quantum phenomena in Ba2CoSi2O6Cl2.

New way to make micro-sensors may revolutionize future of electronics

Researchers at Binghamton University, State University of New York researchers have found a way to improve the performance of tiny sensors that could have wide-reaching implications for electronic devices we use every day.

Scientists develop a metamaterial for applications in magnonics, an alternative to conventional electronics

Physicists from Russia and Europe have demonstrated the real possibility of using superconductor/ferromagnet systems to create magnonic crystals, which will be at the core of spin-wave devices to come in the post-silicon era of electronics. The paper was published in the journal Advanced Science.

A heavyweight candidate for dark matter

Almost a quarter of the universe stands literally in the shadows. According to cosmologists' theories, 25.8% of it is made up of dark matter, whose presence is signaled essentially only by its gravitational pull. What this substance consists of remains a mystery. Hermann Nicolai, Director at the Max Planck Institute for Gravitational Physics in Potsdam, and his colleague Krzysztof Meissner from the University of Warsaw have now proposed a new candidate—a superheavy gravitino.

A 127-year-old physics riddle solved

He solved a 127-year-old physics problem on paper and proved that off-centered boat wakes could exist. Five years later, practical experiments proved him right.

Physicists use light flashes to discover, control new quantum states of matter

Scientists are developing new tools and techniques to access new states of matter hidden within superconducting and other complex materials. Harnessing these exotic states and their unique properties could lead to better computing, communicating and data storing technologies.

Robust molecular propeller for unidirectional rotations created

A team of scientists has developed a molecular propeller that enables unidirectional rotations on a material surface when energized.

Scientists discover star dust in Antarctic snow

A team of scientists hauled 500 kilograms of fresh snow back from Antarctica, melted it, and sifted through the particles that remained. Their analysis yielded a surprise: The snow held significant amounts of a form of iron that isn't naturally produced on Earth.

Pages

Subscribe to Mr. Loyacano RSS