Research News

Physicists' findings about helium could lead to more accurate temperature, pressure measurements

May 17, 2010 - In the May 7 edition of Physical Review Letters, a journal of the American Physical Society, an international team led by University of Delaware researchers reports new findings about helium that may lead to more accurate standards for how temperature and pressure are measured. In the article, highlighted as an “Editor's Suggestion” by the journal, the scientists provide a new theoretical computation of the force acting between a pair of helium atoms, referred to as “pair potential,” that is more accurate than any published to date.

Whole Earth Telescope watching 'dancing' stars

May 13, 2010 - After billions of years of twinkling and shining, some stars in the heavens appear to “dance” as they wind down. Maybe not like Elvis or Michael Jackson, but they definitely have a rhythmic beat, and some may even spin like a top.

For the next two weeks, the Whole Earth Telescope, an international network of cooperating astronomical observatories led by the University of Delaware, will be continuously monitoring three of these stars to try to figure out what's going on inside their luminous masses of cooling plasma.

Professor Hadjipanayis discusses the quest for new permanent-magnet materials in May 2010 issue of Physics Today

May 7, 2010 - A tightening supply of rare-earth elements such as neodymium, samarium, and dysprosium used in permanent magnets, catalysts, glass, polishing, and a broad range of other applications has caught the attention of policymakers in Washington, stimulated efforts to tap rare-earth deposits in North America and Australia, and spurred R&D on alternative materials.

Delaware recognized as one of the leading 'Centers for Supersolid' research in the world

April 27, 2010 - The upcoming international conference Supersolidity 2010 (which will take place at the Ecole Normale Supérieure, Paris, France in July 2010) will gather  the leading experimentalists and theorists around the world working on the puzzle of supersolid Helium. Among the invited speakers, University of Delaware has the largest representation with Prof. S.-T. Chui, Prof. H. Glyde and Prof. N. Mulders expected to review their latest results.

The race to create a new magnetic material

April 21, 2010 - A magnet at the heart of high-tech products such as cell phones and hybrid cars relies upon an increasingly scarce supply of the rare earth element known as neodymium. Now one of the original inventors of that magnet, Prof. George C. Hadjipanayis from the University of Delaware, hopes to create a new generation of magnetic materials that can ease or break free of that dependence. The neodymium-iron-boron magnet represents the most powerful commercial magnet available today, and has a starring role in many technologies crucial to the U.S. economy and defense.

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