Supercrystal: A Hidden Phase of Matter Created by a Burst of Light


A 3D image of a supercrystal from phase-field simulations using the software ?-PRO.
Credit: L-Q Chen Group, Penn State

“Frustration” plus a pulse of laser light resulted in a stable “supercrystal” created by a team of researchers led by Penn State and Argonne National Laboratory, together with University of California, Berkeley, and two other national laboratories.

This is one of the first examples of a new state of matter with long-term stability transfigured by the energy from a sub-pico-second laser pulse. The team’s goal, supported by the Department of Energy, is to discover interesting states of matter with unusual properties that do not exist in equilibrium in nature.

“We are looking for hidden states of matter by taking the matter out of its comfortable state, which w...

Read More

How Heavy Elements come about in the universe

For the first time, the fusion of hydrogen and xenon was able to be investigated at the same temperatures as occur in stellar explosions using an ion storage ring.
Credit: Mario Weigand

An experiment at GSI simulates how heavy elements capture protons. Heavy elements are produced during stellar explosion or on the surfaces of neutron stars through the capture of hydrogen nuclei (protons). This occurs at extremely high temperatures, but at relatively low energies. An international research team headed by Goethe University has now succeeded in investigating the capture of protons at the storage ring of the GSI Helmholtzzentrum für Schwerionenforschung.

As the scientists report in the current issue of Physical Review Letters, their goal was to determine more precisely the probability for...

Read More

More Vitamin D may improve Memory but too much may Slow Reaction Time

Vitamin D capsules.
Photo: Sue Shapses/Rutgers University-New Brunswick

Potential risks and benefits. A unique Rutgers-led study found that overweight and obese older women who took more than 3x the recommended daily dose of vitamin D showed improvements in memory and learning – but also had slower reaction times. The researchers hypothesize that slower reaction times may increase the risk of falling among older people.

The researchers, whose work is in the Journals of Gerontology: Series A, used computers to assess the impact of vitamin D on cognitive function. The researchers evaluated three groups of women between 50 and 70 years old in a randomized controlled trial.

One group took the recommended daily dose of 600 international units (IU), equivalent to 15 micrograms, of vitamin D ...

Read More

Solar-powered Moisture Harvester Collects and Cleans Water from Air

Fei Zhao (L), co author of the study, and Guihua Yu (R) of Yu Research Labs at UT Austin examining a sample of their newly-developed hydrogel.
Credit: Cockrell School of Engineering, The University of Texas at Austin

Access to clean water remains one of the biggest challenges facing humankind. A breakthrough by engineers at The University of Texas at Austin may offer a new solution through solar-powered technology that absorbs moisture from the air and returns it as clean, usable water.

The breakthrough, described in a recent issue of the journal Advanced Materials, could be used in disaster situations, water crises or poverty-stricken areas and developing countries...

Read More