Materials Testing
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18 hours ago | News
Using
forensic-style chemical analysis, scientists in the U.K. and Germany
have directly linked seismic observations of the deadly 1980 Mount St.
Helens eruption to crystal growth within the magma chamber, the large
underground pool of liquid rock beneath the volcano. Building direct
links between observations at the surface and processes occurring
underground has been an ongoing problem for volcanologists.
May 21 | News
A
year-long evaluation of the effect of quantum dots in primates has
found the nanoparticles to be safe, encouraging doctors and scientists
who are hoping to use them to battle diseases like cancer. Cadmium
selenide quantum dots were the variety used in the study.
May 18 | News
A
new study, using experimentation with a highly advanced spectrometer
for molecular rotational spectroscopy, has removed some of the mystery
about the elusive structure of water. For the first time, researchers
have a physical picture of what water molecules put together look like,
and it turns out they adopt three different geometries.
May 16 | News
An
international team of researchers has used SLAC’s Linac Coherent Light
Source (LCLS) to discover never-before-seen behavior by electrons in
complex materials known for their strongly correlated structures. The
unusual qualities of these materials, which include oxides such as
striped nickelate, stem from the collective behavior of their electrons.
May 11 | News
Drawing
on computational tools and scanning transmission electron microscopy, a
team of University of Wisconsin-Madison and Iowa State University
materials experts has examined metallic glasses at the
difficult-to-reach scale of just a few nanometers length. They have
discovered a new nanometer-scale atomic structure that could help
developers fine-tune structures.
May 8 | News
Pentamodes,
proposed in 1995 by Graeme Milton and Andrej Cherkaev, have until now
been purely theoretical. They exist when the mechanical behavior of
materials such as gold or water is expressed in terms of compression and
shear parameters. Materials experts in Germany have, for the first
time, built such a pentamode material, and it’s called a metafluid for a
specific reason.
May 3 | News
More
than 600,000 bridges in the U.S are 20 feet long or longer. Some are
over a century old and many of them national monuments. Three government
organizations, including the U.S. Army Corp of Engineers, have joined
forces to conduct a unique series of tests on bridge scheduled to be
demolished. From this, they hope to assess the vulnerability of critical
structural components of existing steel bridges.
May 1 | News
Frustrated
by the flimsy, disposable construction of typical trauma shears, Scott
Forman, an emergency room physician, teamed up with Sandia National
Laboratories engineer Mark Reece to design a better tool. The result is a
shear that handle tough materials like Kevlar without having to be
thrown away afterward. And it has a few other cool features as well.
May 1 | News
An
international team of researchers studying a superconducting strip have
observed an intermittent motion of magnetic flux which carries vortices
inside the regularly spaced weak conducting regions carved into the
superconducting material. These tiny interactions help govern the
electronic behavior of superconductors, offering potential applications
for voltage measurement techniques.
May 1 | News
Radio
signals reach pilots on board an aircraft through the radar dome, the
rounded nose of the aircraft. But if imperfections are introduced during
the production of this nose, it can impede radio traffic. Researchers
have developed a non-destructive testing system that will identify these
errors during production.
