Semiconductors
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May 21 | News
A materials scientist at Michigan
Technological University
has discovered a chemical reaction that not only eats up the greenhouse
gas
carbon dioxide, it also creates something useful. And, by the way, it
releases
energy.
May 18 | News
With
the advent of the solid-state transistor and semi-conductor-based flat
panel display technology, the vacuum tube has virtually disappeared from
consumer electronics. But a team of researchers in Korea and at NASA’s
Ames Research Center have combined the best traits of both technologies
to create a vacuum channel transistor just 150 nm long.
May 17 | News
A
year after a researcher at Linköping University in Sweden built a fully
functional field-effect transistor from plastic, another scientist at
the same institution has shown that it is possible to control these
transistors with great precision, allowing the device to function as a
logic circuit.
May 14 | News
There's
nothing worse than a shonky pool table with an unseen groove or bump
that sends your shot off course. A new study has found that the same
goes at the nano-scale, where the "billiard balls" are tiny electrons
moving across a "table" made of the semiconductor gallium arsenide.
May 10 | News
After
studies involving advanced simulations of nanoscale magnetic and
materials phenomena, a team of scientists in Germany have proposed
making use of magnetic moments in chains of iron atoms to allow
information to be transported on the nanoscale in a fast and
energy-efficient manner. The scheme, demonstrated in experiments, would
work over a wide temperature range, remaining largely unaffected by
external magnetic fields.
May 9 | News
Gallium
nitride, a semiconductor material found in bright lights since the
1990s, is used in wireless applications because of its high efficiency
and high voltage operation. However, it’s difficult to remove heat from
GaN electronics, which limits applications and markets. Researchers at
the University of California, Riverside, have made a material from
graphene that does the job, and it looks a lot like a patterned quilt.
May 9 | News
White-light
quantum dots made from cadmium selenide can convert blue light produced
by a light-emitting diode into a warm white light similar to that
generated by an incandescent bulb. But their performance has been poor
until recent development breakthroughs have improved efficiency from
just 3% originally to as high as 45%.
May 3 | News
By
using diamond-tipped tools to apply pressure, a team led by Johns
Hopkins engineers has discovered some previously unknown electrical
properties of a common memory material, a mix of germanium, antimony,
and tellurium called GST. The discovery should make GST more useful for
electronics developers by allowing memory formats that retain data more
quickly, last longer, and allow far more capacity.
May 2 | News
University of California, Los Angeles researchers and their colleagues have developed a novel screening technology that allows large batches of metal-oxide nanomaterials to be assessed quickly, based on their ability to trigger certain biological responses in cells as a result of their semiconductor properties.
May 2 | News
Scientists
from Imperial College London have collaborated with colleagues at King
Abdullah University of Science and Technology in Saudi Arabia to produce
organic thin-film transistors that consistently achieve record-breaking
carrier mobility through careful solution-processing of a blend of two
organic semiconductors.
