Semiconductors
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20 hours ago | News
An
important chemical species, molecular oxygen is linear, has an
anisotropic shape, and spins from two unpaired electrons. However, until
now, we didn’t know how these properties influenced important oxidation
reactions. Researchers in Japan have now reported development of the
world's first molecular oxygen beam that can designate the alignment of
the molecular axis and spin direction.
May 18 | News
The
first purely silicon oxide-based “resistive RAM” memory chip that can
operate in ambient conditions has been developed by researchers in the
U.K., and it needs just a thousandth of the energy of Flash-based chips.
Unlike other attempts to develop similar silicon-oxide chips, this
invention does not require a vacuum to operate.
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
In
a recent project that has challenged the notion that the best chip is
the most accurate one, a research team has unveiled this week its
prototype “inexact” computer chip. By allowing the chip to make a few
mistakes, developers were able to slash the power consumption of the
chip dramatically. The result is a chip at least 15 times more efficient
than today’s technology.
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 15 | News
Camera
maker Canon Inc. is moving toward fully automating digital camera
production in an effort to cut costs—a key change being played out
across Japan, a world leader in robotics. According to the company
spokesman, counting on machines can help preserve the country's
technological power.
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%.
