News tagged with confinement
Diamond used to produce graphene quantum dots and nano-ribbons of controlled structure
Kansas State University researchers have come closer to solving an old challenge of producing graphene quantum dots of controlled shape and size at large densities, which could revolutionize electronics and optoelectronics.
May 17, 2012 |
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Transistor performance improves due to quantum confinement effects
(PhysOrg.com) -- Manufacturing on the nanoscale has come a long way since Feynman’s visions of nanotechnology more than 50 years ago. Since then, studies have demonstrated how low-dimensional structures, ...
Mar 21, 2011 |
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Study predicts nanoscience will greatly increase efficiency of next-generation solar cells
As the fastest growing energy technology in the world, solar energy continues to account for more and more of the world’s energy supply. Currently, most commercial photovoltaic power comes from bulk semiconductor materials. ...
Nanotechnology / Nanomaterials
Aug 13, 2010 |
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Confining light for use in nanophotonic devices
"There is a strong drive to make smaller and smaller devices," Hui Cao tells PhysOrg.com. "However, there are limitations to what we can do. We want faster devices than what we can get from electronics, so we are looking ...
Aug 15, 2010 |
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Laser sets records for neutron yield, laser energy
(PhysOrg.com) -- The National Nuclear Security Administration's National Ignition Facility (NIF) has set world records for neutron yield and laser energy delivered from laser-driven capsules to an inertial ...
Nov 08, 2010 |
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Researchers develop quantum membranes -- a new class of 2D semiconductor
(PhysOrg.com) -- A team of researchers working out of the University of California, Berkeley, has developed an entirely new class of two-dimensional semiconductor made of indium arsenide. Called quantum membranes, ...
Nanotechnology / Nanomaterials
Nov 14, 2011 |
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The noise about graphene
(PhysOrg.com) -- In last week’s announcement of the Nobel Prize in Physics, the Royal Swedish Academy of Sciences lauded graphene’s "exceptional properties that originate from the remarkable world ...
Nanotechnology / Nanomaterials
Oct 15, 2010 |
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High-performance plasmas may make reliable, efficient fusion power a reality
In the quest to produce nuclear fusion energy, researchers from the DIII-D National Fusion Facility have recently confirmed long-standing theoretical predictions that performance, efficiency and reliability ...
Nov 02, 2009 |
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World's largest fusion device goes back to work
September is commonly the month where things begin to gather pace again, and in the world of fusion energy research, things are no different. European scientists working on the Joint European Torus (JET), ...
Sep 05, 2011 |
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On-site rescue plan urged for confined spaces
Many employers are mistakenly relying upon public fire departments to rescue workers from confined spaces, such as water and sewer pipes, manholes and tunnels, according to an analysis by University of California, Berkeley, ...
Feb 14, 2012 |
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Scientists demonstrate effect of confining dielectrics on semiconductor nanowire conductivity
Researchers at the Harvard School of Engineering and Applied Sciences (SEAS), in collaboration with researchers from Worcester Polytechnic Institute (WPI), have demonstrated, for the first time, that the activation energy ...
May 05, 2009 |
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With lithium, more is definitely better
A team of scientists working at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL) has found that increasing the amount of lithium coating in the wall of an experimental fusion reactor ...
Nov 10, 2011 |
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Plasma power: Turning fusion into a renewable energy source
Fusion is best known for powering the sun and stars. But researchers have long been studying ways to transform that power source into future "green" energy that can be used on Earth. A team of researchers ...
Sep 14, 2009 |
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Upping the power triggers an ordered helical plasma
If you keep twisting a straight elastic string, at some moment it starts kinking in a wild way. Something similar occurs when one increases the electrical current flowing in a magnetized plasma doughnut: it ...
Nov 02, 2009 |
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