News tagged with energy gap
Availability of hydrogen controls chemical structure of graphene oxide
A new study shows that the availability of hydrogen plays a significant role in determining the chemical and structural makeup of graphene oxide, a material that has potential uses in nano-electronics, nano-electromechanical ...
Nanotechnology / Nanomaterials
May 22, 2012 |
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Can graphene nanoribbons replace silicon?
(PhysOrg.com) -- "Graphene has been the subject of intense focus and research for a few years now," Philip Kim tells PhysOrg.com. "There are researchers that feel that it is possible that graphene could replac ...
Feb 18, 2010 |
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Bilayer graphene works as an insulator
A research team led by physicists at the University of California, Riverside has identified a property of "bilayer graphene" (BLG) that the researchers say is analogous to finding the Higgs boson in particle ...
Nanotechnology / Nanomaterials
Jan 24, 2012 |
4.5 / 5 (10) |
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Chemists propose explanation for superconductivity at high temperatures
(PhysOrg.com) -- It has been 25 years since scientists discovered the first high-temperature superconductors—copper oxides, or cuprates, that conduct electricity without a shred of resistance at temperatures ...
Dec 15, 2011 |
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New PV cell generates electricity from IR and UV light
(PhysOrg.com) -- A prototype of a new type of photovoltaic (PV) cell that generates electricity from visible, infrared and ultraviolet light has been demonstrated by a group of Japanese scientists. It could ...
Mar 24, 2010 |
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Controlling the interaction between light and matter
(PhysOrg.com) -- "One of the most exciting things about this is that it gives us nice, clean control over the interaction between light and matter," William Kelly tells PhysOrg.com. "Our technique has the potential to giv ...
Apr 30, 2010 |
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Study of electron orbits in multilayer graphene finds unexpected energy gaps
Researchers have taken one more step toward understanding the unique and often unexpected properties of graphene, a two-dimensional carbon material that has attracted interest because of its potential applications ...
Nanotechnology / Nanomaterials
Aug 10, 2010 |
4.7 / 5 (27) |
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ORNL finding has materials scientists entering new territory
Solar cells, light emitting diodes, displays and other electronic devices could get a bump in performance because of a discovery at the Department of Energy's Oak Ridge National Laboratory that establishes new boundaries ...
Feb 21, 2012 |
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Innovation is step toward digital graphene transistors
Researchers are making progress in creating digital transistors using a material called graphene, potentially sidestepping an obstacle thought to dramatically limit the material's use in computers and consumer ...
Sep 06, 2011 |
4.7 / 5 (6) |
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Fast Transistors Could Save Energy
(PhysOrg.com) -- Transistors, the cornerstone of electronics, are lossy and therefore consume energy. Swiss esearchers from the ETH Zurich and EPF Lausanne have developed transistors targeting high switching ...
Apr 20, 2010 |
4.4 / 5 (15) |
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New diffraction phenomenon observed and explained
'Sub-Bragg diffraction' is what researchers at the Complex Photonic Systems group of the University of Twente’s MESA+ Institute for Nanotechnology call their surprising observations. An ‘energy dip’ ...
Feb 28, 2012 |
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NREL Uncovers Clean Energy Leaders State by State
(PhysOrg.com) -- That California and Texas still lead the United States in generating renewable energy probably is no surprise. But, NREL's 2009 State of the States report shows that several smaller states ...
Technology / Energy & Green Tech
Nov 24, 2009 |
3.4 / 5 (5) |
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Samsung starts new chip line to boost flash memory
Samsung Electronics, the world's largest memory chip maker, said Thursday it has begun mass production at a new line to raise production of flash memory chips used in tablets and smartphones.
Sep 22, 2011 |
4.5 / 5 (2) |
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Researchers discover technique to improve solar cell technology
A multi-disciplinary team of scientists at the Naval Research Laboratory has discovered a way to tailor nanostructures that could result in low-cost, high efficiency solar cells. The research appears in the ...
Oct 12, 2011 |
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Highlight: Solar - Bridging the gap
(PhysOrg.com) -- Titanium dioxide, the same inexpensive white pigment that protects us from sunburns, can be converted into a material that absorbs sunlight and could greatly increase the efficiency of solar energy cells.
Dec 10, 2009 |
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