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Self-validating thermocouples based on metal-carbon eutectic fixed points
Oct 02, 2009 |
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When used at high temperatures (above 1100 °C) thermocouples are prone to substantial calibration drift. To gauge the extent of the drift, for example, in an industrial setting, it is highly desirable for ...
Bright idea illuminates LED standards
Nov 25, 2008 |
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The lack of common measurement methods among light-emitting diode (LED) and lighting manufacturers has affected the commercialization of solid-state lighting products. In a recent paper, researchers at the National Institute ...
Panasonic Develops A Gallium Nitride (GaN) Power Device with A New Junction Structure
Dec 17, 2008 |
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Panasonic today announced the development of a Gallium Nitride (GaN) -based diode with a new junction structure called "Natural Super Junction". The new GaN diode with low operating loss is applicable to a ...
NREL Solar Cell Sets World Efficiency Record at 40.8 Percent
Aug 13, 2008 |
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(PhysOrg.com) -- Scientists at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) have set a world record in solar cell efficiency with a photovoltaic device that converts 40.8 percent of the light ...
IMEC obtains record conversion efficiency of 24.7% for GaAs solar cells on Ge substrate
Feb 25, 2008 |
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IMEC has realized a single-junction GaAs solar cell on a Ge substrate with a record conversion efficiency of 24.7%. The efficiency was measured and confirmed by NREL (National Renewable Energy Laboratory, ...
X marks the spot: Ions coldly go through NIST trap junction
Apr 08, 2009 |
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(PhysOrg.com) -- Physicists at the National Institute of Standards and Technology have demonstrated a new ion trap that enables ions to go through an intersection while keeping their cool. Ten million times ...
High-speed signal mixer demonstrates capabilities of transistor laser
Mar 19, 2009 |
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(PhysOrg.com) -- Scientists at the University of Illinois have successfully demonstrated a microwave signal mixer made from a tunnel-junction transistor laser. Development of the device brings researchers ...
Laminin builds the neuromuscular synapse
Biology /
Sep 15, 2008 |
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Like a plug and a socket, a nerve and a muscle fiber mesh at the neuromuscular junction. New work by Nishimune et al published in the Journal of Cell Biology reveals that an extracellular matrix protein called laminin shapes ...
Cardia resection for perforated gastroesophageal cancer
Jul 08, 2009 |
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Iatrogenic perforation of cancer of the esophagus or the gastroesophageal (GE) junction is a severe complication. Its incidence has increased most likely because of more aggressive palliative endoscopic therapy and the current ...
Scientists discover master regulator of motor neuron firing
Medicine & Health / Neuroscience
Mar 16, 2009 |
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(PhysOrg.com) -- When the Human Genome Project was complete, DNA bowed out of the limelight and gave way to RNA as a major player in genetic regulation. Now, findings at Rockefeller University mirror this ...
Sharp Develops Mass-Production Technology for Triple-Junction Thin-Film Solar Cells
Jan 25, 2007 |
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Sharp Corporation has successfully developed mass-production technology for stacked triple-junction thin-film solar cells by turning a conventional two-active-layer structure (amorphous silicon plus microcrystalline ...
Sharp Develops Solar Cell with World's Highest Conversion Efficiency of 35.8%
Oct 22, 2009 |
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Sharp Corporation has achieved the world's highest solar cell conversion efficiency (for non-concentrator solar cells) of 35.8% using a triple-junction compound solar cell.
IMEC unveils promising mechanically-stacked GaAs/Ge multijunction solar cell
Sep 22, 2009 |
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At the European Photovoltaic Solar Energy Conference (Hamburg, Germany), IMEC presents a mechanically-stacked GaAs/Ge multijunction solar cell. This is the first promising demonstrator of IMEC’s novel technology ...
Scientists gain new understanding of adult stem cell regulation
Aug 01, 2007 |
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Forsyth Institute scientists have discovered an important mechanism for controlling the behavior of adult stem cells. Research with the flatworm, planaria, found a novel role for the proteins involved in cell-to-cell communication. ...
New Technique Reveals Subtle Force-induced Changes in Biomolecule's Conformation
Biology /
Oct 15, 2007 |
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Scientists studying biological systems at the molecular level now have a new hybrid technique to probe the dynamics of the Holliday junction. The Holliday junction is a four-stranded DNA structure that forms ...
