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R_Colin_Johnson
Member Since: June 18, 2009
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posted in October 2004

10 items
Silicon optics switches by changing refractive index
News & Analysis  
10/27/2004   Post a comment
Cornell University researchers have demonstrated nanoscale techniques they say enabled the world's first silicon chip that switches optical wavelengths.
'Spin filter' initializes quantum computing
News & Analysis  
10/25/2004   Post a comment
Purdue University researchers have invented a "spin filter" that can sort charge carriers by their spin state. "This component is essential to future quantum computers, which need to be initialized in a known state," said professor Leonid Rokhinson. "It will also be necessary for the many other 'spintronic' devices that people are working on today."
EEs needed to propel mag-beams
News & Analysis  
10/25/2004   Post a comment
EEs are desperately needed to help design magnetized-beam plasma propulsion systems that could send future spacecraft to Mars and back in 90 days.
Biosensor slashes time to detect Listeria bacteria
News & Analysis  
10/18/2004   Post a comment
A fiber-optic biosensor that reduces testing time for a deadly form of the Listeria bacteria from one week to less than 24 hours has been created by two Purdue University microbiologists and a control engineer.
Photoluminescent method detects explosives at a distance
News & Analysis  
10/18/2004   Post a comment
Experience in photoluminescent spectroscopy has helped university researchers bring to light a method by which explosives can be detected at a distance.
NEMS tunes the 'most sensitive' accelerometer
News & Analysis  
10/11/2004   Post a comment
By coupling a nanoscale etched diffraction grating to an optical sensor, Sandia National Laboratories researchers have demonstrated an accelerometer that they say is the most sensitive in the world.
EEs seek way to ID triggers of Iraq's IEDs
News & Analysis  
10/11/2004   Post a comment
One of the United States' largest electromagnetic-emission "shielding" labs has switched roles to help armed-services personnel detect bombs.
Demo takes subwavelength focusing to visible light
Design How-To  
10/11/2004   Post a comment
Engineers at Purdue University claim to have conjured a mathematical model for metamaterials that designers can use to improve the resolution of lenses below the wavelength of light.
Quantum-encryption milestone reached
News & Analysis  
10/4/2004   Post a comment
A prototype quantum-key distribution system may move from lab to commercial systems as early as next year, NEC Corp. reports.
Darpa funds work on rigid shape-shifting materials
News & Analysis  
10/4/2004   Post a comment
A new world of applications for shape-changing materials might become available if man-made rigid structures — like an airplane wing, which derives its strength from being "fixed" — could adopt the abilities of rigid structures that can change shape, like a flower stem that twists to follow the sun.


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