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R_Colin_Johnson
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posted in August 2002

4 items
Nanotechnology creates ideal optical medium
News & Analysis  
8/27/2002   Post a comment
Optical experiments using arrays of nanowires are demonstrating that the concept of a negative refractive index could be realized in practical systems.
Nanoscale metal deposition eyed for MRAMs
News & Analysis  
8/19/2002   Post a comment
A new technique for fabricating magnetic tunnel junctions would enable magnetoresistive random-access memories (MRAMs) to be economically manufactured, according to researchers here at the Pacific Northwest National Laboratory.
Adaptive electron scope makes sub-angstrom measures
News & Analysis  
8/7/2002   Post a comment
Using adaptive optics techniques employed by advanced astronomical telescopes, researchers at IBM Corp.'s Thomas J. Watson Research Center have developed an electron microscope that can make sub-angstrom measurements in finer detail using less power than previous systems.
Quantum computer called possible with today's tech
News & Analysis  
8/6/2002   Post a comment
Researchers at the University of Wisconsin in Madison claim to have created the world's first successful simulation of a quantum-computer architecture that uses existing silicon fabrication techniques. "We believe that quantum computers are possible today with the component technologies we already have in place for silicon," said physics professor Mark Eriksson.


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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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