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R_Colin_Johnson
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posted in January 2005

9 items
Guiding light for optical circuits
News & Analysis  
1/31/2005   Post a comment
Cornell professor Michal Lipson heads a research group of a dozen EEs pursuing nanoscale photonics. The team has created silicon photonic chips that confine light in very small cavities that can slow down, enhance and otherwise manipulate the optical properties of light. These pioneering nanostructures enhance the light-matter interaction in silicon by orders of magnitude, Lipson claims, enabling a material's optical properties to be controlled externally — either electrically or with anoth
International team boosts thin films
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1/31/2005   Post a comment
The United States, Italy and China are cooperating to develop superior thin-film technologies that could endow future devices with properties not possible in today's processing.
Piezoelectrics move to nanoscale
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1/31/2005   Post a comment
A team at Central Michigan University (Mount Pleasant) is striving toward a model that will let designers build application-specific piezoelectric semiconductors.
Plastic chips tap IR, solar power
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1/31/2005   Post a comment
Development of a low-cost plastic infrared photovoltaic material by a group at the University of Toronto could herald a major step forward for solar power, its creators believe, by enabling solar-powered systems to also harvest infrared emissions.
Sandia partners on sensor
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1/24/2005   Post a comment
Defense contractor Custom Electronics has partnered with Sandia National Laboratories to develop a commercial sensor that will warn a driver the car's battery will fail a few days down the road.
Clock technique resonates for nixing jitter
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1/24/2005   Post a comment
Details about a resonant clock distribution circuit jointly developed by IBM Corp. and Columbia University will be revealed at the IEEE's International Solid-State Circuits Conference next month.
$200 sensor detected South Asia quake
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1/17/2005   Post a comment
A novel electronics architecture enabled a seismic sensor costing nearly one-fiftieth that of more elaborate ones to detect the recent tsunami-causing earthquake in South Asia.
Tiny magnetometer ups sensitivity
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1/17/2005   Post a comment
The National Institute of Standards and Technology has developed a chip-scale atomic magnetometer, the size of a grain of rice, that can sense magnetic fields as weak as 50 picoteslas, or a million times weaker than Earth's magnetic field.
Laser demos silicon-opto convergence
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1/10/2005   Post a comment
Intel Corp. claims to have developed the world's first all-silicon laser chip.


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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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