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Nanoparticles monitor enzyme activity

A team of investigators describes its use of plasmon resonance spectroscopy to detect the release of individual gold nanoparticles that are cleaved from a surface through the activity of a target enzyme.

Posted: Jun 5th, 2006

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Growing glowing nanowires to light up the nanoworld

Nanowires made of semiconductor materials are being used to make prototype lasers and light-emitting diodes with emission apertures roughly 100 nm in diameter?about 50 times narrower than conventional counterparts.

Posted: May 25th, 2006

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New material puts its own spin on electronics

Researchers have developed a novel magnetic semiconductor that may greatly increase the computing power and flexibility of future electronic devices while dramatically reducing their power consumption.

Posted: May 24th, 2006

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Microfluidics device tracks breast cancer cell movements

Malignant cells are notorious for their ability to break away from a tumor, migrate to other seemingly targeted locations in the body, and establish new tumors, called metastases. The biochemical signals that guide tumor cell migration are poorly understood, but efforts to find those signals should receive a boost thanks to a new microfluidics device designed specifically to track how breast cancer cells move in response to chemical signals.

Posted: May 22nd, 2006

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Quantum dots studied as intracellular monitors, possible therapeutic agents

One of the unique features of nanoscale materials is that they are often of the same size as most biomolecules, and thus can be used to study intracellular biochemistry without themselves having much of an impact on normal cellular function. Now, an international team led by investigators at McGill University has taken advantage of the small size of quantum dots to create a nanoscale device that can report on the oxidative conditions within a cell.

Posted: May 22nd, 2006

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