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CCNY's Robert Alfano wins first biomedical optics award
Date:1/6/2012

n Hospital and later with other area medical centers to test breast, cervix and liver tissue samples.

"When you shine a little light on the tissue it glows," he explained. He found that different combinations of molecules on healthy and cancerous samples produced specific spectral emissions when excited by a laser. "The colors of the emissions are different. If the molecules are good you get one glow, if they're bad you get another. It's like a fingerprint," he added. "In that glow is all the information you need about the molecules that are there."

In 1991 Professor Alfano and his colleagues extended their early work using another optical technique called Raman scattering, which doesn't rely on fluorescence and has a higher resolution and sharper spectral lines to detect differences between cancerous, precancerous, and normal tissue. More recently, his lab has been refining cancer detection using Stokes shift spectroscopy, which combines absorption and fluorescence for a higher degree of accuracy.

Professor Alfano also co-discovered the supercontinuum ultrafast white light source, among other achievements recognized by the award, which spans from the visible to the near-infrared part of the light spectrum. The discovery enabled research resulting in two Nobel Prizes. The winner of the Chemistry Nobel in 1999 used the supercontinuum to monitor chemical reactions. Winners of the 2005 Nobel Prize in Physics tapped it to create the most accurate clock in existence. Others, Japanese researchers in particular, are using the supercontinuum in communications to boost available channels and bandwidth (into the terabits per second range.)

Professor Alfano has published more than 700 papers, and has 108 patents and more than 11,000 citations. He praises his many colleagues, post-doctoral researchers, graduate and undergraduate students for their many contributions to the research, as well as a person key to converting countless ideas and de
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Contact: Jessa Netting
jnetting@ccny.cuny.edu
212-650-7615
City College of New York
Source:Eurekalert

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