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第1段

1 .This is Scientific American 60-Second Science. I'm Cynthia Graber. This'll just take a minute.

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2 .Imagine finding a new painting by Renoir.

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3 .In a way, Northwestern University chemist Richard Van Duyne did just that by revealing the original colors of what is now the faded remains of the original Madame Léon Clapisson.

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4 .He showed what it currently looks like at the recent meeting of the American Association for the Advancement of Science in Chicago.

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5 ."Somewhere near the edges where the frame was surrounding it, it protected the painting a bit from fading.

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6 .And so we analyze what the molecules were under the frame to tell us what they should be now."

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7 .Van Duyne is a pioneer in the analysis of the molecular composition of materials.

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8 .In this case he identified a red paint called carmine lake that was known to fade.

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9 .He then showed "a re-colorized version of what we imagine the painting was, based on the molecular information provided by this surface enhanced ramen spectroscopy."

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10 .The new image is much richer, the reds more vibrant, and the woman in the painting pops out with greater depth.

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11 ."Molecular analysis of paintings, that's really what's new.

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12 .There've been many ways to analyze the inorganic content of paintings and the elemental composition, brilliant methods,

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13 .and now we add molecular resolution to the whole enterprise."

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14 .Thanks for the minute, for Scientific American 60-Second Science. I'm Cynthia Graber.

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