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Medical Xpress October 11, 2021
Laurie Fickman, University of Houston

When it comes to cancer detection, size matters. Traditional diagnostic imaging cannot detect tumors smaller than a certain size, causing missed opportunities for early detection and treatment. Circulating tumor exosomes are especially small cancer biomarkers and easy to miss. These nanovesicles are composed of molecules that reflect the parental cells. But, because they are tiny (~30-150nm in diameter) and complex, the precise detection of exosome-carried biomarkers with molecular specificity is elusive.

Until now, reports Wei-Chuan Shih, professor of electrical and computer engineering at the University of Houston Cullen College of Engineering, in IEEE Sensors journal.

“This work demonstrates, for the first time, that the strong synergy of arrayed radiative coupling and substrate undercut can enable high-performance biosensing in the visible…

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2021-10-11T19:52:46-04:00

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