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Photo-Triggered On Demand Drug Release Of Nanoparticles, National Cheng Kung University Medical College Study  
4/27/2009 7:22:57 AM

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Nanowerk -- (Nanowerk Spotlight) A number of applications in nanomedicine – imaging, drug delivery or photo therapy for instance – utilize phenomena called two-photon absorption (TPA). In TPA, the simultaneous absorption of two photons excite a molecule from one state to a higher energy electronic state. TPA initially was used only as a spectroscopic tool but new applications emerged over time.

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