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Effects of hydration levels on the bandwidth of microwave resonant absorption induced by confined acoustic vibrations

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9 Author(s)
Liu, Tzu-Ming ; Institute of Biomedical Engineering, National Taiwan University, Taipei 10617, Taiwan ; Chen, Hung-Pin ; Yeh, Shih-Chia ; Wu, Chih-Yu
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We found the hydration levels on the capsid surface of viruses can affect the bandwidth of microwave resonant absorption (MRA) induced by the confined acoustic vibrations (CAV). By decreasing the pH value of solution down to 5.2 or inactivating the capsid proteins, we enhanced the surface hydrophilicity and increased the magnitude of surface potentials. Both of these surface manipulations raised the surface affinity to water molecules and narrowed the bandwidths of CAV-induced MRA. Our results validate the viscoelastic transition of hydration shells.

Published in:

Applied Physics Letters  (Volume:95 ,  Issue: 17 )

Date of Publication:

Oct 2009

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