Hydration dynamics of oriented DNA films investigated by time-domain terahertz spectroscopy
Hydration dynamics of oriented DNA films investigated by time-domain terahertz spectroscopy
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2007
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Kistner, Caroline
André, Alexander
Fischer, Theo
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Applied Physics Letters ; 90 (2007). - 233902
Abstract
The B to A conformational transition of highly oriented DNA films due to a hydration change is observed with time-domain terahertz spectroscopy. Wet-spun films of calf thymus and salmon DNA are investigated for different film thicknesses and for different polarizations of the terahertz radiation relative to the DNA orientation. A clear polarization dependence is observed. Asynchronous optical sampling allows recording of terahertz absorption and background spectra in a few 10 s, permitting the tracking of the dehydration dynamics on a time scale of minutes. The observation of a phase transition is corroborated by Raman spectroscopy.
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KISTNER, Caroline, Alexander ANDRÉ, Theo FISCHER, Arne THOMA, Christof JANKE, Albrecht BARTELS, Thomas GISLER, Georg MARET, Thomas DEKORSY, 2007. Hydration dynamics of oriented DNA films investigated by time-domain terahertz spectroscopy. In: Applied Physics Letters. 90, 233902. Available under: doi: 10.1063/1.2743401BibTex
@article{Kistner2007Hydra-4673, year={2007}, doi={10.1063/1.2743401}, title={Hydration dynamics of oriented DNA films investigated by time-domain terahertz spectroscopy}, volume={90}, journal={Applied Physics Letters}, author={Kistner, Caroline and André, Alexander and Fischer, Theo and Thoma, Arne and Janke, Christof and Bartels, Albrecht and Gisler, Thomas and Maret, Georg and Dekorsy, Thomas}, note={Article Number: 233902} }
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