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We demonstrate the use of broad-band low-intensity terahertz Fourier transform spectroscopy (THz-FTS) for recording the far-infrared (0.1 to 20THz) absorption characteristics of the four nucleobases forming the building blocks of deoxyribonucleic acid (DNA) as well as presenting spectra for various DNA forms. Numerous and distinct spectral features are observed with large differences between the molecules...
A differential transmission line sensor at 100 GHz is designed and analyzed. Artificial transmission lines are used in a coplanar waveguide configuration. Its high sensitivity to dielectric changes in thin layers enables detection of DNA hybridization or antibody-antigene binding processes for biomedical applications. It is simple, cheap and easy to combine with semiconductor mm-Wave sources and detectors.
Interaction of DNA and hydration water affects both structure and function of DNA. Here, we find out the relaxation time of DNA hydration water probed by THz-TDS under biological condition. Double Debye relaxation model is applied for figuring out relaxation time of hydration water. We observed 14.9ps for 50mM of DNA solution. This is much slower compared to bulk water, 8.15ps. The results indicate...
Solid-state DFT calculations were performed to simulate the spectra of adenine and adenosine polycrystallines at 5 K. Good agreements were obtained for both the samples. Adenine undergoes very pure intermolecular motions as a rigid molecule. Adenosine exerts strongly coupled vibrations between intermolecular and intramolecular motions.
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