Observation of Optical Second Harmonic Generation in Wet-Spun Films of Na-DNA
| Autor: | H. J. Simon, A. Rupprecht, Yanli Wang, Scott Lee, W. Williamson |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
animal structures
Chemistry Analytical chemistry Second-harmonic imaging microscopy food and beverages Humidity Second-harmonic generation Polarization (waves) humanities Atomic and Molecular Physics and Optics Analytical Chemistry Relative humidity Surface second harmonic generation Spectroscopy Laser beams |
| Zdroj: | Spectroscopy Letters. 26:849-858 |
| ISSN: | 1532-2289 0038-7010 |
| Popis: | The observation of optical second harmonic generation (SHG) from wetspun films of Na-DNA is reported. The SHG signal is stronger at a relative humidity of 92% (corresponding to the B conformation of Na-DNA) than at low humidity of -33% (corresponding to a disordered conformation of Na-DNA). The strength of the SHG signal is also dependent on the orientation of the incident laser beam polarization with respect to the DNA helical axes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|