Now showing items 1-8 of 8
Vibrational analysis of 2,2,3-trichlorobutane and a force field for 2,2-dichloropropane
(Elsevier, 1990)
The infrared and Raman spectra of 2,2,3-dichlorobutane have been analysed in terms of normal modes calculated from a force field for secondary dichlorides refined using this molecule as well as 2,2-dichlorobutane and ...
Vibrational analysis of 2,3,4-trichloropentanes
(Elsevier, 1990)
One meso form and the racemic isomer of 2,3,4-trichloropentane have been synthesized, and their infrared and Raman spectra analysed on the basis of a general force field refined for multiply-chlorinated hydrocarbons. ...
A polarized photobleaching study of chromatin reorientation in intact nuclei
(Elsevier, 1990-08-20)
Polarized fluorescence recovery after photobleaching (pFRAP) was used to monitor the effects that condensation, i.e. compaction and aggregation, have on the ([mu]s and ms) internal dynamics of chromatin in intact nuclei. ...
Comprehensive force field for multiply-chlorinated hydrocarbons
(Elsevier, 1990)
A force field is presented that has been optimized for chlorinated hyrocarbons containing isolated, vicinal, and geminal secondary chlorines. For carbon--chlorine stretch modes, 74 frequencies in 10 molecules are reproduced ...
High resolution laser spectroscopy of relaxation and the excitation lineshape of excitons in GaAs quantum well structures
(Elsevier, 1990-04-01)
A new class of measurements on GaAs quantum well structures based on frequency domain nonlinear laser spectroscopy is described. Room temperature measurements of the excitation relaxation show an interference effect in the ...
Epitaxial growth and characterization of GaAs/Al/GaAs heterostructures
(Elsevier, 1990-04-01)
We report on transmission electron microscopy, secondary ion mass spectroscopy, X-ray and Raman scattering studies of GaAs/Al/GaAs heterostructures grown by migration enhanced epitaxy.
Charge-density domains in photoexcited quantum-well structures
(Elsevier, 1990-04-01)
We present theoretical and experimental results on the dielectric response of an electron-hole plasma confined to a quantum-well. Hartree calculations reveal large nonlinearities in the screening properties which, when ...