Optical properties of helical edge channels in zinc-blende-type topological insulators: selection rules, circular and linear dichroism, circular and linear photocurrents

DichroCalc - circular and linear dichroism online

MOTIVATION Circular dichroism (CD) is widely used in studies of protein folding. The CD spectrum of a protein can be estimated from its structure alone, using the well-established matrix method. In the last decade, a related spectroscopy, linear dichroism (LD), has been increasingly applied to study the orientation of proteins in solution. However, matrix method calculations of LD spectra have ...

Circular Dichroism and Optical Rotation?

Tailorable plasmonic circular dichroism properties of helical nanoparticle superstructures.

We utilize a peptide-based methodology to prepare a diverse collection of double-helical gold nanoparticle superstructures having controllable handedness and structural metrics. These materials exhibit well-defined circular dichroism signatures at visible wavelengths owing to the collective dipole-dipole interactions between the nanoparticles. We couple theory and experiment to show how tuning ...

Linear and Circular Dichroism in the Vacuum Ultraviolet Region

Circular dichroism spectroscopy has been extended to the VUV region through the introduction of the photo-elastic modulator with a calcium fluoride optical element. Spectroscopic and stereochemical applications of the technique to chiral molecules in the vapour and in the condensed phase are reviewed, together with related linear dichroism studies of orientated molecular systems. 1 . Introducti...

Linear and circular dichroism of membranes from Rhodopseudomonas capsulata.

Absorption, linear dichroism and circular dichroism spectra of Rhodopseudomonas capsulata (wild-type-St. Louis strain, mutant Y5 and mutant Ala+) are particularly sensitive to the nature of the light-harvesting bacteriochlorophyll-carotenoid-protein complexes. Evidence for exciton-type interactions is seen near 855 nm in the membranes from the wild-type and from mutant Y5, as well as in an isol...