The separation of light-absorption and light-emission functions between the two parts of the nanostructure results in a large spectral shift of emission with respect to absorption, which greatly reduces re-absorption losses.
12.
His interpretation of this result was that the star was moving toward and then away from the Earth, and that the accompanying spectral shifts were the result of the Doppler effect.
13.
While generally referring to atomic spectral shifts due to AC fields at any ( single ) frequency, the effect is more pronounced when the field is tuned to the frequency of a natural two level transition.
14.
Nanoparticles synthesized in the substrate exhibit surface plasmon resonances as evidenced by characteristic absorption bands; these features undergo spectral shifts depending on the nanoparticle size and surface asperities, however the optical properties also strongly depend on the substrate material of the composite.
15.
More recently, Karlheinz Toepfer published in 1970 spectral shifts with increasing concentration of the thiazine dyes that matched the spectra of dye : heparin mixtures, showing clearly that metachromasia, corresponding to the colour of stained cartilage, could be reproduced by high concentration of the dye alone in solution.
