Thermalization process in photosensitive amorphous molecular semiconductors are theoretically considered from standpoint
of their parameters, namely: thermalization time, thermalization length. The heat electron formed in consequence of
absorption of the light quantum by semiconductor molecules loses his surplus energy in the time of inelastic interaction
with neighbouring atoms. The results of theoretical predictions are confirmed by the experimental ones obtained for a
number ofmolecular semiconductors
Thermalization process in photosensitive amorphous molecular semiconductors are theoretically considered from standpoint
of their parameters, namely: thermalization time, thermalization length. The heat electron formed in consequence
of absorption of the light quantum by semiconductor molecules loses his surplus energy in the time of inelastic interaction
with neighbouring atoms. The results of theoretical predictions are confirmed by the experimental ones obtained for
a number of molecular semiconductors (anthracene, pentacene, PVC, PEPC).
This paper concerns with our measurements of reaction center (RC) volume changes in the course of photoactivation
using method of holographic interferometry. As a principal value, we studed change of a solution refraction index (Δn)
influenced by the sample volume expansion due to temperature changes (ΔnT), light absorption (Δnabs) and changes in the
volume of photoactive molecules (Δnv). Using the scheme of temperature compensation we could reduce the task of the
case ΔnT << Δnabs, Δn Our estimation for the case of a protein solution yields in relative changes in the molecular volume withing 10-3 + 10-2.
This paper concerns with our measurements of reaction center (RC) volume changes in the course of photoactivation using method of holographic interferometry. As a principal value, we studed change of a solution refraction index (▵n) influenced by the sample volume expansion due to temperature changes (▵nT), light absorption (▵nabs) and changes in the volume of photoactive molecules (▵nV). Using the scheme of temperature compensation we could reduce the task of the case ▵nT<<▵nabs, ▵nV Our estimation for the case of a protein solution yields in relative changes in the molecular volume within 10-3 ÷ 10-2.
This work studies the influence of the electromagnetic radiation of low intesity on the rheologic parameters of water and water solutions of biologically active substance, which plays an important role in energy transforming processes in living organisms. The power spectrum of the thermal fluctuations of the free surface of liquid has been measured using optical heterodyning method which makes it possible to detect the changes in frequency of the light scattered by moving liquid surface. The amplitude, the spectrum of spatial and time frequencies of thermal fluctuations of free surface of a water solution was investigated using optical heteodyning method. The viscosity and the surface tensions in the micro layer of water solution were determined from the obtained results. Water solution was dealt with as a low-viscosity Newtonian liquid in this analysis and was modeled by Navier-Stokes equation and incompressibility equation.
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