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Hypothesis of coherent vibration states in biological systems based on nonlinear interaction between longitudinal elastic and electric polarization fields with metabolic energy supply was formulated by Frohlich. Conditions for excitation of coherent states and generation of electromagnetic fields are satisfied in microtubules which form electrical polar(More)
Fröhlich postulated coherent polar oscillations as a fundamental biophysical property of biological systems. Recently, Pelling et al. (2004, 2005) detected mechanical vibrations of yeast cell membrane with atomic force microscope (AFM) and analyzed by Fourier analysis in the frequency range 0.5-2 kHz with amplitudes of the order of 1 nm. This article(More)
We milled a sub-wavelength diffraction grating on the facet of a large mode area fiber. The diffraction grating had different reflectivities for TE and TM polarized light. It was tested in a thulium-doped fiber laser where it functioned as a low reflectivity output mirror integrated with an intracavity polarizer. Compared to the laser with a perpendicularly(More)
Frohlich postulated coherent polar oscillations as a fundamental biophysical property of biological systems. Pelling et al. detected recently mechanical vibrations of yeast cell membrane in the frequency range 0.5-2 kHz with atomic force microscope (AFM). This paper describes the measurement of electric activity of yeast cells at frequencies around 1 kHz(More)
We report on the electrochemical preparation of GaAs porous substrates, their heat treatment in As rich environment and their overgrowth by metalorganic vapor phase epitaxy (MOVPE). The goal is to demonstrate that porous substrates are capable of accommodating strain at the interface with highly lattice mismatched In(x)Ga(1-x)As layers.
Bulk Yb<sub>0.19</sub>Co<sub>4</sub>Sb<sub>12</sub> skutterudite prepared by hot pressing was found to be a good high temperature thermoelectric material with a high figure of merit ZT (ZT=1.2 at T=650 K). In this contribution the properties of thin layers prepared by pulsed laser deposition from such target are presented. The target was prepared by hot(More)
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