Results 261 to 270 of about 6,543,383 (305)

Experimental Verification of a Negative Index of Refraction

Science, 2001
We present experimental scattering data at microwave frequencies on a structured metamaterial that exhibits a frequency band where the effective index of refraction ( n ) is negative. The material consists of a two-dimensional array of repeated unit cells of copper strips and split ring resonators on interlocking ...
R A, Shelby, D R, Smith, S, Schultz
openaire   +2 more sources

Experimental Verification of Electron Optic Dichroism

Physical Review Letters, 1995
Electron optic dichroism, i.e., the spin-dependent attenuation of electron beams transmitted through the vapor of chiral molecules, was investigated. No transmission asymmetry was found for longitudinally polarized electron beams of opposite helicity passing through enantiomeric camphor vapor. The experiment was carried out at electron energies of 0.9,
, Mayer, , Kessler
openaire   +2 more sources

Experimental Verification of Carrier Multiplication in Graphene

Nano Letters, 2014
We report on the first direct experimental observation of carrier multiplication in graphene reaching a multiplication factor of up to 2 and persisting on a picoseconds time scale. Exploiting multicolor pump-probe measurement techniques, the excited nonequilibrium carrier distribution is retrieved on an ultrafast time scale. This provides access to the
T, Plötzing, T, Winzer, E, Malic, D, Neumaier, A, Knorr, H, Kurz   +5 more
openaire   +2 more sources

Interferometry and the Doppler effect an experimental verification

Journal of Modern Optics, 1997
The fluctuations in the output of an interferometer when one of the mirrors is moved are actually due to a shift in the frequency of the beam reflected from the moving mirror. We describe an experiment which demonstrates unambiguously the existence of such a frequency shift.
P. Hariharan, B. Ward
openaire   +1 more source

Experimental Verification of Superachromatism

Journal of the Optical Society of America, 1966
To verify superachromatism experimentally a five-element prism, to deviate a beam of light approximately 30 degrees without dispersion or distortion, has been designed and constructed from three types of Schott glass. When tested on a spectrometer, viewing a narrow slit with a telescope magnification of approximately 30 times, no dispersion could be ...
openaire   +1 more source

Experimental verification of dynamic soaring in albatrosses

Journal of Experimental Biology, 2013
SUMMARY Dynamic soaring is a small-scale flight manoeuvre which is the basis for the extreme flight performance of albatrosses and other large seabirds to travel huge distances in sustained non-flapping flight. As experimental data with sufficient resolution of th ese small-scale movements are not available, knowledge is lacking about ...
G, Sachs, J, Traugott, A P, Nesterova, F, Bonadonna   +3 more
openaire   +2 more sources

Experimental Verification for ADVA

2018
This chapter studies the application of three-way adaptive dynamic vibration absorber in a typical piping system of vessel, including the vibration characteristics analysis of a typical piping system of vessel, the vibration absorption effect test under single-frequency excitation, and the vibration absorption effect under the actual working conditions.
Fei Wang, Zhenping Weng, Lin He
openaire   +1 more source

Experimental verification of an innovative debris detector

Acta Astronautica, 2015
Abstract To analyse the quantity of space debris and micrometeoroids in space, an innovative in-situ impact detection method has been developed at DLR (German Aerospace Center) in Bremen, Germany. The method Solar generator based Impact Detector “SOLID” uses solar panels for impact detection.
Bauer, Waldemar, Romberg, Oliver, Putzar, Robin   +2 more
openaire   +3 more sources

Experimental verification of nondiffracting X waves

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1992
The propagation of acoustic waves in isotropic/homogeneous media and electromagnetic waves in free space is governed by the isotropic/homogeneous (or free space) scalar wave equation. A zeroth-order acoustic X wave (axially symmetric) was experimentally produced with an acoustic annular array transducer.
J Y, Lu, J F, Greenleaf
openaire   +2 more sources

Experimental Verification of Decoherence-Free Subspaces

Science, 2000
Using spontaneous parametric down-conversion, we produce polarization-entangled states of two photons and characterize them using two-photon tomography to measure the density matrix. A controllable decoherence is imposed on the states by passing the photons through thick, adjustable birefringent elements.
Kwiat, P. G., Berglund, A. J., Altepeter, J. B., White, A. G.   +3 more
openaire   +5 more sources