W. Staude

University of Bremen

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Wolffram Schröer

University of Bremen

L. B. Aberle

University of Konstanz

Simone Wiegand

Forschungszentrum Jülich

R.N. Tyte

Max Planck Institute for Solid State Research

A. P. Malozemoff

American Superconductor (United States)

G A Gehring

University of Sheffield

Hartmut Kriegs

Forschungszentrum Jülich

Peter Hülstede

University of Bremen

C. Keveloh

University of Bremen

R.J. Schulz

University of Tennessee at Knoxville

Cooperative Institutions

University of Bremen

Goethe University Frankfurt

Russian Academy of Sciences

University of Oxford

TU Dortmund University

Karlsruhe Institute of Technology

Fraunhofer Institute for Manufacturing Technology and Advanced Materials

Forschungszentrum Jülich

Stadtwerke Jülich (Germany)

Clarendon College

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Observation of magnetically controllable distortion in TbVO4 by optical spectroscopy

Solid State Communications (1971)

K. A. Gehring A. P. Malozemoff W. Staude R.N. Tyte

Distortion (music)

10.1016/0038-1098(71)90135-9

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Citations (70)

Suppression of multiple scattered light by photon cross-correlation in a 3D experiment

Progress in Colloid & Polymer Science (1997)

L. B. Aberle Simone Wiegand W. Schr�er W. Staude

10.1007/bf01182426

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Citations (26)

The measurement of velocity gradients in laminar and turbulent flow

Journal of Physics D Applied Physics (1988)

C. Keveloh W. Staude

A method of measuring velocity gradients on the basis of a photon correlation technique has been developed. Depending on the scattering geometry, particular rows of the velocity gradient tensor Gamma can be determined for laminar flow without any knowledge of the flow symmetry. The method is also applicable to turbulent flow. With the assumption of a normal distribution of the tensor elements of one row of Gamma , the measured correlation functions for a tube flow can be fitted satisfactorily. Limits of the applicability of the method are discussed.

Velocity gradient

10.1088/0022-3727/21/2/002

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Citations (10)

Theory of uniaxial stress in the cooperative jahn-teller distortion of DyVO4

Journal of Physics and Chemistry of Solids (1972)

G A Gehring A. P. Malozemoff W. Staude R.N. Tyte

Hamiltonian (control theory)

Jahn–Teller effect

Stress field

Phase boundary

10.1016/s0022-3697(72)80442-6

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Citations (36)

Circular dichroism of the K band in RbCl

Physics Letters A (1968)

E. Krätzig W. Staude

Vibrational Circular Dichroism

10.1016/0375-9601(68)90517-3

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Citations (4)

An Interferometric Method for Plant Growth

Zhong‐Tao Jiang W. Staude

An interferometric method in connection with a correlation technique for measuring the velocity of moving parts of plants is described. Velocities down to 5-0 mm d_1 can be measured reliably in a minute. Values of stem elongation rates of etiolated seedlings of a variety of species obtained by this method are very similar to those obtained by the application of linear displacement transducers. Since the optical method requires no mechanical coupling to the plant, velocities of sensitive plant organs can be determined, as shown by measurements of leaf motion.

Etiolation

Elongation

Source

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Citations (0)

Magneto‐Reflectivity Measurements on Exciton Bands in CuCl

physica status solidi (b) (1971)

W. Staude

Abstract The influence of an external magnetic field on the normal incidence reflectivity of CuCl single crystals has been measured in the Voigt and Faraday configurations. The results are discussed in terms of the dielectric function calculated from the reflectivity spectrum by a Kramers‐Kronig transformation. In the Voigt configuration two new exciton bands can be observed, which are attributed to a triplet and a longitudinal exciton. Their energetic positions are used to determine the parameters of electron‐hole exchange interaction in the 1s excitons, and the spin‐orbit splitting parameter of the upper valence band. The excitonic g ‐values are determined from the Faraday configuration measurements and can be interpreted on the basis of the tight binding model.

Faraday cage

10.1002/pssb.2220430138

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Citations (69)

Measurement and analysis of optical inhomogeneities with steep refractive-index gradients in stationary transparent media by speckle-interferometry methods

Journal of Russian Laser Research (1999)

N. Shatokhina W. Staude V. I. Zubov T. T. Sultanov

Speckle imaging

10.1007/bf02508613

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Citations (2)

A comparison of 3D static light-scattering experiments with Monte Carlo simulations

Journal of Physics D Applied Physics (1999)

L. B. Aberle Malte Kleemeier Peter Hülstede Simone Wiegand Wolffram Schröer

The problems arising in conventional static light-scattering experiments with turbid samples due to multiple scattering of light can be overcome by the cross correlation technique. We recently reported results of 3D cross correlation experiments in which the angle dependence of the experimentally determined values of the singly scattered light intensity agrees with that of the scattering cross section of the suspended particles. In this paper we present measurements for various optical path lengths of the scattered light and compare the experimental results with Monte Carlo simulations. We demonstrate that the dependences of the singly and multiply scattered light intensities on the optical path length obtained by the 3D cross correlation method are in good agreement with the data obtained from Monte Carlo simulations. These results further confirm that the 3D cross correlation technique indeed allows the direct determination of the singly scattered light intensity by experimental means without any need for the detailed information about the experimental set-up that is necessary in Monte Carlo simulations.

Intensity

10.1088/0022-3727/32/1/005

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Citations (21)

An Interferometric Method for Plant Growth Measurements

Journal of Experimental Botany (1989)

Zhong‐Tao Jiang W. Staude

An interferometric method in connection with a correlation technique for measuring the velocity of moving parts of plants is described. Velocities down to 5.0 mm d−1 can be measured reliably in a minute. Values of stem elongation rates of etiolated seedlings of a variety of species obtained by this method are very similar to those obtained by the application of linear displacement transducers. Since the optical method requires no mechanical coupling to the plant, velocities of sensitive plant organs can be determined, as shown by measurements of leaf motion.

Etiolation

Elongation

SIGNAL (programming language)

10.1093/jxb/40.10.1169

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Citations (20)