Wolfgang Mönch

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Recent experiments on the static and dynamic properties of polycrystalline colloidal solids show a pronounced influence of morphological details. Here we investigate several possibilities to vary systematically one key morphological parameter, namely the average crystallite radius r c of polycrystalline solids. We report measurements of r c as observed by(More)
Habilitationsschrift zur Erlangung des akademischen Grades doctor rerum naturalium habilitatus ii Acknowledgments Of the many who have helped me along in the work contained this thesis there are some I wish to thank expressly. Gene Golub brought me to Stanford for graduate study, where, besides his nurturing, I enjoyed four sunny and formative years in the(More)
A highly parallel microarray scanner for functional genomic research using a dynamically reconfigurable holographic excitation and hyperspectral fluorescence detection is described. The light from two laser sources (405 and 532 nm) is split into an arbitrary number of focused spots on the biochip using a pair of spatial light modulators and a novel imaging(More)
We report on the optical properties of Bragg mirrors and filters fabricated from photo-cross-linked standard optical polymers. The transmittance spectra of these devices in the visible to near-infrared spectral range were measured. We demonstrate efficient tuning of the filter peak of the polymer Bragg filters over several hundred nanometers by adding(More)
We present novel biconvex solid-body elastomer (polydimethylsiloxane) lenses, which can be tuned in focal length by using magnetic or mechanical actuation. The focal length change is induced by applying radial elastic strain and is investigated for different initial radii of curvature of the lenses and different actuation designs. In all cases, a linear(More)
It is shown theoretically and experimentally that opto-electrowetting may be used for both pulling and pushing liquid droplets. A theoretical analysis based on the Lippmann-equation and an electronic equivalent circuit model allows definition of a voltage and frequency range for which pushing may be achieved, a novelty in electrowetting-based actuation.(More)
ALGOL procedures for the iterative refinement of an approximation to a generalized inverse of a matrix and some results of numerical tests with ill-conditioned and rank-deficient matrices are given. Es werden ALGOL-Prozeduren zur Nachkorrektur einer näherungsweise berechneten, verallgemeinerten Inversen einer Matrix sowie einige Ergebnisse von(More)
Alcohol appears to be a predisposing factor for the high incidence of oesophageal cancer in Western France. Therefore, we have investigated the influence of ethanol on the alkylation of DNA by a carcinogen which reacts selectively with oesophageal tissue. Female Wistar rats (approximately 80 g) received a single i.v. injection of(More)