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2009


Full phase and amplitude control in computer-generated holography
Full phase and amplitude control in computer-generated holography

Fratz, M., Fischer, P., Giel, D. M.

OPTICS LETTERS, 34(23):3659-3661, 2009 (article)

Abstract
We report what we believe to be the first realization of a computer-generated complex-valued hologram recorded in a single film of photoactive polymer. Complex-valued holograms give rise to a diffracted optical field with control over its amplitude and phase. The holograms are generated by a one-step direct laser writing process in which a spatial light modulator (SLM) is imaged onto a polymer film. Temporal modulation of the SLM during exposure controls both the strength of the induced birefringence and the orientation of the fast axis. We demonstrate that complex holograms can be used to impart arbitrary amplitude and phase profiles onto a beam and thereby open new possibilities in the control of optical beams. (C) 2009 Optical Society of America

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[BibTex]

2009


[BibTex]


Digital polarization holograms with defined magnitude and orientation of each pixel's birefringence
Digital polarization holograms with defined magnitude and orientation of each pixel’s birefringence

Fratz, M., Giel, D. M., Fischer, P.

OPTICS LETTERS, 34(8):1270-1272, 2009 (article)

Abstract
A new form of digital polarization holography is demonstrated that permits both the amplitude and the phase of a diffracted beam to be independently controlled. This permits two independent intensity images to be stored in the same hologram. To fabricate the holograms, a birefringence with defined retardance and orientation of the fast axis is recorded into a photopolymer film. The holograms are selectively read out by choosing the polarization state of the read beam. Polarization holograms of this kind increase the data density in holographic data storage and allow higher quality diffractive optical elements to be written. (C) 2009 Optical Society of America

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Interplay of complete wetting, critical adsorption, and capillary condensation

Drzewinski, A., Maciolek, A., Barasinski, A., Dietrich, S.

Physical Review E, 79, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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The critical Casimir effect: universal fluctuation-induced forces at work

Gambassi, A., Hertlein, C., Helden, L., Dietrich, S., Bechinger, C.

Europhysics News, 40(01):18-22, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Effective interactions of colloids on nematic films

Oettel, M., Dominguez, A., Tasinkevych, M., Dietrich, S.

European Physical Journal E, 28(02):99-111, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Self-diffusion and cooperative diffusion in semidilute polymer solutions as measured by fluorescence correlation spectroscopy

Zettl, U., Hoffmann, S. T., Koberling, F., Krausch, G., Enderlein, J., Harnau, L., Ballauff, M.

Macromolecules, 42, pages: 9537-9547, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Free-energy function based on an all-atom model for proteins

Yoshidome, T., Oda, K., Harano, Y., Roth, R., Sugita, Y., Ikeguchi, M., Kinoshita, M.

Proteins: Structure, Function, and Bioinformatics, 77(4):950-961, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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On scale-free and poly-scale behaviors of random hierarchical networks

Avetisov, V. A., Chertovitch, A. V., Nechaev, S .K., Vasilyev, O. A.

Journal of Statistical Mechanics: Theory and Experiment, July 2009, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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3D Brownian diffusion of submicron-sized particle clusters

Hoffmann, M., Wagner, C. S., Harnau, L., Wittemann, A.

ACS Nano, 3(10):3326-3334, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


Controlled Propulsion of Artificial Magnetic Nanostructured Propellers
Controlled Propulsion of Artificial Magnetic Nanostructured Propellers

Ghosh, A., Fischer, P.

NANO LETTERS, 9(6):2243-2245, 2009, Featured highlight ‘Nanotechnology: The helix that delivers’ Nature 459, 13 (2009). (article)

Abstract
For biomedical applications, such as targeted drug delivery and microsurgery, it is essential to develop a system of swimmers that can be propelled wirelessly in fluidic environments with good control. Here, we report the construction and operation of chiral colloidal propellers that can be navigated in water with micrometer-level precision using homogeneous magnetic fields. The propellers are made via nanostructured surfaces and can be produced in large numbers. The nanopropellers can carry chemicals, push loads, and act as local probes in rheological measurements.

Featured highlight ‘Nanotechnology: The helix that delivers’ Nature 459, 13 (2009).

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Video - Nanospropellers DOI [BibTex]

Video - Nanospropellers DOI [BibTex]


Absolute Asymmetric Reduction Based on the Relative Orientation of Achiral Reactants
Absolute Asymmetric Reduction Based on the Relative Orientation of Achiral Reactants

Kuhn, A., Fischer, P.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 48(37):6857-6860, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Normal and lateral critical Casimir forces between colloids and patterned substrates

Tröndle, M., Kondrat, S., Gambassi, A., Harnau, L., Dietrich, S.

EPL, 88, 2009 (article)

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DOI [BibTex]


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Critical wetting transitions in two-dimensional systems subject to long-ranged boundary fields

Drzewinski, A., Maciolek, A., Barasinski, A., Dietrich, S.

Physical Review E, 79, 2009 (article)

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DOI [BibTex]


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Derivation of a non-local interfacial model for 3D wetting in an external field

Bernardino, N. R., Parry, A. O., Rascon, C., Romero-Enrique, J. M.

Journal of Physics: Condensed Matter, 21(46), 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Coupling of rotational motion with shape fluctuations of core-shell microgels having tunable softness

Bolisetty, S., Hoffmann, M., Lekkala, S., Hellweg, T., Ballauff, M., Harnau, L.

Macromolecules, 42, pages: 1264-1269, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Strong-disorder paramagnetic-ferromagnetic fixed point in the square-lattice +/-J Ising model

Parisen Toldin, F., Pelissetto, A., Vicari, E.

Journal of Statistical Physics, 135(5):1039-1061, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Structure and interaction of flexible dendrimers in concentrated solution

Rosenfeldt, S., Ballauff, M., Lindner, P., Harnau, L.

The Journal of Chemical Physics, 130, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Layering of (BMIM)+-based ionic liquids at a charged sapphire interface

Mezger, M., Schramm, S., Schröder, H., Reichert, H., Deutsch, M., de Souza, E. J., Okasinski, J. S., Ocko, B. M., Honkimäki, V., Dosch, H.

Journal of Chemical Physics, 131, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Nano-droplets on structured substrates

Rauscher, M. A., Dietrich, S.

Soft Matter, 5(16):2997-3001, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Self-assembly of Janus cylinders into hierarchical superstructures

Walther, A., Drechsler, M., Rosenfeldt, S., Harnau, L., Ballauff, M., Abetz, V., Müller, A. H. E.

Journal of the American Chemical Society, 131, pages: 4720-4728, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Solvent-mediated interactions between nanoparticles at fluid interfaces

Bresme, F., Lehle, H., Oettel, M.

Journal of Chemical Physics, 130(21), 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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From colloids to biophysics: applications of classical density functional theory

Roth, R.

Universität Stuttgart, Stuttgart, 2009 (phdthesis)

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[BibTex]

[BibTex]


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Diffusion of a sphere in a dilute solution of polymer coils

Krüger, M., Rauscher, M.

Journal of Chemical Physics, 131(9), 2009 (article)

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link (url) DOI [BibTex]

link (url) DOI [BibTex]


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Dynamics of nanodroplets on topographically structured substrates

Moosavi, A., Rauscher, M., Dietrich, S.

Journal of Physics: Condensed Matter, 21(46), 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Critical Casimir effect in classical binary liquid mixtures

Gambassi, A., Maciolek, A., Hertlein, C., Nellen, U., Helden, L., Bechinger, C., Dietrich, S.

Physical Review E, 80, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Phase transitions and ordering of confined dipolar fluids

Szalai, I., Dietrich, S.

European Physical Journal E, 28(3):347-359, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Nonlinear dielectric effect of dipolar fluids

Szalai, I., Nagy, S., Dietrich, S.

Journal of Chemical Physics, 131(15), 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Some physical applications of random hierarchical matrices

Avetisov, V. A., Bikulov, A. K., Vasilyev, O. A., Nechaev, S. K., Chertovich, A. V.

Journal of Experimental and Theoretical Physics, 109(3):485-504, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Interaction of cylindrical polymer brushes in dilute and semi-dilute solution

Bolisetty, S., Rosenfeldt, S., Rochette, C. N., Harnau, L., Lindner, P., Xu, Y., Mueller, A. H. E., Ballauff, M.

Colloid and Polymer Science, 287, pages: 129-138, 2009 (article)

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DOI [BibTex]


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Survival of an evasive prey

Oshanin, G., Vasilyev, O., Krapivsky, P. L., Klafter, J.

Proceedings of the National Academy of Sciences of the United States of America, 106(33):13696-13701, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Stäbchensuspensionen in Kontakt mit geometrisch strukturierten Substraten

Günther, F.

Universität Stuttgart, Stuttgart, 2009 (mastersthesis)

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[BibTex]

[BibTex]


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Manipulating cylindrical polyelectrolyte brushes on the nanoscale by counterions: collapse transition to helical structures

Xu, Y., Bolisetty, S., Drechsler, M., Fang, B., Yuan, J., Harnau, L., Ballauff, M., Mueller, A. H. E.

Soft Matter, 5, pages: 379-384, 2009 (article)

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link (url) [BibTex]

link (url) [BibTex]


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Confinement effects on diffusiophoretic self-propellers

Popescu, M. N., Dietrich, S., Oshanin, G.

Journal of Chemical Physics, 130(19), 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Line tension and the shape of nanodroplets

Schimmele, L., Dietrich, S.

European Physical Journal E, 30(4):427-430, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Critical Casimir interaction of ellipsoidal colloids with a planar wall

Kondrat, S., Harnau, L., Dietrich, S.

The Journal of Chemical Physics, 131, 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Selectivity in binary fluid mixtures: static and dynamical properties

Roth, R., Rauscher, M., Archer, A. J.

Physical Review E, 80(2), 2009 (article)

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link (url) DOI [BibTex]

link (url) DOI [BibTex]


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Depletion interactions of two spheres - Full density functional theory vs. morphometric results

Oettel, M., Hansen-Goos, H., Bryk, P., Roth, R.

EPL, 85(03), 2009 (article)

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DOI [BibTex]

DOI [BibTex]


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Fundamental measure theory for inhomogeneous fluids of nonspherical particles

Hansen-Goos, H., Mecke, K.

Physical Review Letters, 102(1), 2009 (article)

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DOI [BibTex]

DOI [BibTex]

2007


Frequency-domain displacement sensing with a fiber ring-resonator containing a variable gap
Frequency-domain displacement sensing with a fiber ring-resonator containing a variable gap

Vollmer, F., Fischer, P.

SENSORS AND ACTUATORS A-PHYSICAL, 134(2):410-413, 2007 (article)

Abstract
Ring-resonators are in general not amenable to strain-free (non-contact) displacement measurements. We show that this limitation may be overcome if the ring-resonator, here a fiber-loop, is designed to contain a gap, such that the light traverses a free-space part between two aligned waveguide ends. Displacements are determined with nanometer sensitivity by measuring the associated changes in the resonance frequencies. Miniaturization should increase the sensitivity of the ring-resonator interferometer. Ring geometries that contain an optical circulator can be used to profile reflective samples. (c) 2006 Elsevier B.V. All rights reserved.

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2007


DOI [BibTex]


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Monte Carlo simulation results for critical Casimir forces

Vasilyev, O., Gambassi, A., Maciolek, A., Dietrich, S.

EPL, 80, 2007 (article)

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DOI [BibTex]

DOI [BibTex]


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Critical Casimir effect in superfluid wetting films

Maciolek, A., Gambassi, A., Dietrich, S.

Physical Review E, 76, 2007 (article)

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DOI [BibTex]

DOI [BibTex]


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Complete wetting of pits and grooves

Tasinkevych, M., Dietrich, S.

European Physical Journal e: Soft Matter, 23(1):117-128, 2007 (article)

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[BibTex]

[BibTex]


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Experimental observation of structural crossover in binary mixtures of colloidal hard spheres

Baumgartl, J., Dullens, R. P. A., Dijkstra, M., Roth, R., Bechinger, C.

Physical Review Letters, 98, 2007 (article)

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DOI [BibTex]

DOI [BibTex]


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Physical basis for characterizing native structures of proteins

Harano, Y., Roth, R., Sugita, Y., Ikeguchi, M., Kinoshita, M.

Chemical Physics Letters, 437(1 - 3):112-116, 2007 (article)

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[BibTex]

[BibTex]


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Importance of boundary conditions for fluctuation-induced forces between colloids at interfaces

Lehle, H., Oettel, M.

Physical Review E, 75(1), 2007 (article)

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[BibTex]

[BibTex]


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Colloid-colloid and colloid-wall interactions in driven suspensions

Krüger, M., Rauscher, M.

The Journal of Chemical Physics, 127(3), 2007 (article)

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DOI [BibTex]

DOI [BibTex]


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Solvation of proteins: linking thermodynamics to geometry

Hansen-Goos, H., Roth, R., Mecke, K., Dietrich, S.

Physical Review Letters, 99, 2007 (article)

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DOI [BibTex]

DOI [BibTex]


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Thermal noise influences fluid flow in thin films during spinodal dewetting

Fetzer, R., Rauscher, M., Seemann, R., Jacobs, K., Mecke, K.

Physical Review Letters, 99(11), 2007 (article)

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DOI [BibTex]

DOI [BibTex]