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Dive into the research topics where Wolfgang Stocker is active.

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Featured researches published by Wolfgang Stocker.


Polymer Bulletin | 1991

Atomic force microscopy on epitaxially crystallized isotactic polypropylene

Bernard Lotz; J. C. Wittmann; Wolfgang Stocker; S. N. Magonov; H. J. Cantow

SummaryContact faces of thin films of α-phase isotactic polypropylene epitaxially crystallized on benzoic acid are examined by atomic force microscopy (AFM). The AFM images reveal the lamellar structure as well as the methyl side group pattern, thus enabling the discrimination between two structurally different contact surfaces in favour of the ‘four’ face type, with one methyl group per helix turn exposed. Furthermore it has been verified, that the observed helices are right-handed.


Macromolecules | 1998

Epitaxial Crystallization and AFM Investigation of a Frustrated Polymer Structure: Isotactic Poly(propylene), β Phase

Wolfgang Stocker; Martina Schumacher; Sabine Graff; Annette Thierry; Jean-Claude Wittmann; Bernard Lotz


Macromolecules | 1993

Contact faces of epitaxially crystallized .alpha.- and .gamma.-phase isotactic polypropylene observed by atomic force microscopy

Wolfgang Stocker; Sergei Magonov; Hans-Joachim Cantow; Jean-Claude Wittmann; Bernard Lotz


Macromolecules | 1996

Surface Reconstruction of the Lamellar Morphology in a Symmetric Poly(styrene-block-butadiene-block-methyl methacrylate) Triblock Copolymer: A Tapping Mode Scanning Force Microscope Study

Wolfgang Stocker; Jörg Beckmann; Reimund Stadler; Jürgen P. Rabe


Journal of the American Chemical Society | 1998

ORDERED DENDRITIC NANORODS WITH A POLY(P-PHENYLENE) BACKBONE

Wolfgang Stocker; Birol Karakaya; Britta L. Schürmann; and Jürgen P. Rabe; A. Dieter Schlüter


Advanced Materials | 1998

A dendritic nanocylinder - shape control through implementation of steric strain.

Wolfgang Stocker; Britta L. Schürmann; Jürgen P. Rabe; Stephan Förster; Peter Lindner; Ingo Neubert; A. Dieter Schlüter


Macromolecules | 1994

Direct observation of right and left helical hands of syndiotactic polypropylene by atomic force microscopy

Wolfgang Stocker; Martina Schumacher; Sabine Graff; J. Lang; Jean-Claude Wittmann; Andrew J. Lovinger; Bernard Lotz


Langmuir | 2000

Crossover between Dewetting and Stabilization of Ultrathin Liquid Crystalline Polymer Films

Armelle B. E. Vix; Peter Müller-Buschbaum; Wolfgang Stocker; Manfred Stamm; Jürgen P. Rabe


Macromolecules | 1998

Chain folding in liquid-crystalline main-chain polymers with a smectic phase

Armelle B. E. Vix; Wolfgang Stocker; Manfred Stamm; Götz Wilbert; Rudolf Zentel; Jürgen P. Rabe


Langmuir | 1998

Study of liquid crystal prewetting films by atomic force microscopy in tapping mode

S. Bardon; Marie Pierre Valignat; Anne Marie Cazabat; Wolfgang Stocker; Jürgen P. Rabe

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Bernard Lotz

Institut Charles Sadron

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Jean-Claude Wittmann

Centre national de la recherche scientifique

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Jürgen P. Rabe

Humboldt University of Berlin

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Sabine Graff

Institut Charles Sadron

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