Forschungsschwerpunkt "Nanostrukturierte Materialien"

Dr. Jan Lagerwall

Kontakt:

	Tel:	~345-5525-836
	Fax:	~345-5527-400
	Email:	jan.lagerwall@~remove.these.four.words~chemie.uni-halle.de
	Web:	http://phys.chemie.uni-halle.de/Lagerwall/

Geförderte Projekte im Exzellenzcluster (07/2005-06/2008)

Flüssigkristalle (01.07.2007-31.12.2009) (LC)
- Liquid Crystals and Nanocomposites (01.07.2007-31.12.2009)

Arbeitsgebiete

Komposite aus Kohlenstoffnanoröhrchen oder Fullerene in lyo- bzw. thermotropen Flüssigkristallen,
Electrospinning von Polymerfasern mit flüssigkristallinen Komponenten,
Flüssigkristalline Kolloidteilchen in isotropen Lösungsmitteln,
Morphologieänderungen flüssigkristalliner geschlossener Membranstrukturen (Vesikeln) und ihre Beziehung zu Phasenveränderungen,
Chiralitätseffekte in thermo- und lyotropen Flüssigkristallen,
die Rolle der Molekül-Orientierungsordnung in smektischen Flüssigkristallphasen (´de Vries smectics‘).

Publikationen

Jan P. F. Lagerwall, Giusy Scalia, Miroslav Haluska, Ursula Dettlaff-Weglikowska, Siegmar Roth, Frank Giesselmann, "Nanotube Alignment Using Lyotropic Liquid Crystals", Adv. Mater. 19 (3) 359-364 (2007)
Jan P. F. Lagerwall, Giusy Scalia, Miroslav Haluska, Ursula Dettlaff-Weglikowska, Frank Giesselmann, Siegmar Roth, "Simultaneous alignment and dispersion of carbon nanotubes with lyotropic liquid crystals", Phys. Stat. Sol. (b) 243 (13) 3046-3049 (2006)
Jan P. F. Lagerwall, Frank Giesselmann, "Current Topics in Smectic Liquid Crystal Research (Review article)", ChemPhysChem 7 (1) 20-45 (2006)
Jan P. F. Lagerwall, "Demonstration of the antiferroelectric aspect of the helical superstructures in SmC*, SmCα*, and SmCa* liquid crystals", Phys. Rev. E 71 051703 (2005)
Jan P. F. Lagerwall, G. Heppke, F. Giesselmann, "Frustration between syn- and anticlinicity in mixtures of chiral and non-chiral tilted smectic-C-type liquid crystals", Eur. Phys. J. E 18 (1) 113-121 (2005)
Jan P. F. Lagerwall, Frank Giesselmann, Michael D. Wand, David M. Walba, "A Chameleon Chiral Polar Liquid Crystal: Rod-Shaped When Nematic, Bent-Shaped When Smectic", Chem. Mater 16 (19) 3606-3615 (2004)
Jan P. F. Lagerwall, Alexander A. Kane, Noel A. Clark, David M. Walba, "Polarity-directed analog electro-optic switching in a low-polarization chiral smectic liquid crystal with positive dielectric anisotropy", Phys. Rev. E, 70, 031703 (2004)
Jan P. F. Lagerwall, Per Rudquist, Sven T. Lagerwall, Frank Giesselmann, "On the phase sequence of antiferroelectric liquid crystals and its relation to orientational and translational order", Liq. Cryst. 30 (4) 399-414 (2003)
Jan P. F. Lagerwall, Frank Giesselmann, Marc D. Radcliffe, "Optical and x-ray evidence of the "de Vries" Sm-A*-Sm-C* transition in a non-layer-shrinkage ferroelectric liquid crystal with very weak interlayer tilt correlation", Phys. Rev. E 66 031703 (2002)