prost, de gennes, the physics of liquid crystals chandrasekhar, liquid crystals vertogen, de jeu,...

Oettel/Auernhammer, "Soft Matter"

Textbooks

• Prost, de Gennes, “The physics of liquid crystals”

• Chandrasekhar, “Liquid crystals”

• Vertogen, de Jeu, “Thermotropic liquid crystals, Fundamentals”

• Chaikin, Lubensky, “Principles of condensed matter physics”

• P. Oswald, P. Pieranski, “Nematic and cholesteric liquid crystals”

• and many, many more …

04/20/2010

Oettel/Auernhammer, "Soft Matter"

http://www.lci.kent.edu/information.html

http://www.lci.kent.edu

http://liqcryst.chemie.uni-hamburg.de/

http://plc.cwru.edu/tutorial/enhanced/main.htm

http://bly.colorado.edu/images.html

Some useful internet resources

Liquid crystal groups with good web pages

Virtual text book

… and many more

04/20/2010

Historical remarks

1888 Reinitzer (Cholesterolbenzoat)

1889 Lehmann: “Über fliessende Krystalle”

Monatshefte für Chemie (Wien) 9, 421–41 (1888)

Zeitschrift für physikalische Chemie 4, 462 – 472.04/20/2010 Oettel/Auernhammer, "Soft Matter"

Oettel/Auernhammer, "Soft Matter"

Nematics

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Oettel/Auernhammer, "Soft Matter"

Microscopic definition

Distribution function, f(q)

Director

N N

n

Higher order

Lower order

p0

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Oettel/Auernhammer, "Soft Matter"

Magnetic susceptinility[V

erto

gen, d

e Je

u, “T

herm

otro

pic liq

uid

cry

stals,

Fun

dam

enta

ls”, p. 1

75]

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Oettel/Auernhammer, "Soft Matter"

Schlieren Texture

[O. Lavrentovich, Kent]

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Oettel/Auernhammer, "Soft Matter"

Nematics

[O. Lavrentovich, LCI, Kent]

[Demus, Richter “Textures of Liquid Crystals” p. 33]

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Oettel/Auernhammer, "Soft Matter"

Defects in nematics II

P.E. Cladis, H.R. Brand Physica A 326 (2003) 322 – 332

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Oettel/Auernhammer, "Soft Matter"

Homologue series, nematics

[Vertogen, de Jeu, “Thermotropic liquid crystals, Fundamentals”, p. 21]04/20/2010

Oettel/Auernhammer, "Soft Matter"

Thread texture

J. Chem. Soc., Faraday Trans. 2, 1972, 68, 1 - 15,

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Oettel/Auernhammer, "Soft Matter"

Cholesteric lcs, chiral nematics

[Chandrasekhar, “Liquid crystals”, p. 5]

[Coates, Gray, Mol. Cryst. Liq. Cryst., 24, 163 (1973)

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Cholesteric lcs, chiral nematics

http://bly.colorado.edu/lcphysics/textures/#Ch

[Vertogen, de Jeu, “Thermotropic liquid crystals, Fundamentals”, p. 27]

Oettel/Auernhammer, "Soft Matter"

Oettel/Auernhammer, "Soft Matter"

Focal conics

[M. E. Neubert, Kent] http://liqcryst.chemie.uni-hamburg.de/lcionline/

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Smectic A

[M. E. Neubert, LCI, Kent]

[Vertogen, de Jeu, “Thermotropic liquid crystals, Fundamentals”, p. 34]Oettel/Auernhammer, "Soft Matter"

Oettel/Auernhammer, "Soft Matter"

Differential scanning calorimetry

http://plc.cwru.edu/tutorial/enhanced/files/lc/phase/phase.htm

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Oettel/Auernhammer, "Soft Matter"

X-ray scattering

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Oettel/Auernhammer, "Soft Matter"

X-ray scattering

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[ S. Krause, Diss, 2008, Uni Freiburg]

Oettel/Auernhammer, "Soft Matter"

Comparing different methods

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Oettel/Auernhammer, "Soft Matter"

Modern applications (biomedical)

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Oettel/Auernhammer, "Soft Matter"

Modern applications (model systems)

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Oettel/Auernhammer, "Soft Matter"04/20/2010

Smectic … (e.g. Cxx, B7)

[ Antal Jakli, LCI, Kent]

Oettel/Auernhammer, "Soft Matter"04/20/2010

Columnar phases

[Chaikin, Lubensky, “Principles of condensed matter physics”, p.71]

Oettel/Auernhammer, "Soft Matter"04/20/2010

Lyotropic liquid crystals

[Chaikin, Lubensky, “Principles of condensed matter physics”, p.73]

Oettel/Auernhammer, "Soft Matter"04/20/2010

Lyotropic liquid crystals

[Chaikin, Lubensky, “Principles of condensed matter physics”, p.74]

Oettel/Auernhammer, "Soft Matter"04/20/2010

Blockcopolymers

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Blockcopolymers

Oettel/Auernhammer, "Soft Matter"

Oettel/Auernhammer, "Soft Matter"

Liquid crystalline elastomers

04/20/2010