Searching for disclination : 14 results found | RSS Feed for this search

1

Disclinations in a smectic LCP, revealed by decoration

Description

Detailed configurations of disclinations and their interactions have been elucidated by band texture decoration. The positive value of elastic anisotropy of a semi-flexible LCP, Cl-6, shows that bend distortion is favoured. The obvious variations of elastic anisotropy values measured from the different disclinations is probably related to the polydispersity of the polymer. The majority of disclination pairs showing random configurations indicate that that defect interactions are far from equilibrium in polymeric smectics.

Subjects

alignment | decoration | disclination | dislocation | liquid crystalline polymer (LCP) | polymer | smectic | spontaneous band texture | texture | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Disclinations in a smectic LCP, revealed by decoration

Description

Detailed configurations of disclinations and their interactions have been elucidated by band texture decoration. The positive value of elastic anisotropy of a semi-flexible LCP, Cl-6, shows that bend distortion is favoured. The obvious variations of elastic anisotropy values measured from the different disclinations is probably related to the polydispersity of the polymer. The majority of disclination pairs showing random configurations indicate that that defect interactions are far from equilibrium in polymeric smectics.

Subjects

alignment | decoration | disclination | dislocation | liquid crystalline polymer (LCP) | polymer | smectic | spontaneous band texture | texture | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Interactive model of an S = 1 line disclination (capillary tube)

Description

Interactive, rotatable model of an S = 1 disinclination (as in a capillary tube). From TLP: Liquid Crystals, http://www.doitpoms.ac.uk/tlplib/liquid_crystals/defects.php

Subjects

liquid crystals | line disclination | doitpoms | university of cambridge | video | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Interactive model of an S = 1 point disclination (spherical drop)

Description

Interactive, rotatable image of an S = 1 disinclination (as in a spherical drop). From TLP: Liquid Crystals, http://www.doitpoms.ac.uk/tlplib/liquid_crystals/defects.php

Subjects

liquid crystals | point disclination | doitpoms | university of cambridge | video | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Interactive model of an S = -1 line disclination (capillary tube)

Description

Interactive, rotatable image of an S = -1 disinclination (as in a capillary tube). From TLP: Liquid Crystals, http://www.doitpoms.ac.uk/tlplib/liquid_crystals/defects.php

Subjects

liquid crystals | line disclination | doitpoms | university of cambridge | video | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Interactive model of an S = -1 point disclination (spherical drop)

Description

Interactive, rotatable image of an S = -1 disinclination (as in a spherical drop). From TLP: Liquid Crystals, http://www.doitpoms.ac.uk/tlplib/liquid_crystals/defects.php

Subjects

liquid crystals | point disclination | doitpoms | university of cambridge | video | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Nematic liquid crystalline polymer

Description

Liquid crystalline polymers (LCPs) exhibit a mesophase above their melting temperature. In this phase, they are fluid yet they retain long-range orientational order. The self-alignment of crystallites manifests itself as patterns of optical birefringence when the liquids are viewed between crossed polars. Defects in the patterns are analogous to dislocations in crystal systems. This specimen is K24 (4-cyano-4'-8-alkylbiphenyl), which is nematic above 35 degrees C. The general gradation of colour is simply due to a wedge plate placed over the specimen.

Subjects

alignment | birefringence | disclination | liquid crystalline polymer (lcp) | polymer | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Disclinations in a smectic LCP, revealed by decoration

Description

Detailed configurations of disclinations and their interactions have been elucidated by band texture decoration. The positive value of elastic anisotropy of a semi-flexible LCP, Cl-6, shows that bend distortion is favoured. The obvious variations of elastic anisotropy values measured from the different disclinations is probably related to the polydispersity of the polymer. The majority of disclination pairs showing random configurations indicate that that defect interactions are far from equilibrium in polymeric smectics.

Subjects

alignment | decoration | disclination | dislocation | liquid crystalline polymer (lcp) | polymer | smectic | spontaneous band texture | texture | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Disclinations in a smectic LCP, revealed by decoration

Description

Detailed configurations of disclinations and their interactions have been elucidated by band texture decoration. The positive value of elastic anisotropy of a semi-flexible LCP, Cl-6, shows that bend distortion is favoured. The obvious variations of elastic anisotropy values measured from the different disclinations is probably related to the polydispersity of the polymer. The majority of disclination pairs showing random configurations indicate that that defect interactions are far from equilibrium in polymeric smectics.

Subjects

alignment | decoration | disclination | dislocation | liquid crystalline polymer (lcp) | polymer | smectic | spontaneous band texture | texture | doitpoms | university of cambridge | micrograph | corematerials | ukoer | Engineering | H000

License

Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales Attribution-Noncommercial-Share Alike 2.0 UK: England & Wales http://creativecommons.org/licenses/by-nc-sa/2.0/uk/ http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://dspace.jorum.ac.uk/oai/request?verb=ListRecords&metadataPrefix=oai_dc

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Interactive model of an S = 1 line disclination (capillary tube)

Description

Interactive, rotatable model of an S = 1 disinclination (as in a capillary tube). From TLP: Liquid Crystals, http://www.doitpoms.ac.uk/tlplib/liquid_crystals/defects.php

Subjects

liquid crystals | line disclination | DoITPoMS | University of Cambridge | video | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_videos.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Interactive model of an S = 1 point disclination (spherical drop)

Description

Interactive, rotatable image of an S = 1 disinclination (as in a spherical drop). From TLP: Liquid Crystals, http://www.doitpoms.ac.uk/tlplib/liquid_crystals/defects.php

Subjects

liquid crystals | point disclination | DoITPoMS | University of Cambridge | video | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_videos.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Interactive model of an S = -1 line disclination (capillary tube)

Description

Interactive, rotatable image of an S = -1 disinclination (as in a capillary tube). From TLP: Liquid Crystals, http://www.doitpoms.ac.uk/tlplib/liquid_crystals/defects.php

Subjects

liquid crystals | line disclination | DoITPoMS | University of Cambridge | video | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_videos.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Interactive model of an S = -1 point disclination (spherical drop)

Description

Interactive, rotatable image of an S = -1 disinclination (as in a spherical drop). From TLP: Liquid Crystals, http://www.doitpoms.ac.uk/tlplib/liquid_crystals/defects.php

Subjects

liquid crystals | point disclination | DoITPoMS | University of Cambridge | video | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_videos.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata

Nematic liquid crystalline polymer

Description

Liquid crystalline polymers (LCPs) exhibit a mesophase above their melting temperature. In this phase, they are fluid yet they retain long-range orientational order. The self-alignment of crystallites manifests itself as patterns of optical birefringence when the liquids are viewed between crossed polars. Defects in the patterns are analogous to dislocations in crystal systems. This specimen is K24 (4-cyano-4'-8-alkylbiphenyl), which is nematic above 35 degrees C. The general gradation of colour is simply due to a wedge plate placed over the specimen.

Subjects

alignment | birefringence | disclination | liquid crystalline polymer (LCP) | polymer | DoITPoMS | University of Cambridge | micrograph | corematerials | ukoer

License

http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Site sourced from

http://core.materials.ac.uk/rss/doitpoms_images.xml

Attribution

Click to get HTML | Click to get attribution | Click to get URL

All metadata

See all metadata