A Self-Quenched Defect Glass in a Colloid-Nematic Liquid Crystal Composite
Colloidal particles immersed in liquid crystals frustrate orientational order. This generates defect lines known as disclinations. At the core of these defects, the orientational order drops sharply. We have discovered a class of soft solids, with shear moduli up to 10⁴ pascals, containing high conc...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2011-10, Vol.334 (6052), p.79-83 |
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| container_title | Science (American Association for the Advancement of Science) |
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| creator | Wood, T. A. Lintuvuori, J. S. Schofield, A. B. Marenduzzo, D. Poon, W. C. K. |
| description | Colloidal particles immersed in liquid crystals frustrate orientational order. This generates defect lines known as disclinations. At the core of these defects, the orientational order drops sharply. We have discovered a class of soft solids, with shear moduli up to 10⁴ pascals, containing high concentrations of colloidal particles (volume fraction Φ ≳ 20%) directly dispersed into a nematic liquid crystal. Confocal microscopy and computer simulations show that the mechanical strength derives from a percolated network of defect lines entangled with the particles in three dimensions. Such a "self-quenched glass" of defect lines and particles can be considered a self-organized analog of the "vortex glass" state in type II superconductors. |
| doi_str_mv | 10.1126/science.1209997 |
| format | Article |
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A. ; Lintuvuori, J. S. ; Schofield, A. B. ; Marenduzzo, D. ; Poon, W. C. K.</creator><creatorcontrib>Wood, T. A. ; Lintuvuori, J. S. ; Schofield, A. B. ; Marenduzzo, D. ; Poon, W. C. K.</creatorcontrib><description>Colloidal particles immersed in liquid crystals frustrate orientational order. This generates defect lines known as disclinations. At the core of these defects, the orientational order drops sharply. We have discovered a class of soft solids, with shear moduli up to 10⁴ pascals, containing high concentrations of colloidal particles (volume fraction Φ ≳ 20%) directly dispersed into a nematic liquid crystal. Confocal microscopy and computer simulations show that the mechanical strength derives from a percolated network of defect lines entangled with the particles in three dimensions. 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A.</creatorcontrib><creatorcontrib>Lintuvuori, J. S.</creatorcontrib><creatorcontrib>Schofield, A. B.</creatorcontrib><creatorcontrib>Marenduzzo, D.</creatorcontrib><creatorcontrib>Poon, W. C. K.</creatorcontrib><title>A Self-Quenched Defect Glass in a Colloid-Nematic Liquid Crystal Composite</title><title>Science (American Association for the Advancement of Science)</title><addtitle>Science</addtitle><description>Colloidal particles immersed in liquid crystals frustrate orientational order. This generates defect lines known as disclinations. At the core of these defects, the orientational order drops sharply. We have discovered a class of soft solids, with shear moduli up to 10⁴ pascals, containing high concentrations of colloidal particles (volume fraction Φ ≳ 20%) directly dispersed into a nematic liquid crystal. Confocal microscopy and computer simulations show that the mechanical strength derives from a percolated network of defect lines entangled with the particles in three dimensions. Such a "self-quenched glass" of defect lines and particles can be considered a self-organized analog of the "vortex glass" state in type II superconductors.</description><subject>Colloids</subject><subject>Composite particles</subject><subject>Condensed Matter</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Crystal defects</subject><subject>Exact sciences and technology</subject><subject>Gels</subject><subject>Glass</subject><subject>Kinetics</subject><subject>Liquid crystals</subject><subject>Liquids</subject><subject>Material concentration</subject><subject>Network access lines</subject><subject>Orientational order of liquid crystals; electric and magnetic field effects on order</subject><subject>Particulate composites</subject><subject>Physics</subject><subject>Quantum entanglement</subject><subject>Shear</subject><subject>Soft Condensed Matter</subject><subject>Structure of solids and liquids; crystallography</subject><subject>Superconductors</subject><subject>Three dimensional</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp90Utv1DAUBWALgei0sGYFyqYqLNLe60ccL0cDtKARCAFry_FDdeVMpnGC1H-PRxPaHStLPp-vbR1C3iBcItLmKtvod9ZfIgWllHxGVghK1IoCe05WAKypW5DihJzmfAdQMsVekhOKqgUEuSJf19VPn0L9Yy5zbr2rPvrg7VRdJ5NzFXeVqTZDSkN09Tffmynaahvv5-iqzfiQJ5NK3O-HHCf_irwIJmX_elnPyO_Pn35tburt9-svm_W2trzFqVamc46JRjDKOy6Z7FyLjWUCGuM6hZJ2wSrhAuUWuKSGBtFI1VrlOA_lS2fkw3HurUl6P8bejA96MFHfrLf6sAcoOAgq_mCxF0e7H4f72edJ9zFbn5LZ-WHOulVNy0DJg3z_X4mNRI6cU1Xo1ZHacch59OHxFQj6UIteatFLLeXEu2X43PXePfp_PRRwvgCTrUlhNDsb85PjQlGUh6vfHt1dnobxKWdQigXB_gIZK50L</recordid><startdate>20111007</startdate><enddate>20111007</enddate><creator>Wood, T. A.</creator><creator>Lintuvuori, J. S.</creator><creator>Schofield, A. B.</creator><creator>Marenduzzo, D.</creator><creator>Poon, W. C. K.</creator><general>American Association for the Advancement of Science</general><general>American Association for the Advancement of Science (AAAS)</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>7X8</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0003-4108-9550</orcidid></search><sort><creationdate>20111007</creationdate><title>A Self-Quenched Defect Glass in a Colloid-Nematic Liquid Crystal Composite</title><author>Wood, T. A. ; Lintuvuori, J. S. ; Schofield, A. B. ; Marenduzzo, D. ; Poon, W. C. K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c481t-9abdd3565324b4737bd816c3506adb9172bfc95df24c0472a2f56798c9d44f003</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Colloids</topic><topic>Composite particles</topic><topic>Condensed Matter</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Crystal defects</topic><topic>Exact sciences and technology</topic><topic>Gels</topic><topic>Glass</topic><topic>Kinetics</topic><topic>Liquid crystals</topic><topic>Liquids</topic><topic>Material concentration</topic><topic>Network access lines</topic><topic>Orientational order of liquid crystals; electric and magnetic field effects on order</topic><topic>Particulate composites</topic><topic>Physics</topic><topic>Quantum entanglement</topic><topic>Shear</topic><topic>Soft Condensed Matter</topic><topic>Structure of solids and liquids; crystallography</topic><topic>Superconductors</topic><topic>Three dimensional</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wood, T. A.</creatorcontrib><creatorcontrib>Lintuvuori, J. S.</creatorcontrib><creatorcontrib>Schofield, A. B.</creatorcontrib><creatorcontrib>Marenduzzo, D.</creatorcontrib><creatorcontrib>Poon, W. C. K.</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Science (American Association for the Advancement of Science)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wood, T. A.</au><au>Lintuvuori, J. S.</au><au>Schofield, A. B.</au><au>Marenduzzo, D.</au><au>Poon, W. C. K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Self-Quenched Defect Glass in a Colloid-Nematic Liquid Crystal Composite</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>2011-10-07</date><risdate>2011</risdate><volume>334</volume><issue>6052</issue><spage>79</spage><epage>83</epage><pages>79-83</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>Colloidal particles immersed in liquid crystals frustrate orientational order. This generates defect lines known as disclinations. At the core of these defects, the orientational order drops sharply. We have discovered a class of soft solids, with shear moduli up to 10⁴ pascals, containing high concentrations of colloidal particles (volume fraction Φ ≳ 20%) directly dispersed into a nematic liquid crystal. 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| source | American Association for the Advancement of Science; Jstor Complete Legacy |
| subjects | Colloids Composite particles Condensed Matter Condensed matter: structure, mechanical and thermal properties Crystal defects Exact sciences and technology Gels Glass Kinetics Liquid crystals Liquids Material concentration Network access lines Orientational order of liquid crystals electric and magnetic field effects on order Particulate composites Physics Quantum entanglement Shear Soft Condensed Matter Structure of solids and liquids crystallography Superconductors Three dimensional |
| title | A Self-Quenched Defect Glass in a Colloid-Nematic Liquid Crystal Composite |
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