skip to content
Covid-19 virus
COVID-19 Resources

Reliable information about the coronavirus (COVID-19) is available from the World Health Organization (current situation, international travel). Numerous and frequently-updated resource results are available from this WorldCat.org search. OCLC’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus issues in their communities.

Image provided by: CDC/ Alissa Eckert, MS; Dan Higgins, MAM
Topological formations in chiral nematic droplets Preview this item
ClosePreview this item
Checking...

Topological formations in chiral nematic droplets

Author: Gregor Posnjak
Publisher: Cham, Switzerland : Springer, 2018.
Series: Springer theses
Edition/Format:   eBook : Document : EnglishView all editions and formats
Summary:
In this book Gregor Posnjak unravels the long-standing mystery of the internal director structure of chiral nematic droplets, which has been studied both experimentally and theoretically since the 1970s. To do so, he develops a new method for the reconstruction of director fields from a set of fluorescent confocal polarising microscopy images, which he augments with a simulated annealing algorithm. This allows the  Read more...
Rating:

(not yet rated) 0 with reviews - Be the first.

Subjects
More like this

Find a copy online

Find a copy in the library

&AllPage.SpinnerRetrieving; Finding libraries that hold this item...

Details

Genre/Form: Electronic books
Additional Physical Format: Print version:
Posnjak, Gregor.
Topological formations in chiral nematic droplets.
Cham, Switzerland : Springer, 2018
(OCoLC)1044823042
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Gregor Posnjak
ISBN: 9783319982618 3319982613 9783319982625 3319982621
OCLC Number: 1052124322
Notes: "Doctoral thesis accepted by the University of Ljubljana, Ljubljana, Slovenia."
Description: 1 online resource (xiii, 186 pages) : illustrations (some color)
Contents: Intro; Supervisor's Foreword; Acknowledgments; Abstract; Contents; 1 Introduction; References; 2 Liquid Crystals-An Overview; 2.1 Nematic Order; 2.2 Chiral Nematics; 2.3 Free Energy Expansion; 2.4 Anchoring; 2.5 Topological Defects in Nematics; 2.5.1 Topological Defects in Two Dimensions; 2.5.2 Three-Dimensional Topological Defects; 2.5.3 Topological Defects in Chiral Nematics; 2.6 Optics of Liquid Crystals; 2.6.1 Optics of Chiral Nematic Liquid Crystals; References; 3 Liquid Crystal Droplets; 3.1 Chiral Nematic Droplets; 3.2 Chiral Nematic Droplets with Homeotropic Anchoring; References. 4 Experimental Inspection of Director Fields4.1 Confocal Microscopy; 4.2 Fluorescent Confocal Polarising Microscopy; References; 5 Materials and Experimental Setup; 5.1 Materials; 5.1.1 Liquid Crystal Mixture; 5.1.2 Emulsion Matrix; 5.1.3 Fluorescent Dye; 5.1.4 Sample Preparation; 5.2 Microscopy Setup; 5.2.1 Numerical Processing of Data and Visualisation; References; 6 Simulated Annealing for Determination of z-Component Sign; 6.1 Testing the Algorithm; 6.1.1 Continuity as the Evaluating Criterion in the Boltzmann Factor; 6.1.2 Boltzmann Factor with Landau-de Gennes Free Energy. 6.2 Implementing the Simulated Annealing Algorithm on Experimental Data6.2.1 Bleaching Corrections; 6.2.2 Deconvolution; 6.2.3 Offset Correction and Normalisation; 6.3 Calibration of the Annealing Algorithm on Experimental Data; 6.3.1 Nematic Homeotropic Droplet; 6.3.2 Chiral Nematic Droplet with a Complex Director Structure; 6.3.3 Skyrmions and Torons in Homeotropic Cells; References; 7 Structures in Chiral Nematic Droplets with Homeotropic Anchoring; 7.1 Droplet with a Single Point Defect and a Cholesteric Bubble; 7.2 Droplets with Layered Structures; 7.2.1 Droplets with Bent Layers. 7.2.2 Droplets with Flat Layers7.2.3 Cylindrical Layers; 7.2.4 Cholesteric Finger with a Central Hyperbolic Point Defect; 7.2.5 The Lyre/Yeti Structure; 7.2.6 Droplets with Disclination Lines; 7.2.7 Combinations of Cholesteric Bubbles and Cholesteric Cylinders; 7.3 Strings of Point Defects; 7.4 Higher-Charge Topological Point Defects; 7.4.1 -2 Point Defect; 7.4.2 -3 Point Defect; 7.4.3 Structure of the Higher-Charge Point Defects; 7.5 Topological Molecules; 7.5.1 Topological Molecules with Higher-Charge Defects; 7.5.2 Topological Molecules with Disclination Lines. 7.5.3 Other Topological MoleculesReferences; 8 Schematic Construction of Droplets with Multiple Cholesteric Bubbles; 8.1 Construction of String-Like Constellations; 8.2 Construction of Topological Molecules with Higher-Charge Point Defects; Reference; 9 Discussion; References; 10 Conclusion; References.
Series Title: Springer theses
Responsibility: Gregor Posnjak.

Abstract:

In this book Gregor Posnjak unravels the long-standing mystery of the internal director structure of chiral nematic droplets, which has been studied both experimentally and theoretically since the  Read more...

Reviews

User-contributed reviews
Retrieving GoodReads reviews...
Retrieving DOGObooks reviews...

Tags

Be the first.
Confirm this request

You may have already requested this item. Please select Ok if you would like to proceed with this request anyway.

Linked Data


\n\n

Primary Entity<\/h3>\n
<http:\/\/www.worldcat.org\/oclc\/1052124322<\/a>> # Topological formations in chiral nematic droplets<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Book<\/a>, schema:CreativeWork<\/a>, schema:MediaObject<\/a> ;\u00A0\u00A0\u00A0\nlibrary:oclcnum<\/a> \"1052124322<\/span>\" ;\u00A0\u00A0\u00A0\nlibrary:placeOfPublication<\/a> <http:\/\/id.loc.gov\/vocabulary\/countries\/sz<\/a>> ;\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/condensed_matter_physics_liquid_state_&_solid_state_physics<\/a>> ; # Condensed matter physics (liquid state & solid state physics)<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/dewey.info\/class\/530.429\/e23\/<\/a>> ;\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/science_physics_general<\/a>> ; # SCIENCE--Physics--General<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/science_energy<\/a>> ; # SCIENCE--Energy<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/materials_states_of_matter<\/a>> ; # Materials--States of matter<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/nematic_liquid_crystals<\/a>> ; # Nematic liquid crystals<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/electronic_devices_&_materials<\/a>> ; # Electronic devices & materials<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/science_mechanics_general<\/a>> ; # SCIENCE--Mechanics--General<\/span>\n\u00A0\u00A0\u00A0\nschema:author<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Person\/posnjak_gregor<\/a>> ; # Gregor Posnjak<\/span>\n\u00A0\u00A0\u00A0\nschema:bookFormat<\/a> schema:EBook<\/a> ;\u00A0\u00A0\u00A0\nschema:datePublished<\/a> \"2018<\/span>\" ;\u00A0\u00A0\u00A0\nschema:description<\/a> \"Intro; Supervisor\'s Foreword; Acknowledgments; Abstract; Contents; 1 Introduction; References; 2 Liquid Crystals-An Overview; 2.1 Nematic Order; 2.2 Chiral Nematics; 2.3 Free Energy Expansion; 2.4 Anchoring; 2.5 Topological Defects in Nematics; 2.5.1 Topological Defects in Two Dimensions; 2.5.2 Three-Dimensional Topological Defects; 2.5.3 Topological Defects in Chiral Nematics; 2.6 Optics of Liquid Crystals; 2.6.1 Optics of Chiral Nematic Liquid Crystals; References; 3 Liquid Crystal Droplets; 3.1 Chiral Nematic Droplets; 3.2 Chiral Nematic Droplets with Homeotropic Anchoring; References.<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\nschema:description<\/a> \"In this book Gregor Posnjak unravels the long-standing mystery of the internal director structure of chiral nematic droplets, which has been studied both experimentally and theoretically since the 1970s. To do so, he develops a new method for the reconstruction of director fields from a set of fluorescent confocal polarising microscopy images, which he augments with a simulated annealing algorithm. This allows the full reconstruction of 3D director fields, describing the ordering of the liquid crystal. The reconstruction procedure and its principles, which are applicable to other methods of studying vector fields, are explained in detail. The method is subsequently used to explore complex 3D structures in chiral nematic liquid crystal droplets with perpendicular surface anchoring. Twentyfour distinct states are identified and presented, including the layered structures of different symmetries and states with multiple topological point defects, separated by localized chiral structures. In closing, the book reports on the first observation of topological point defects with higher topological charges q = \u22122 and q = \u22123. .<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\nschema:exampleOfWork<\/a> <http:\/\/worldcat.org\/entity\/work\/id\/4528742677<\/a>> ;\u00A0\u00A0\u00A0\nschema:genre<\/a> \"Electronic books<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\nschema:inLanguage<\/a> \"en<\/span>\" ;\u00A0\u00A0\u00A0\nschema:isPartOf<\/a> <http:\/\/worldcat.org\/issn\/2190-5053<\/a>> ; # Springer theses,<\/span>\n\u00A0\u00A0\u00A0\nschema:isSimilarTo<\/a> <http:\/\/www.worldcat.org\/oclc\/1044823042<\/a>> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Topological formations in chiral nematic droplets<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\nschema:productID<\/a> \"1052124322<\/span>\" ;\u00A0\u00A0\u00A0\nschema:url<\/a> <https:\/\/search.ebscohost.com\/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=1886912<\/a>> ;\u00A0\u00A0\u00A0\nschema:url<\/a> <http:\/\/www.vlebooks.com\/vleweb\/product\/openreader?id=none&isbn=9783319982618<\/a>> ;\u00A0\u00A0\u00A0\nschema:url<\/a> <https:\/\/public.ebookcentral.proquest.com\/choice\/publicfullrecord.aspx?p=5510211<\/a>> ;\u00A0\u00A0\u00A0\nschema:url<\/a> <https:\/\/doi.org\/10.1007\/978-3-319-98261-8<\/a>> ;\u00A0\u00A0\u00A0\nschema:url<\/a> <https:\/\/link.springer.com\/book\/10.1007\/978-3-319-98260-1<\/a>> ;\u00A0\u00A0\u00A0\nschema:url<\/a> <https:\/\/link.springer.com\/book\/10.1007%2F978-3-319-98261-8<\/a>> ;\u00A0\u00A0\u00A0\nschema:url<\/a> <https:\/\/link.springer.com\/book\/10.1007\/978-3-319-98261-8<\/a>> ;\u00A0\u00A0\u00A0\nschema:workExample<\/a> <http:\/\/worldcat.org\/isbn\/9783319982625<\/a>> ;\u00A0\u00A0\u00A0\nschema:workExample<\/a> <http:\/\/worldcat.org\/isbn\/9783319982618<\/a>> ;\u00A0\u00A0\u00A0\nschema:workExample<\/a> <http:\/\/dx.doi.org\/10.1007\/978-3-319-98261-8<\/a>> ;\u00A0\u00A0\u00A0\numbel:isLike<\/a> <http:\/\/bnb.data.bl.uk\/id\/resource\/GBB901479<\/a>> ;\u00A0\u00A0\u00A0\nwdrs:describedby<\/a> <http:\/\/www.worldcat.org\/title\/-\/oclc\/1052124322<\/a>> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n\n

Related Entities<\/h3>\n
<http:\/\/dewey.info\/class\/530.429\/e23\/<\/a>>\u00A0\u00A0\u00A0\u00A0a \nschema:Intangible<\/a> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/dx.doi.org\/10.1007\/978-3-319-98261-8<\/a>>\u00A0\u00A0\u00A0\u00A0a \nschema:IndividualProduct<\/a> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Person\/posnjak_gregor<\/a>> # Gregor Posnjak<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Person<\/a> ;\u00A0\u00A0\u00A0\nschema:familyName<\/a> \"Posnjak<\/span>\" ;\u00A0\u00A0\u00A0\nschema:givenName<\/a> \"Gregor<\/span>\" ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Gregor Posnjak<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/condensed_matter_physics_liquid_state_&_solid_state_physics<\/a>> # Condensed matter physics (liquid state & solid state physics)<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Intangible<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Condensed matter physics (liquid state & solid state physics)<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/electronic_devices_&_materials<\/a>> # Electronic devices & materials<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Intangible<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Electronic devices & materials<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/materials_states_of_matter<\/a>> # Materials--States of matter<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Intangible<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Materials--States of matter<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/nematic_liquid_crystals<\/a>> # Nematic liquid crystals<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Intangible<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Nematic liquid crystals<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/science_energy<\/a>> # SCIENCE--Energy<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Intangible<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"SCIENCE--Energy<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/science_mechanics_general<\/a>> # SCIENCE--Mechanics--General<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Intangible<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"SCIENCE--Mechanics--General<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/4528742677#Topic\/science_physics_general<\/a>> # SCIENCE--Physics--General<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Intangible<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"SCIENCE--Physics--General<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/id.loc.gov\/vocabulary\/countries\/sz<\/a>>\u00A0\u00A0\u00A0\u00A0a \nschema:Place<\/a> ;\u00A0\u00A0\u00A0\ndcterms:identifier<\/a> \"sz<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/worldcat.org\/isbn\/9783319982618<\/a>>\u00A0\u00A0\u00A0\u00A0a \nschema:ProductModel<\/a> ;\u00A0\u00A0\u00A0\nschema:isbn<\/a> \"3319982613<\/span>\" ;\u00A0\u00A0\u00A0\nschema:isbn<\/a> \"9783319982618<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/worldcat.org\/isbn\/9783319982625<\/a>>\u00A0\u00A0\u00A0\u00A0a \nschema:ProductModel<\/a> ;\u00A0\u00A0\u00A0\nschema:isbn<\/a> \"3319982621<\/span>\" ;\u00A0\u00A0\u00A0\nschema:isbn<\/a> \"9783319982625<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/worldcat.org\/issn\/2190-5053<\/a>> # Springer theses,<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nbgn:PublicationSeries<\/a> ;\u00A0\u00A0\u00A0\nschema:hasPart<\/a> <http:\/\/www.worldcat.org\/oclc\/1052124322<\/a>> ; # Topological formations in chiral nematic droplets<\/span>\n\u00A0\u00A0\u00A0\nschema:issn<\/a> \"2190-5053<\/span>\" ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Springer theses,<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/www.worldcat.org\/oclc\/1044823042<\/a>>\u00A0\u00A0\u00A0\u00A0a \nschema:CreativeWork<\/a> ;\u00A0\u00A0\u00A0\nrdfs:label<\/a> \"Topological formations in chiral nematic droplets.<\/span>\" ;\u00A0\u00A0\u00A0\nschema:description<\/a> \"Print version:<\/span>\" ;\u00A0\u00A0\u00A0\nschema:isSimilarTo<\/a> <http:\/\/www.worldcat.org\/oclc\/1052124322<\/a>> ; # Topological formations in chiral nematic droplets<\/span>\n\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n