Radial Poiseuille Flow of a Homeotropic Nematic LC Layer

Radial Poiseuille Flow of a Homeotropic Nematic LC Layer

A two-dimensional Poiseuille flow in a radial direction allows to study simultaneously a whole range of flow rates. Three different deformation modes of the director field have been observed, the 'bow' mode, the 'screw' mode, and the 'peak' mode. Above a critical flow r...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Zeitschrift für Naturforschung. A, A journal of physical sciences A journal of physical sciences, 1976-07, Vol.31 (7), p.800-807
Hauptverfasser: Hiltrop, Karl, Fischer, Fred
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 807
container_issue 7
container_start_page 800
container_title Zeitschrift für Naturforschung. A, A journal of physical sciences
container_volume 31
creator Hiltrop, Karl
Fischer, Fred
description A two-dimensional Poiseuille flow in a radial direction allows to study simultaneously a whole range of flow rates. Three different deformation modes of the director field have been observed, the 'bow' mode, the 'screw' mode, and the 'peak' mode. Above a critical flow rate the bow mode transforms into the screw mode. Right and left screw mode can be produced side by side. The peak mode reached by temporary high flow rates is metastable at low flow rates. Quantitative results are reported and discussed. By reversing the flow direction in the screw mode region the left screw mode is transformed into the right screw mode and vice versa. By reversing the flow direction in the peak mode region special tube-like deformation structures are obtained. Each open tube has a point disclination at either end. Both are of opposite strength ± 1.
doi_str_mv 10.1515/zna-1976-0721
format Article
fullrecord <record><control><sourceid>walterdegruyter_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1515_zna_1976_0721</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>10_1515_zna_1976_0721317800</sourcerecordid><originalsourceid>FETCH-LOGICAL-c328t-1341802dd2e39713cbdf22ca251b9a43bcb9f9006ab207660def4908ce8b0cef3</originalsourceid><addsrcrecordid>eNp1kEFLAzEQhYMoWKtH7_kD0Zlkd5PgSYq1wqIieg7ZbCJbtk3JbinrrzelXj29x_DmMd8QcotwhyWW9z9by1DLioHkeEZmqKqSSQR9TmagBc9zVVySq2FYA4iqlMWMqA_bdran77Eb_L7re0-XfTzQGKilq7jxcUxx1zn66jd2zFovaG0nn67JRbD94G_-dE6-lk-fixWr355fFo81c4KrkaEoUAFvW-6Flihc0wbOneUlNtoWonGNDhqgsg0HWVXQ-lBoUM6rBpwPYk7YqdelOAzJB7NL3camySCYI7bJ2OaIbY7YOf9wyh9sP_rU-u-0n7Ix67hP23zpP3soVX7KL-OoXdY</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Radial Poiseuille Flow of a Homeotropic Nematic LC Layer</title><source>Alma/SFX Local Collection</source><creator>Hiltrop, Karl ; Fischer, Fred</creator><creatorcontrib>Hiltrop, Karl ; Fischer, Fred</creatorcontrib><description>A two-dimensional Poiseuille flow in a radial direction allows to study simultaneously a whole range of flow rates. Three different deformation modes of the director field have been observed, the 'bow' mode, the 'screw' mode, and the 'peak' mode. Above a critical flow rate the bow mode transforms into the screw mode. Right and left screw mode can be produced side by side. The peak mode reached by temporary high flow rates is metastable at low flow rates. Quantitative results are reported and discussed. By reversing the flow direction in the screw mode region the left screw mode is transformed into the right screw mode and vice versa. By reversing the flow direction in the peak mode region special tube-like deformation structures are obtained. Each open tube has a point disclination at either end. Both are of opposite strength ± 1.</description><identifier>ISSN: 0932-0784</identifier><identifier>EISSN: 1865-7109</identifier><identifier>DOI: 10.1515/zna-1976-0721</identifier><language>eng</language><publisher>Verlag der Zeitschrift für Naturforschung</publisher><ispartof>Zeitschrift für Naturforschung. A, A journal of physical sciences, 1976-07, Vol.31 (7), p.800-807</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c328t-1341802dd2e39713cbdf22ca251b9a43bcb9f9006ab207660def4908ce8b0cef3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27923,27924</link.rule.ids></links><search><creatorcontrib>Hiltrop, Karl</creatorcontrib><creatorcontrib>Fischer, Fred</creatorcontrib><title>Radial Poiseuille Flow of a Homeotropic Nematic LC Layer</title><title>Zeitschrift für Naturforschung. A, A journal of physical sciences</title><description>A two-dimensional Poiseuille flow in a radial direction allows to study simultaneously a whole range of flow rates. Three different deformation modes of the director field have been observed, the 'bow' mode, the 'screw' mode, and the 'peak' mode. Above a critical flow rate the bow mode transforms into the screw mode. Right and left screw mode can be produced side by side. The peak mode reached by temporary high flow rates is metastable at low flow rates. Quantitative results are reported and discussed. By reversing the flow direction in the screw mode region the left screw mode is transformed into the right screw mode and vice versa. By reversing the flow direction in the peak mode region special tube-like deformation structures are obtained. Each open tube has a point disclination at either end. Both are of opposite strength ± 1.</description><issn>0932-0784</issn><issn>1865-7109</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1976</creationdate><recordtype>article</recordtype><recordid>eNp1kEFLAzEQhYMoWKtH7_kD0Zlkd5PgSYq1wqIieg7ZbCJbtk3JbinrrzelXj29x_DmMd8QcotwhyWW9z9by1DLioHkeEZmqKqSSQR9TmagBc9zVVySq2FYA4iqlMWMqA_bdran77Eb_L7re0-XfTzQGKilq7jxcUxx1zn66jd2zFovaG0nn67JRbD94G_-dE6-lk-fixWr355fFo81c4KrkaEoUAFvW-6Flihc0wbOneUlNtoWonGNDhqgsg0HWVXQ-lBoUM6rBpwPYk7YqdelOAzJB7NL3camySCYI7bJ2OaIbY7YOf9wyh9sP_rU-u-0n7Ix67hP23zpP3soVX7KL-OoXdY</recordid><startdate>19760701</startdate><enddate>19760701</enddate><creator>Hiltrop, Karl</creator><creator>Fischer, Fred</creator><general>Verlag der Zeitschrift für Naturforschung</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19760701</creationdate><title>Radial Poiseuille Flow of a Homeotropic Nematic LC Layer</title><author>Hiltrop, Karl ; Fischer, Fred</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c328t-1341802dd2e39713cbdf22ca251b9a43bcb9f9006ab207660def4908ce8b0cef3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1976</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hiltrop, Karl</creatorcontrib><creatorcontrib>Fischer, Fred</creatorcontrib><collection>CrossRef</collection><jtitle>Zeitschrift für Naturforschung. A, A journal of physical sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hiltrop, Karl</au><au>Fischer, Fred</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Radial Poiseuille Flow of a Homeotropic Nematic LC Layer</atitle><jtitle>Zeitschrift für Naturforschung. A, A journal of physical sciences</jtitle><date>1976-07-01</date><risdate>1976</risdate><volume>31</volume><issue>7</issue><spage>800</spage><epage>807</epage><pages>800-807</pages><issn>0932-0784</issn><eissn>1865-7109</eissn><abstract>A two-dimensional Poiseuille flow in a radial direction allows to study simultaneously a whole range of flow rates. Three different deformation modes of the director field have been observed, the 'bow' mode, the 'screw' mode, and the 'peak' mode. Above a critical flow rate the bow mode transforms into the screw mode. Right and left screw mode can be produced side by side. The peak mode reached by temporary high flow rates is metastable at low flow rates. Quantitative results are reported and discussed. By reversing the flow direction in the screw mode region the left screw mode is transformed into the right screw mode and vice versa. By reversing the flow direction in the peak mode region special tube-like deformation structures are obtained. Each open tube has a point disclination at either end. Both are of opposite strength ± 1.</abstract><pub>Verlag der Zeitschrift für Naturforschung</pub><doi>10.1515/zna-1976-0721</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0932-0784
ispartof Zeitschrift für Naturforschung. A, A journal of physical sciences, 1976-07, Vol.31 (7), p.800-807
issn 0932-0784
1865-7109
language eng
recordid cdi_crossref_primary_10_1515_zna_1976_0721
source Alma/SFX Local Collection
title Radial Poiseuille Flow of a Homeotropic Nematic LC Layer
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-11T05%3A53%3A04IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-walterdegruyter_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Radial%20Poiseuille%20Flow%20of%20a%20Homeotropic%20Nematic%20LC%20Layer&rft.jtitle=Zeitschrift%20f%C3%BCr%20Naturforschung.%20A,%20A%20journal%20of%20physical%20sciences&rft.au=Hiltrop,%20Karl&rft.date=1976-07-01&rft.volume=31&rft.issue=7&rft.spage=800&rft.epage=807&rft.pages=800-807&rft.issn=0932-0784&rft.eissn=1865-7109&rft_id=info:doi/10.1515/zna-1976-0721&rft_dat=%3Cwalterdegruyter_cross%3E10_1515_zna_1976_0721317800%3C/walterdegruyter_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true