{"created":"2023-06-26T11:00:28.892512+00:00","id":983,"links":{},"metadata":{"_buckets":{"deposit":"463a14b4-e62f-4310-8bc9-1f60f0c91db0"},"_deposit":{"created_by":28,"id":"983","owners":[28],"pid":{"revision_id":0,"type":"depid","value":"983"},"status":"published"},"_oai":{"id":"oai:oist.repo.nii.ac.jp:00000983","sets":["6:54"]},"author_link":["5402","5401","5399","5398","5400"],"item_10001_biblio_info_7":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-01-18","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"9","bibliographicPageEnd":"1941","bibliographicPageStart":"1927","bibliographicVolumeNumber":"15","bibliographic_titles":[{},{"bibliographic_title":"Soft Matter","bibliographic_titleLang":"en"}]}]},"item_10001_creator_3":{"attribute_name":"Author","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Haward, Simon J."}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kitajima, Naoyuki"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Toda-Peters, Kazumi"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takahashi, Tsutomu"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Shen, Amy Q."}],"nameIdentifiers":[{}]}]},"item_10001_description_5":{"attribute_name":"Abstract","attribute_value_mlt":[{"subitem_description":"We employ time-resolved flow velocimetry and birefringence imaging methods to study the flow of a well-characterized shear-banding wormlike micellar solution around a novel glass-fabricated microfluidic circular cylinder. In contrast with typical microfluidic cylinders, our geometry is characterized by a high aspect ratio alpha = H/W = 5 and a low blockage ratio beta = 2r/W = 0.1, where H and W are the channel height and width, and the cylinder radius r = 20 mum. The small cylinder radius allows access up to very high Weissenberg numbers 1.9 </= Wi = lambdaMU/r </= 3750 (where lambdaM is the Maxwell relaxation time) while inertial effects remain entirely negligible (Reynolds number, Re < 10-4). At low Wi values, the flow remains steady and symmetric and a birefringent region (indicating micellar alignment and tensile stress) develops downstream of the cylinder. Above a critical value Wic approximately 60 the flow transitions to a steady asymmetric state, characterized as a supercritical pitchfork bifurcation, in which the fluid takes a preferential path around one side of the cylinder. At a second critical value Wic2 approximately 130, the flow becomes time-dependent, with a characteristic frequency f0 approximately 1/lambdaM. This initial transition to time dependence has characteristics of a subcritical Hopf bifurcation. Power spectra of the measured fluctuations become complex as Wi is increased further, showing a gradual slowing down of the dynamics and emergence of harmonics. A final transition at very high Wic3 corresponds to the re-emergence of a single peak in the power spectrum but at much higher frequency. We discuss this in terms of possible flow-induced breakage of micelles into shorter species with a faster relaxation time.","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_publisher":"Royal Society of Chemistry"}]},"item_10001_relation_13":{"attribute_name":"PubMedNo.","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"info:pmid/30657156","subitem_relation_type_select":"PMID"}}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1039/C8SM02099J","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"https://creativecommons.org/licenses/by/3.0/"}]}]},"item_10001_relation_17":{"attribute_name":"Related site","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://pubs.rsc.org/en/content/articlelanding/2019/sm/c8sm02099j#!divAbstract","subitem_relation_type_select":"URI"}}]},"item_10001_rights_15":{"attribute_name":"Rights","attribute_value_mlt":[{"subitem_rights":"© 2019 The Royal Society of Chemistry."}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1744-683X","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"1744-6848","subitem_source_identifier_type":"ISSN"}]},"item_10001_version_type_20":{"attribute_name":"Author's flag","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-07-04"}],"displaytype":"detail","filename":"Haward-2019-Flow of wormlike micellar solution.pdf","filesize":[{"value":"4.9 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"Haward-2019-Flow of wormlike micellar solution","url":"https://oist.repo.nii.ac.jp/record/983/files/Haward-2019-Flow of wormlike micellar solution.pdf"},"version_id":"2815b2a8-88e1-4972-91ef-34e6b7249df4"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Flow of wormlike micellar solutions around microfluidic cylinders with high aspect ratio and low blockage ratio","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Flow of wormlike micellar solutions around microfluidic cylinders with high aspect ratio and low blockage ratio","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"28","path":["54"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-07-04"},"publish_date":"2019-07-04","publish_status":"0","recid":"983","relation_version_is_last":true,"title":["Flow of wormlike micellar solutions around microfluidic cylinders with high aspect ratio and low blockage ratio"],"weko_creator_id":"28","weko_shared_id":28},"updated":"2023-06-26T11:59:12.021450+00:00"}