{"created":"2023-05-15T08:55:09.980756+00:00","id":13074,"links":{},"metadata":{"_buckets":{"deposit":"6335a99a-3958-4c4c-855a-e452ed18caab"},"_deposit":{"created_by":11,"id":"13074","owners":[11],"pid":{"revision_id":0,"type":"depid","value":"13074"},"status":"published"},"_oai":{"id":"oai:uuair.repo.nii.ac.jp:00013074","sets":["715:719:909"]},"author_link":["21199","21200","21156","21157","21158"],"control_number":"13074","item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021-08-28","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"338952","bibliographicVolumeNumber":"1182","bibliographic_titles":[{"bibliographic_title":"Analytica Chimica Acta","bibliographic_titleLang":"en"}]}]},"item_10001_description_19":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"text","subitem_description_type":"Other"}]},"item_10001_description_24":{"attribute_name":"WEKOアイテムタイプ","attribute_value_mlt":[{"subitem_description":"学術雑誌論文 / Journal Article","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The absorption spectra of bromothymol blue (BTB) solution introduced in microfluidic devices were reproduced by principal component analysis (PCA)-based xyz-spectrum conversion methods for geometric mapping of the pH values of fluids. We fabricated PDMS-made microfluidic devices with a channel depth of 1 mm to overcome the lower detection limits of transmittance image acquisition. Aqueous solutions of pH indicators under various pH conditions were hydrodynamically introduced into the channel, and RGB values of the region of interest (ROI) were obtained via image analysis. The xyz values were then converted into absorption spectral data of the pH indicator using the PCA-based spectral reproduction previously proposed by the authors. The high reproducibility of the spectra was confirmed to be comparable to that of the conventional method using a spectrophotometer. We applied the present method to elucidate the pH gradient at an aqueous biphasic interface in the microfluidic channels generated by contacting multiple laminar flows of two or three buffered solutions. We confirmed that the pH gradient ranged from approximately 70 to 140 μm, which is consistent with the results reported using other approaches. The results demonstrate the applicability of the present method to the fluctuation field in micro/nanospaces to acquire spectrophotometric information in the order of milliseconds without monochromating equipment.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Elsevier","subitem_publisher_language":"en"}]},"item_10001_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"Elsevier Publisher Edition"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://www.sciencedirect.com/science/article/pii/S0003267021007789","subitem_relation_type_select":"URI"}},{"subitem_relation_name":[{"subitem_relation_name_text":"Best available version URL"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://www.sciencedirect.com/science/article/am/pii/S0003267021007789","subitem_relation_type_select":"URI"}}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00032670","subitem_source_identifier_type":"PISSN"}]},"item_10001_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"稲川, 有徳","creatorNameLang":"ja"},{"creatorName":"イナガワ, アリノリ","creatorNameLang":"ja-Kana"},{"creatorName":"Inagawa, Arinori","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"21199","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Saito, Kana","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"21200","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"福山, 真央","creatorNameLang":"ja"},{"creatorName":"フクヤマ, マオ","creatorNameLang":"ja-Kana"},{"creatorName":"Fukuyama, Mao","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"21156","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"沼田, 宗典","creatorNameLang":"ja"},{"creatorName":"ヌマタ, ムネノリ","creatorNameLang":"ja-Kana"},{"creatorName":"Numata, Munenori","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"21157","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"上原, 伸夫","creatorNameLang":"ja"},{"creatorName":"ウエハラ, ノブオ","creatorNameLang":"ja-Kana"},{"creatorName":"Uehara, Nobuo","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"21158","nameIdentifierScheme":"WEKO"}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"マイクロフルイディクス","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"Xyzスペクトラム変換","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"水性二相性インターフェース","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"層流","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"プロトン分布","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"Microfluidics","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Xyz-spectrum conversion","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Aqueous biphasic interface","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Laminar flow","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Proton distribution","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"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":"Geometrical pH mapping of Microfluids by principal-component-analysis-based xyz-spectrum conversion method","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Geometrical pH mapping of Microfluids by principal-component-analysis-based xyz-spectrum conversion method","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"11","path":["909"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2022-08-28"},"publish_date":"2022-08-28","publish_status":"0","recid":"13074","relation_version_is_last":true,"title":["Geometrical pH mapping of Microfluids by principal-component-analysis-based xyz-spectrum conversion method"],"weko_creator_id":"11","weko_shared_id":-1},"updated":"2024-07-10T05:28:57.390686+00:00"}