{"created":"2021-09-09T02:08:13.839815+00:00","id":2001409,"links":{},"metadata":{"_buckets":{"deposit":"eb442d44-5e96-4bf2-848d-4424d3da39c1"},"_deposit":{"created_by":17,"id":"2001409","owner":"17","owners":[17],"owners_ext":{"displayname":"図書情報係","username":"repository"},"pid":{"revision_id":0,"type":"depid","value":"2001409"},"status":"published"},"_oai":{"id":"oai:nagoya.repo.nii.ac.jp:02001409","sets":["673:674:675"]},"author_link":[],"control_number":"2001409","item_1615768549627":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_1629683748249":{"attribute_name":"日付","attribute_value_mlt":[{"subitem_date_issued_datetime":"2021-11-09","subitem_date_issued_type":"Available"}]},"item_9_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2020-11-09","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"19","bibliographicPageStart":"193902","bibliographicVolumeNumber":"117","bibliographic_titles":[{"bibliographic_title":"Applied Physics Letters","bibliographic_titleLang":"en"}]}]},"item_9_description_4":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"A potassium-ion electret, which is a key element of vibration-powered microelectromechanical generators, can store negative charge almost permanently. However, the mechanism by which this negative charge is stored is still unclear. We theoretically study the atomic and electronic structures of amorphous silica (a-SiO2) with and without potassium atoms using first-principles molecular-dynamics calculations. Our calculations show that a fivefold-coordinated Si atom with five Si–O bonds (an SiO5 structure) is the characteristic local structure of a-SiO2 with potassium atoms, which becomes negatively charged and remains so even after removal of the potassium atoms. These results indicate that this SiO5 structure is the physical origin of the robust negative charge observed in potassium-ion electrets. We also find that the SiO5 structure has a Raman peak at 1000 cm^−1.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_9_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"AIP Publishing","subitem_publisher_language":"en"}]},"item_9_relation_43":{"attribute_name":"関連情報","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1063/5.0029012","subitem_relation_type_select":"DOI"}}]},"item_9_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright 2020 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.The following article appeared in (Applied Physics Letters. v.117, n.19, 2020, p.193902) and may be found at ( https://doi.org/10.1063/5.0029012).","subitem_rights_language":"en"}]},"item_9_source_id_7":{"attribute_name":"収録物識別子","attribute_value_mlt":[{"subitem_source_identifier":"0003-6951","subitem_source_identifier_type":"PISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Nakanishi, Toru","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Miyajima, Takeshi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Chokawa, Kenta","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Araidai, Masaaki","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Toshiyoshi, Hiroshi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Sugiyama, Tatsuhiko","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Hashiguchi, Gen","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Shiraishi, Kenji","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2021-11-09"}],"displaytype":"detail","filename":"5_0029012.pdf","filesize":[{"value":"1.3 MB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://nagoya.repo.nii.ac.jp/record/2001409/files/5_0029012.pdf"},"version_id":"b387d1f1-5102-4d5e-8a15-f52c8aba74f5"}]},"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":"Negative-charge-storing mechanism of potassium-ion SiO2-based electrets for vibration-powered generators","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Negative-charge-storing mechanism of potassium-ion SiO2-based electrets for vibration-powered generators","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"17","path":["675"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2021-09-09"},"publish_date":"2021-09-09","publish_status":"0","recid":"2001409","relation_version_is_last":true,"title":["Negative-charge-storing mechanism of potassium-ion SiO2-based electrets for vibration-powered generators"],"weko_creator_id":"17","weko_shared_id":-1},"updated":"2023-01-16T05:14:26.259167+00:00"}