{"id":"https://openalex.org/A5111948810","orcid":null,"observed_orcids":[],"display_name":"Kyosuke Sakai","raw_author_names":["Kyosuke SAKAI","Kyosuke Sakai","Sakai, Kyosuke"],"full_name":"Sakai, Kyosuke","works_count":66,"cited_by_count":1823,"summary_stats":{"2yr_mean_citedness":1.5,"h_index":19,"i10_index":24},"ids":{"openalex":"https://openalex.org/A5111948810","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I205349734","ror":"https://ror.org/02e16g702","display_name":"Hokkaido University","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]},"years":[2026,2025,2023,2022,2019,2018,2017,2016,2015,2014,2013,2012]},{"institution":{"id":"https://openalex.org/I22299242","ror":"https://ror.org/02kpeqv85","display_name":"Kyoto University","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]},"years":[2013,2012,2011,2010,2009,2008,2007,2006]},{"institution":{"id":"https://openalex.org/I4210086780","ror":"https://ror.org/00097mb19","display_name":"Japan Science and Technology Agency","country_code":"JP","type":"government","lineage":["https://openalex.org/I1319490839","https://openalex.org/I4210086780"]},"years":[2010,2009,2008]},{"institution":{"id":"https://openalex.org/I4405286026","ror":"https://ror.org/00z8a5a73","display_name":"Research Institute for Electronic Science, Hokkaido University","country_code":"JP","type":"facility","lineage":["https://openalex.org/I205349734","https://openalex.org/I4405286026"]},"years":[2023,2022,2018,2016,2015,2013,2012]}],"last_known_institutions":[{"id":"https://openalex.org/I205349734","ror":"https://ror.org/02e16g702","display_name":"Hokkaido University","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"topics":[{"id":"https://openalex.org/T10666","display_name":"Photonic Crystals and Applications","count":40,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10295","display_name":"Plasmonic and Surface Plasmon Research","count":31,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10245","display_name":"Metamaterials and Metasurfaces Applications","count":26,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10299","display_name":"Photonic and Optical Devices","count":26,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11429","display_name":"Semiconductor Lasers and Optical Devices","count":26,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T10666","display_name":"Photonic Crystals and Applications","value":0.0003092,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10490","display_name":"Orbital Angular Momentum in Optics","value":0.0001447,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10295","display_name":"Plasmonic and Surface Plasmon Research","value":0.0001211,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10245","display_name":"Metamaterials and Metasurfaces Applications","value":9.35e-05,"subfield":{"id":"https://openalex.org/subfields/2504","display_name":"Electronic, Optical and Magnetic Materials"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12466","display_name":"Near-Field Optical Microscopy","value":8.86e-05,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","score":0.8989432454109192},{"id":"120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","score":0.8908535242080688},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.754800021648407},{"id":"520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","score":0.7361383438110352},{"id":"49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","score":0.6934719085693359}],"counts_by_year":[{"year":2006,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":3,"oa_works_count":2,"cited_by_count":0},{"year":2008,"works_count":3,"oa_works_count":3,"cited_by_count":0},{"year":2009,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":2010,"works_count":6,"oa_works_count":1,"cited_by_count":0},{"year":2011,"works_count":4,"oa_works_count":4,"cited_by_count":0},{"year":2012,"works_count":8,"oa_works_count":1,"cited_by_count":111},{"year":2013,"works_count":3,"oa_works_count":1,"cited_by_count":111},{"year":2014,"works_count":1,"oa_works_count":0,"cited_by_count":103},{"year":2015,"works_count":4,"oa_works_count":1,"cited_by_count":70},{"year":2016,"works_count":9,"oa_works_count":1,"cited_by_count":101},{"year":2017,"works_count":3,"oa_works_count":0,"cited_by_count":117},{"year":2018,"works_count":6,"oa_works_count":2,"cited_by_count":83},{"year":2019,"works_count":2,"oa_works_count":0,"cited_by_count":88},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":95},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":126},{"year":2022,"works_count":1,"oa_works_count":1,"cited_by_count":132},{"year":2023,"works_count":1,"oa_works_count":1,"cited_by_count":121},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":133},{"year":2025,"works_count":1,"oa_works_count":0,"cited_by_count":122},{"year":2026,"works_count":1,"oa_works_count":0,"cited_by_count":144}],"display_name_alternatives":["Kyosuke SAKAI","Kyosuke Sakai","Sakai, Kyosuke"],"block_key":"k sakai","works_api_url":"https://api.openalex.org/works?filter=author.id:A5111948810","updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}