{"id":"https://openalex.org/A5004861671","orcid":null,"observed_orcids":[],"display_name":"Akihiko Akasegawa","raw_author_names":["A Akasegawa","A. AKASEGAWA","A. Akasegawa","Akihiko AKASEGAWA","Akihiko Akasegawa"],"full_name":"Akihiko Akasegawa","works_count":38,"cited_by_count":294,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":10,"i10_index":10},"ids":{"openalex":"https://openalex.org/A5004861671","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":[2008]},{"institution":{"id":"https://openalex.org/I2252096349","ror":"https://ror.org/038e2g226","display_name":"Fujitsu (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I2252096349"]},"years":[2011,2010,2009,2008,2007,2006,2005,2000]},{"institution":{"id":"https://openalex.org/I4210092329","ror":"https://ror.org/00e1wd906","display_name":"Institute of Electronics, Information and Communication Engineers","country_code":"JP","type":"nonprofit","lineage":["https://openalex.org/I4210092329"]},"years":[2008]}],"last_known_institutions":[{"id":"https://openalex.org/I2252096349","ror":"https://ror.org/038e2g226","display_name":"Fujitsu (Japan)","country_code":"JP","type":"company","lineage":["https://openalex.org/I2252096349"]}],"topics":[{"id":"https://openalex.org/T10262","display_name":"Microwave Engineering and Waveguides","count":31,"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/T11803","display_name":"Superconducting and THz Device Technology","count":27,"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/T11808","display_name":"Superconducting Materials and Applications","count":16,"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/T11248","display_name":"Advanced Power Amplifier Design","count":9,"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/T10099","display_name":"GaN-based semiconductor devices and materials","count":5,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T11803","display_name":"Superconducting and THz Device Technology","value":0.0002309,"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/T10262","display_name":"Microwave Engineering and Waveguides","value":7.87e-05,"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/T11248","display_name":"Advanced Power Amplifier Design","value":7.35e-05,"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/T11808","display_name":"Superconducting Materials and Applications","value":6.5e-05,"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/T11160","display_name":"Acoustic Wave Resonator Technologies","value":2.84e-05,"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"}}],"x_concepts":[{"id":"192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","score":0.9241330027580261},{"id":"49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","score":0.6701429486274719},{"id":"119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","score":0.596220076084137},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.4945995509624481},{"id":"127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","score":0.35321033000946045}],"counts_by_year":[{"year":2000,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2005,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2006,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2007,"works_count":8,"oa_works_count":1,"cited_by_count":0},{"year":2008,"works_count":10,"oa_works_count":3,"cited_by_count":0},{"year":2009,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2011,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":31},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":16},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":20},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":12},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":20},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":12},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":13},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":9},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":6},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":7},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":7},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":1}],"display_name_alternatives":["A Akasegawa","A. AKASEGAWA","A. Akasegawa","Akihiko AKASEGAWA","Akihiko Akasegawa"],"block_key":"a akasegawa","works_api_url":"https://api.openalex.org/works?filter=author.id:A5004861671","awards_count":0,"updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}