{"id":"https://openalex.org/A5073738575","orcid":"https://orcid.org/0000-0003-2157-7864","observed_orcids":["https://orcid.org/0000-0003-2157-7864"],"display_name":"S. Karthikeyan","raw_author_names":["Karthikeyan S","Karthikeyan Subramani","Karthikeyan, S.","Karthikeyan, Subramani","S Karthikeyan","S. KARTHIKEYAN","S. Karthikeyan","Subramani Karthikeyan"],"full_name":"Karthikeyan, Subramani","works_count":199,"cited_by_count":1387,"summary_stats":{"2yr_mean_citedness":4.530612244897959,"h_index":21,"i10_index":43},"ids":{"openalex":"https://openalex.org/A5073738575","orcid":"https://orcid.org/0000-0003-2157-7864","observed_orcids":["https://orcid.org/0000-0003-2157-7864"]},"affiliations":[{"institution":{"id":"https://openalex.org/I107640659","ror":"https://ror.org/03sfk2504","display_name":"South Ural State University","country_code":"RU","type":"education","lineage":["https://openalex.org/I107640659"]},"years":[2022]},{"institution":{"id":"https://openalex.org/I126527374","ror":"https://ror.org/02dn9h927","display_name":"Peoples' Friendship University of Russia","country_code":"RU","type":"education","lineage":["https://openalex.org/I126527374"]},"years":[2022,2021,2020,2019,2018]},{"institution":{"id":"https://openalex.org/I136199984","ror":"https://ror.org/03vek6s52","display_name":"Harvard University","country_code":"US","type":"education","lineage":["https://openalex.org/I136199984"]},"years":[2002]},{"institution":{"id":"https://openalex.org/I169521973","ror":"https://ror.org/05fs6jp91","display_name":"University of New Mexico","country_code":"US","type":"education","lineage":["https://openalex.org/I169521973"]},"years":[1989,1988,1987]},{"institution":{"id":"https://openalex.org/I175691731","ror":"https://ror.org/01a3mef16","display_name":"Pondicherry University","country_code":"IN","type":"education","lineage":["https://openalex.org/I175691731"]},"years":[2014,2011,2001]},{"institution":{"id":"https://openalex.org/I215927","ror":"https://ror.org/04jmt9361","display_name":"University of Madras","country_code":"IN","type":"education","lineage":["https://openalex.org/I215927"]},"years":[2015,2013]},{"institution":{"id":"https://openalex.org/I2802194831","ror":"https://ror.org/05a15z872","display_name":"Samsung Medical Center","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I2250650973","https://openalex.org/I2802194831"]},"years":[2021]},{"institution":{"id":"https://openalex.org/I33585257","ror":"https://ror.org/01qhf1r47","display_name":"Anna University, Chennai","country_code":"IN","type":"education","lineage":["https://openalex.org/I33585257"]},"years":[2022,2019,2018,2017,2016,2015,2005]},{"institution":{"id":"https://openalex.org/I4210111349","ror":"https://ror.org/01x4gae84","display_name":"Kovai Medical Center and Hospital","country_code":"IN","type":"healthcare","lineage":["https://openalex.org/I4210111349"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I4405279679","ror":"https://ror.org/01vemrn05","display_name":"Ramakrishna Mission Vivekananda College","country_code":"IN","type":"education","lineage":["https://openalex.org/I4405279679"]},"years":[2014,2011]},{"institution":{"id":"https://openalex.org/I54009628","ror":"https://ror.org/0234wmv40","display_name":"University of Bayreuth","country_code":"DE","type":"education","lineage":["https://openalex.org/I54009628"]},"years":[2006]},{"institution":{"id":"https://openalex.org/I848706","ror":"https://ror.org/04q78tk20","display_name":"Sungkyunkwan University","country_code":"KR","type":"education","lineage":["https://openalex.org/I848706"]},"years":[2021]},{"institution":{"id":"https://openalex.org/I876193797","ror":"https://ror.org/00qzypv28","display_name":"Vellore Institute of Technology University","country_code":"IN","type":"education","lineage":["https://openalex.org/I876193797"]},"years":[2026,2025,2024,2023,2022]},{"institution":{"id":"https://openalex.org/I916357946","ror":"https://ror.org/054psm803","display_name":"Sri Sivasubramaniya Nadar College of Engineering","country_code":"IN","type":"education","lineage":["https://openalex.org/I916357946"]},"years":[2021]}],"last_known_institutions":[{"id":"https://openalex.org/I876193797","ror":"https://ror.org/00qzypv28","display_name":"Vellore Institute of Technology University","country_code":"IN","type":"education","lineage":["https://openalex.org/I876193797"]}],"topics":[{"id":"https://openalex.org/T10464","display_name":"Crystal structures of chemical compounds","count":106,"subfield":{"id":"https://openalex.org/subfields/1604","display_name":"Inorganic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10798","display_name":"Crystallography and molecular interactions","count":79,"subfield":{"id":"https://openalex.org/subfields/1606","display_name":"Physical and Theoretical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10939","display_name":"Crystal Structures and Properties","count":50,"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/T11908","display_name":"Protein Interaction Studies and Fluorescence Analysis","count":29,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10274","display_name":"Heterocyclic Compound Synthesis and Bioactivity","count":23,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T11908","display_name":"Protein Interaction Studies and Fluorescence Analysis","value":0.0002168,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T13871","display_name":"Melamine detection and toxicity","value":0.000205,"subfield":{"id":"https://openalex.org/subfields/1106","display_name":"Food Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T13971","display_name":"Isoquinoline Alkaloid Synthesis","value":0.0001513,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11025","display_name":"Nonlinear Optical Materials Research","value":0.0001367,"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/T13160","display_name":"Synthesis and Biological Evaluation","value":8.28e-05,"subfield":{"id":"https://openalex.org/subfields/1605","display_name":"Organic Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.9903911352157593},{"id":"8010536","wikidata":"https://www.wikidata.org/wiki/Q160398","display_name":"Crystallography","score":0.6878939867019653},{"id":"115624301","wikidata":"https://www.wikidata.org/wiki/Q895901","display_name":"Crystal structure","score":0.6679999828338623},{"id":"71240020","wikidata":"https://www.wikidata.org/wiki/Q186011","display_name":"Stereochemistry","score":0.5590737462043762},{"id":"178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","score":0.4075256586074829}],"counts_by_year":[{"year":1987,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1988,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1997,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1998,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2002,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":2003,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":3,"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":6,"oa_works_count":6,"cited_by_count":0},{"year":2007,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":2011,"works_count":10,"oa_works_count":10,"cited_by_count":0},{"year":2012,"works_count":5,"oa_works_count":5,"cited_by_count":4},{"year":2013,"works_count":6,"oa_works_count":6,"cited_by_count":5},{"year":2014,"works_count":13,"oa_works_count":9,"cited_by_count":9},{"year":2015,"works_count":10,"oa_works_count":6,"cited_by_count":15},{"year":2016,"works_count":3,"oa_works_count":1,"cited_by_count":18},{"year":2017,"works_count":4,"oa_works_count":2,"cited_by_count":31},{"year":2018,"works_count":5,"oa_works_count":2,"cited_by_count":49},{"year":2019,"works_count":7,"oa_works_count":1,"cited_by_count":44},{"year":2020,"works_count":16,"oa_works_count":6,"cited_by_count":59},{"year":2021,"works_count":12,"oa_works_count":6,"cited_by_count":97},{"year":2022,"works_count":3,"oa_works_count":1,"cited_by_count":83},{"year":2023,"works_count":25,"oa_works_count":18,"cited_by_count":143},{"year":2024,"works_count":25,"oa_works_count":12,"cited_by_count":202},{"year":2025,"works_count":19,"oa_works_count":6,"cited_by_count":274},{"year":2026,"works_count":5,"oa_works_count":4,"cited_by_count":287}],"display_name_alternatives":["Karthikeyan S","Karthikeyan Subramani","Karthikeyan, S.","Karthikeyan, Subramani","S Karthikeyan","S. KARTHIKEYAN","S. Karthikeyan","Subramani Karthikeyan"],"block_key":"s karthikeyan","works_api_url":"https://api.openalex.org/works?filter=author.id:A5073738575","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5073738575","updated_date":"2026-11-12T13:17:38","created_date":"2016-06-24T00:00:00"}