{"id":"https://openalex.org/A5111884064","orcid":"https://orcid.org/0000-0001-5036-9023","observed_orcids":["https://orcid.org/0000-0001-5036-9023"],"display_name":"Ch. Subrahmanyam","raw_author_names":["C. Subrahmanyam","CH. SUBRAHMANYAM","Ch. SUBRAHMANYAM","Ch. Subrahmanyam","Ch. Subrahmanyam,","Challapalli Subrahmanyam","Subrahmanyam Ch","Subrahmanyam Ch.","Subrahmanyam, Ch."],"full_name":"Subrahmanyam Ch.","works_count":171,"cited_by_count":5611,"summary_stats":{"2yr_mean_citedness":3.9166666666666665,"h_index":44,"i10_index":110},"ids":{"openalex":"https://openalex.org/A5111884064","orcid":"https://orcid.org/0000-0001-5036-9023","observed_orcids":["https://orcid.org/0000-0001-5036-9023"]},"affiliations":[{"institution":{"id":"https://openalex.org/I122964287","ror":"https://ror.org/047x65e68","display_name":"National Institute of Technology Tiruchirappalli","country_code":"IN","type":"education","lineage":["https://openalex.org/I122964287"]},"years":[2009]},{"institution":{"id":"https://openalex.org/I24676775","ror":"https://ror.org/03v0r5n49","display_name":"Indian Institute of Technology Madras","country_code":"IN","type":"education","lineage":["https://openalex.org/I24676775"]},"years":[2008,2005,2004,2003,2002,2001]},{"institution":{"id":"https://openalex.org/I5124864","ror":"https://ror.org/02s376052","display_name":"\u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I5124864"]},"years":[2007,2006]},{"institution":{"id":"https://openalex.org/I65181880","ror":"https://ror.org/01j4v3x97","display_name":"Indian Institute of Technology Hyderabad","country_code":"IN","type":"education","lineage":["https://openalex.org/I65181880"]},"years":[2025,2024,2023,2022,2021,2020,2019,2018,2017,2016,2015,2014,2013,2012,2011,2010]}],"last_known_institutions":[{"id":"https://openalex.org/I65181880","ror":"https://ror.org/01j4v3x97","display_name":"Indian Institute of Technology Hyderabad","country_code":"IN","type":"education","lineage":["https://openalex.org/I65181880"]}],"topics":[{"id":"https://openalex.org/T10642","display_name":"Plasma Applications and Diagnostics","count":58,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10078","display_name":"Advanced Photocatalysis Techniques","count":39,"subfield":{"id":"https://openalex.org/subfields/2105","display_name":"Renewable Energy, Sustainability and the Environment"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10210","display_name":"Advanced oxidation water treatment","count":37,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10495","display_name":"Catalysts for Methane Reforming","count":37,"subfield":{"id":"https://openalex.org/subfields/1503","display_name":"Catalysis"},"field":{"id":"https://openalex.org/fields/15","display_name":"Chemical Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10024","display_name":"TiO2 Photocatalysis and Solar Cells","count":32,"subfield":{"id":"https://openalex.org/subfields/2105","display_name":"Renewable Energy, Sustainability and the Environment"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T10642","display_name":"Plasma Applications and Diagnostics","value":0.0002828,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10495","display_name":"Catalysts for Methane Reforming","value":0.0001579,"subfield":{"id":"https://openalex.org/subfields/1503","display_name":"Catalysis"},"field":{"id":"https://openalex.org/fields/15","display_name":"Chemical Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11877","display_name":"Iron oxide chemistry and applications","value":0.0001382,"subfield":{"id":"https://openalex.org/subfields/2105","display_name":"Renewable Energy, Sustainability and the Environment"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10210","display_name":"Advanced oxidation water treatment","value":0.0001213,"subfield":{"id":"https://openalex.org/subfields/2312","display_name":"Water Science and Technology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11821","display_name":"Odor and Emission Control Technologies","value":0.0001111,"subfield":{"id":"https://openalex.org/subfields/1508","display_name":"Process Chemistry and Technology"},"field":{"id":"https://openalex.org/fields/15","display_name":"Chemical Engineering"},"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":0.9915305972099304},{"id":"161790260","wikidata":"https://www.wikidata.org/wiki/Q82264","display_name":"Catalysis","score":0.9204726219177246},{"id":"192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","score":0.9147714376449585},{"id":"178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","score":0.5899999737739563},{"id":"127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","score":0.3295069932937622}],"counts_by_year":[{"year":1979,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":1,"oa_works_count":0,"cited_by_count":8},{"year":2001,"works_count":1,"oa_works_count":1,"cited_by_count":2},{"year":2002,"works_count":3,"oa_works_count":3,"cited_by_count":59},{"year":2003,"works_count":1,"oa_works_count":1,"cited_by_count":48},{"year":2004,"works_count":2,"oa_works_count":0,"cited_by_count":49},{"year":2005,"works_count":1,"oa_works_count":1,"cited_by_count":38},{"year":2006,"works_count":3,"oa_works_count":3,"cited_by_count":318},{"year":2007,"works_count":3,"oa_works_count":2,"cited_by_count":309},{"year":2008,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2009,"works_count":1,"oa_works_count":0,"cited_by_count":18},{"year":2010,"works_count":2,"oa_works_count":1,"cited_by_count":147},{"year":2011,"works_count":5,"oa_works_count":1,"cited_by_count":138},{"year":2012,"works_count":15,"oa_works_count":2,"cited_by_count":1111},{"year":2013,"works_count":12,"oa_works_count":2,"cited_by_count":544},{"year":2014,"works_count":13,"oa_works_count":5,"cited_by_count":184},{"year":2015,"works_count":14,"oa_works_count":2,"cited_by_count":453},{"year":2016,"works_count":10,"oa_works_count":3,"cited_by_count":193},{"year":2017,"works_count":10,"oa_works_count":2,"cited_by_count":400},{"year":2018,"works_count":11,"oa_works_count":3,"cited_by_count":259},{"year":2019,"works_count":10,"oa_works_count":0,"cited_by_count":305},{"year":2020,"works_count":15,"oa_works_count":6,"cited_by_count":460},{"year":2021,"works_count":5,"oa_works_count":3,"cited_by_count":135},{"year":2022,"works_count":8,"oa_works_count":3,"cited_by_count":210},{"year":2023,"works_count":11,"oa_works_count":3,"cited_by_count":176},{"year":2024,"works_count":7,"oa_works_count":2,"cited_by_count":27},{"year":2025,"works_count":5,"oa_works_count":1,"cited_by_count":20}],"display_name_alternatives":["C. Subrahmanyam","CH. SUBRAHMANYAM","Ch. SUBRAHMANYAM","Ch. Subrahmanyam","Ch. Subrahmanyam,","Challapalli Subrahmanyam","Subrahmanyam Ch","Subrahmanyam Ch.","Subrahmanyam, Ch."],"block_key":"c subrahmanyam","works_api_url":"https://api.openalex.org/works?filter=author.id:A5111884064","updated_date":"2026-10-18T12:41:17","created_date":"2016-10-14T00:00:00"}
