{"id":"https://openalex.org/keywords/complex-permittivity","display_name":"complex permittivity","description":"Complex permittivity is a frequency-dependent electrical property describing how a material responds to electromagnetic fields, including energy storage and loss.","display_name_alternatives":["complex dielectric permittivity","complex dielectric constant"],"ids":{"openalex":"https://openalex.org/keywords/complex-permittivity","wikidata":null},"primary_topic":{"id":"https://openalex.org/T11607","display_name":"Microwave and Dielectric Measurement Techniques","score":0.2672,"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"}},"topics":[{"id":"https://openalex.org/T11607","display_name":"Microwave and Dielectric Measurement Techniques","score":0.2672,"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/T11224","display_name":"Electromagnetic wave absorption materials","score":0.1562,"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"}}],"works_count":14593,"cited_by_count":309198,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/complex-permittivity","updated_date":"2026-10-22T04:07:25","created_date":"2026-09-30T00:00:00"}