{"id":"https://openalex.org/keywords/zone-plates","display_name":"zone plates","description":"Zone plates are optical devices with alternating transparent and opaque zones that focus light through diffraction.","display_name_alternatives":[],"ids":{"openalex":"https://openalex.org/keywords/zone-plates","wikidata":"https://www.wikidata.org/wiki/Q1455709"},"primary_topic":{"id":"https://openalex.org/T11183","display_name":"Advanced X-ray Imaging Techniques","score":0.4036,"subfield":{"id":"https://openalex.org/subfields/3108","display_name":"Radiation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11183","display_name":"Advanced X-ray Imaging Techniques","score":0.4036,"subfield":{"id":"https://openalex.org/subfields/3108","display_name":"Radiation"},"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/T11517","display_name":"Advanced optical system design","score":0.0977,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"works_count":1014,"cited_by_count":9495,"works_api_url":"https://api.openalex.org/works?filter=keywords.id:keywords/zone-plates","updated_date":"2026-10-22T04:07:25","created_date":"2026-09-30T00:00:00"}