{"term":{"id":"13803","title":"colloidal crystal","longtitle":"IUPAC Gold Book - colloidal crystal","doi":"10.1351\/goldbook.13803","code":"13803","status":"current","definitions":[{"id":1,"text":"Two- or three-dimensional ordered array of molecules or nanoparticles having a dimension roughly between \\(\\pu{1 nm}\\) and \\(\\pu{1 \\upmu m}\\) in at least one direction.","exams":{"1":"Colloidal crystals are photonic crystals such as opal."},"sources":["PAC, 2012, 85, 463. 'Terminology for aggregation and self-assembly in polymer science (IUPAC Recommendations 2013)' on page 467 (https:\/\/doi.org\/10.1351\/PAC-REC-12-03-12)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/13803\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/13803\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/13803\/plain"},"citation":"Citation: 'colloidal crystal' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351\/goldbook.13803","license":"The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/) for individual terms.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2026-08-10T11:25:05+00:00"}}