Supplementary material and data in journal articles
IOP Publishing encourages authors to submit supplementary material and/or research data at submission. If the article is accepted for publication, each file will receive a unique digital object identifier (DOI) so that it is citable and discoverable in addition to the article itself.
- Supplementary material typically includes relevant material that does not form part of the main article, such as large tables, additional figures or appendices. It may also include multimedia files, i.e. video clips, animations or sound files. Please note that multimedia files must not include any music.
- Research data could include datasets, code or software files that enable the verification or reproduction of the research findings reported in the article, up to the maximum file size limit noted below.
If material is integral to the article then it must be submitted as part of the article rather than as supplementary material.
We ask authors to provide a title and description for each supplementary file. The title and description should be included within the file itself and are necessary for DOI registration. Titles must not exceed 30 characters, and descriptions must not exceed 30 words.
| Title | Description |
| Video 1 | Movie of Eng-NT-HUVEC production using low-cost automated gel aspoiration ejection at UCL, London |
| Supplementary Figures | Additional data on the characterisation of the endothelial cell network formation within EngNT-HUVEC |
| Supplementary dataset 1 | Dataset including data on the characterisation of the endothelial cell network formation within EngNT-HUVEC |
The description must include a brief summary of the file contents. For multimedia files the description must describe the key points that are demonstrated by the video/audio.
Supplementary material / data is not included in the PDF of the article and does not form part of the Version of Record. As they are not considered integral to the article, files will not be included in peer review by default, but they will be available for peer reviewers to check if they wish. Supplementary material / data is hosted for free with an article on IOPscience, in the format supplied by the author, and is accessible to the whole readership. Supplementary material / data is not formatted or edited by our production team, and so proofs are not provided to authors.
Files for supplementary material / data can be up to a maximum of 50 MB each, as long as the combined file size for all files including the main article is no more than 150 MB. Authors wishing to associate larger amounts of data with their article are recommended to make use of a data repository.
Authors should ensure the necessary permissions are obtained before including any third party supplementary material with their submission.