If you publish an original work in the Research Collection, the copyright and right of use for the work published remains with the author. This means that no legal obstacles stand in the way of a future publication of your research results elsewhere (such as with a commercial publisher).
If you would like to re-publish ("self-archive") a journal article or another paper via the "Green Road" of open access in the Research Collection, you need to the observe the copyright policies of the original publisher.
More information on self-archiving.
During the Research Collection's submission process, you have also the option to grant a Creative Commons license and determine to which extent your work may be re-used by third parties.
Furthermore, when uploading your work you will be prompted to grant the ETH Library permission to use your work under the Terms for submitting and using a work.