Version 2.0 of the CODATA Uniform Description System for Nanomaterials (UDS) is now available for review at www.codata.org/nanomaterials. This new version incorporates suggestions, comments, and improvements gathered from several workshops as well as written comments submitted by a number of individual and groups.

We again welcome additional suggestions, comments, and improvements, which should be sent to nanomaterials@codata.org. The UDS (version 2.0) is available for use at no charge. We ask that you acknowledge use of the document as shown on the inside back cover.