Dear colleagues, we would like to bring your attention to an upcoming session entitled "*Disordered materials: spectroscopic and scattering techniques* <https://www.xray.cz/ctfc/chairs-speakers.asp?id=59>" at the next IUCr Congress, 14-22 August 2021. This is a joint session of the XAFS and scattering commissions of the IUCr and seeks to bring together work that uses either, or both, these approaches to understand disordered materials. Abstract submission is currently open for contributed talks and the *deadline is April 15th*.
Currently the meeting is planned to be hybrid with some delegates attending in Prague, Czech Republic, in person and others attending remotely. The cost for remote attendance is much lower. Because of the uncertainties you are encouraged to submit abstracts and decide how you will attend later. Please see the website, https://iucr25.org/, for more information (and to submit your abstracts). Synopsis: Three important classes of disordered materials are liquids, glasses and nanomaterials. Liquids have no long range order, but display local correlations and order between molecules. Similarly glasses are not crystalline materials, i.e. they are solids without long range order, but still with local order between atoms. Nanomaterials have short range order on the nanoscale. The short range sensitivity of XAS makes it ideal to study such materials and in total scattering analysis the weak diffuse features are related to the short and medium range order. This session aims at highlighting strengths and limitations as well as the complementarity of spectroscopic and scattering techniques to understand the structural correlations on the atomic and molecular scale underpinning the macroscopic properties of disordered and nanostructured materials. We hope you will join us for what we hope is an exciting session. Please forward this announcement to others who may be interested! Best regards, Angela Trapananti Simon Billinge
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