Update invited.md

content/invited.md

@@ -13,6 +13,10 @@ To modify the speaker photo:
 1. [Volker Blum](https://mems.duke.edu/people/volker-blum/), Duke University (USA)
 2. [Vikram Gavini](https://me.engin.umich.edu/people/faculty/vikram-gavini/), University of Michigan (USA)
 3. [Robert Harrison](https://www.stonybrook.edu/faculty-directory/profile/robert-harrison), Stony Brook University (USA)
-4. [Dominika Zgid](https://lsa.umich.edu/chem/people/faculty/zgid.html), University of Michigan (USA)
+4. [Martina Nibbi](https://www.cs.cit.tum.de/en/sccs/people/martina-nibbi/), TU Muenich (Germany)
+5. [Laura Ratcliff](https://www.bristol.ac.uk/people/person/Laura-Ratcliff-59a769ec-2b0b-4d09-84b4-546f7f9c340e/), University of Bristol (England)
+6. [Michael Ruggenthaler](https://www.mpsd.mpg.de/person/42589/2736), MPI Hamburg (Germany)
+7. [Shunsuke Sato](https://trios.tsukuba.ac.jp/en/researcher/0000004299), University of Tsukuba (Japan) 
+8. [Dominika Zgid](https://lsa.umich.edu/chem/people/faculty/zgid.html), University of Michigan (USA)