I am assistant professor of Mechanical and Aerospace Engineering and a member of the Princeton Institute for the Science and Technology of Materials at Princeton University.

My research interests are in Mechanics, Soft Matter and Biological Physics:

  • Statistical mechanics of thin structures
  • Elastic metamaterials
  • Mechanics during embryo development
  • Physics of adaptive immune system
  • Protein aggregation (model of aging in bacteria, origin for many diseases)
  • Self assembly of colloids

See the Research section for more details.

Short Biography:

From 2011 to 2015 I was postdoc with David R. Nelson at Harvard University. In 2011 I received a Ph.D. in Physics at MIT, where I was co-advised by Arup K. Chakraborty and Mehran Kardar. Before coming to MIT I obtained a B. Sc. (2006) in Mathematical Physics from the University of Ljubljana, Slovenia, under the supervision of Primož Ziherl.

Click here for my CV.


[December 2017] Andrej Košmrlj received the NSF CAREER Award
[December 2017] Team of Princeton MAE undergraduates (co-advised by Andrej Košmrlj) has advanced to the finals of the NASA Big Idea Challenge competition. Check out their HORUS project on youtube.
[September 2017] Sijie Tong wins the Summerfield Second Year Fellowship.
SijieTong_ SummerfieldFellowship
[June 2017] Cecilia Stoner wins the Outstanding Leadership Award in Materials and the second prize Donald J. Dike Award for Excellence in Undergraduate Research


[May 2017] Andrej Košmrlj and Howard A. Stone have co-organized the 7th Northeast Complex Fluids and Soft Matter WorkshopNCS7