Physics Colloquium: Tuesday, April 16, 2019 -- Statistical Mechanics of 2D-Metamaterials

Event Date: 

Tuesday, April 16, 2019 - 3:45pm

Event Date Details: 

Refreshments served at 3:30 pm

Event Location: 

  • Broida 1640
  • Physics Department Colloquium

Graphene, along with other 2D metamaterials, provides an ideal system to test and explore the statistical mechanics of thermally fluctuating elastic membranes. Its high Young’s modulus means that thermal fluctuations are already important at nanometer length scales, dramatically modifying the mechanical properties of thermalized graphene sheets. I will discuss the dependence of these mechanical properties on the precise geometry (size) and topology (kirigami) of the graphene sheets as well as temperature. By understanding the behavior of modular elements, we should be able to design or supply metamaterials with a wide range of length-scale dependent mechanical moduli by building arrays of holes and slits into a single pure material. Geometrically-driven phase transitions also open quite new directions in the study and understanding of micro and nano electromechanical systems.

 

Mark Bowick, KITP