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Crumpling and Wrinkling of Polymers and Membranes

Event Details

Event Dates: 

Tuesday, July 7, 2015 - 7:00pm

Seminar Location: 

  • Duane Physics Room G1B30

Speaker Name(s): 

David R. Nelson

Speaker Affiliation(s): 

Harvard University
Seminar Type/Subject

Scientific Seminar Type: 

  • Condensed Matter Seminar

Event Details & Abstract: 

Motivated by a revolution on polymer science, ranging from synthetic materials to biopolymers (DNA, RNA) and their membrane generalizations (red blood cell cytoskeleton), we will discuss how entropy leads to crumpling and wrinkling of these fascinating systems characterized by fractional dimensions. The physics of thermal wrinkling, as revealed by recent experiments on free-standing atomically thin graphene sheets, leads to a 6000-fold enhancement in their bending resistance at room temperature.