Melting in two dimensions is characterized by the thermal excitation and proliferation of free topological defects, disclinations and dislocations which destroy the rigidity of the crystal. This freezing/melting process has been well established for flat systems, but on a sphere, topology requires that there must be a net 12 pentagons (1/2 disclinations) i.e., the 12 pentagons on a soccer ball, and energetically it is favorable to screen the pentagons with strings of dislocations (pentagon-heptagon pairs) known as “scars”. We find that freezing on sphere proceeds by the formation of a single, encompassing, crystalline “continent” that forces the defects into 12 isolated “seas” with icosahedral symmetry.
The Soft Matter Lunch & Posters event welcomes researchers working in all areas of soft matter at Georgia Tech to participate and share your latest and greatest discoveries. There will be two concurrent poster sessions on anything squishy. A free lunch will be provided. All participants may present a poster (size limit 30” x 40”). Come network with fellow graduate students, post doctoral fellows and faculty while showcasing your exciting research! Registration is free but required.
Registration Deadline: April 12, 2017, 5:00 PM