Plasmons, Hot Electrons, and Nanoscale Heat Transfer - Naomi Halas

Naomi Halas (Rice University) presents at the Fred Kavli Special Symposium on Physics Frontiers at the APS March Meeting 2016.

[@tsotnedadiani7407]

thank you very much !

[@juniormilles3303]

Symmetry break? Between a spherical object and tetragonal object?

[@tcl98387]

Yes? Tetragonal object?! Between spheres and nanospheres and nanoblocks and nanorods. Symmetry is very important in plasmonics. Noble metals are plasmon antennas: incident EM waves excite plasmonic resonances. If the structure is symmetric and smaller than lambda, dipolar EM modes dominate. If you break symmetry you allow for the excitation of other modes that may become dominant.

[@juniormilles3303]

@@tcl98387 How can the symmetry of a sphere or tetragonal break? Do they deform? Or do you mean the symmetry between a spherical object and another one?

[@tcl98387]

@@juniormilles3303 Unsure why you keep referencing tetragonal---this is a type of crystal system? A comparison of a sphere and 'tetragonal' doesn't make sense. Yes, a structural break in symmetry occurs when you deform a sphere by elongating it!

[@juniormilles3303]

@@tcl98387 tetragonal shapes are symmetrical. It is odd to think that they can break symmetry.

[@_Be_Still]

The sphere is radially symmetric. By stretching it to form a cylindrical shaped rod, symmetry is broken.

[@offmeds2nite]

:D

[@Muonium1]

holy FUCK the coughing. interesting talk though.