Physics Department presents Effects of confinement and degeneracy on optomechanical interaction between whispering-gallery-modes and a nanoparticle: old results and new ideas

Optical force on a polarizable dipole is usually divided into a conservative force, described as a gradient of the effective potential energy proportional to the intensity of electromagnetic field, and a non-conservative scattering or radiative pressure force. In this talk i will show that combination of the confinement of light in highly symmetrical optical cavity

Physics Department presents Indirect Excitons

Presented by Leonid V. Butov, University of California at San Diego A spatially indirect exciton (IX), also known as an interlayer exciton, is a bound pair of an electron and a hole confined in separated layers. Due to their long lifetimes, IXs can cool below the temperature of quantum degeneracy and can travel long distances.

Physics Department presents Dissipation, drag, and diffusion in 1D solids

Presented by Aleksandr Rodin, Yale-NUS College Solid-state batteries have the potential to play an integral part in applications where traditional liquid-electrolyte cells are not ideal. A vital component of these batteries is a solid electrolyte: an electronic insulator capable of carrying ions between the anode and the cathode. Finding an optimal material for this component