Wed. Nov. 9th

1
Opto-mechanical micromachines the angular
momentum of light
Heidrun Schmitzer Physics Department Xavier
University
Abstract At the beginning of the last century
John Poynting realized that light has a spin
angular momentum which is associated with
circular polarization. And approximately 10 years
ago it was proposed that light can also carry an
orbital angular momentum independent of its
polarization state. Since then (angular) momentum
transfer from light to particles is investigated
as a means to drive the rotation of small micro
meter sized objects. I will present our own
studies on this interesting subject and discuss
some possible applications in physics and biology
.

• Wed. Nov. 9th