Physics Colloquium: Dr. David Grier, Tractor Beams and Related Topological Waves

Wed, Mar 15, 2023 - 04:00 PM — Wed, Mar 15, 2023 - 05:00 PM
Admission Fee
Event Address
Marshak Science Building, Room 418N, and by Zoom
Event Location
For more information, including Zoom details, please contact Prof. Sriram Ganeshan,
Event Details

Dr. David Grier
Department of Physics
Director of the Center for Soft Matter Research
New York University, New York, NY

Tractor Beams and Related Topological Waves



Introducing topological defects into the wavefronts of traveling waves endows them with surprising and useful properties including quantized angular momentum, freedom from diffraction, and apparent force-free acceleration. Guided by the theory of photokinetic effects, we use wavefront topology to transform optical traps into practical tractor beams, thereby transforming science fiction tropes into functional tools for research and exploration. Applying analogous principles to acoustic forces reveals a new frontier for wave-matter composite systems, including new classes of experimentally observable dynamic states.

Back to Departmental Calendar Back to calendar of events