September 30, 2009

"Optical tweezers based manipulation of materials"

Samarendra K. Mohanty
University of Texas-Arlington


Optical tweezers has had a major impact not only on biophysics and medicine, but it is also proving a very useful tool for physics and material science. In addition to remote, non-contact application of force and torque in three-dimensions that can be continuously varied unlike mechanical manipulators, tweezers can sense the force of interaction between materials, thus unraveling their mechanical properties. To advance the degree of manipulation such as rotation of materials, along with spatial structuring of intensity, other beam parameters such as phase and polarization needs to be specially configured. I will discuss these advancements in optical tweezers technology and its applications in microfluidic actuation and sorting.


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