Speaker
Franziska Strasser
(Medical University Innsbruck)
Description
Optical tweezers are a powerful tool for measuring tiny forces on the microscale. However, when multiple traps are used, it is challenging to simultaneously measure the individual forces and torques.
We present a generally applicable holographic force measurement method to recover the individual forces based on a single farfield image. As this method does not require information about size, shape, or optical properties of the particle it is well suited to study biological specimen. We demonstrate measurements for up to ten traps, and disentangle the individual forces on a red blood cell stretched by four optical traps.
Primary author
Franziska Strasser
(Medical University Innsbruck)
Co-authors
Simon Moser
(Medical University Innsbruck)
Prof.
Gregor Thalhammer
(Medical University Innsbruck)
Prof.
Monika Ritsch-Marte
(Medical University Innsbruck)
