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Tag Archives: feedback

Force-clamp feedback for optical tweezers

A ~16 um long DNA-molecule is tethered between optically trapped plastic beads. Beads are held by a stationary trap (lower blue cross-hairs) and a steerable trap (upper green cross-hairs). The graphs on the right show the measured force (red) and the force set-point (blue) (top), the distance between the traps (middle), and the force-extension curve [...]

One More Feedback Paper

FPGA-based real-time position-clamp control in optical tweezers, The Sequel: doi:10.1063/1.3257693 (first part here)