publication . Preprint . Other literature type . Article . 2014

Real-Time Calibration of a Feedback Trap

Momčilo Gavrilov; Yonggun Jun; John Bechhoefer;
Open Access English
  • Published: 06 Jun 2014
Feedback traps use closed-loop control to trap or manipulate small particles and molecules in solution. They have been applied to the measurement of physical and chemical properties of particles and to explore fundamental questions in the non-equilibrium statistical mechanics of small systems. These applications have been hampered by drifts in the electric forces used to manipulate the particles. Although the drifts are small for measurements on the order of seconds, they dominate on time scales of minutes or slower. Here, we show that an extended recursive least-squares (RLS) parameter-estimation algorithm can allow real-time measurement and control of electric...
free text keywords: Physics - Instrumentation and Detectors
Related Organizations
Funded by
  • Funder: Natural Sciences and Engineering Research Council of Canada (NSERC)
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