Lab 1 Report -- Nathan S Lachenmyer
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Revision as of 02:12, 2 March 2012 by Nathan S Lachenmyer (Talk | contribs)
Contents
Calibration
All calibrations and experiments done at 20 mW.
Position Calibration
calibration: 502463 Volts / m = 1.99 um / volt
Trap Stiffness Calibration
| Method | Trap Stiffness (pN / nm) |
|---|---|
| Stokes | 2.26e-5 pN/nm |
| Equipartition Theorem | 1.23e-5 pN/nm |
| PSD | *Need Bandwidth of DAQ* |
Experiments
E Coli
The frequencies here are not properly calibrated until I get the DAQ bandwidth. There are obvious peaks at what are (now) 10, 20, and 40 Hz -- I think these are the harmonics of the e coli rotation, and once the abscissa is properly scaled will give the e coli rotation speed.
DNA Tethers
