From Advanced Projects Lab
Optical Tweezers
Resources
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[1] Directions on how to use a QPD in an optical tweezer setup.
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[2] Here are some slide prepping instructions from Berkeley.
Our own setup
Using NI Vision Assistant
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[3] Image Acquisition/Saving Images
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[4] How to track the microspheres in NI Vision Assistant using pattern matching.
Our calculations using Brownian Motion
Calculating Trap Forces Using Stokes' Drag Force
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<thead>Stoke's Drag Force Measurements</thead>
Beam Power (mW)
|
Escape Velocity (microns/second)
|
Trap Force (pN)
|
---|
5.5
|
20.57
|
0.88
|
8.5 |
33.49 |
1.44 |
11.7 |
40.00 |
1.72 |
15.3 |
62.60 |
2.69 |
19.0 |
84.71 |
3.64 |
23.0 |
110.77 |
4.76 |
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