Optical Tweezers: Difference between revisions
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<li> | |||
<table> | |||
<thead>Stoke's Drag Force Measurements</thead> | |||
<th> | |||
Beam Power (mW) | |||
</th> | |||
<th> | |||
Escape Velocity (microns/second) | |||
</th> | |||
<th> | |||
Trap Force (pN) | |||
</th> | |||
<tr> | |||
<td> | |||
5.5 | |||
</td> | |||
<td> | |||
20.57 | |||
</td> | |||
<td> | |||
0.88 | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>8.5</td> | |||
<td>33.49</td> | |||
<td>1.44</td> | |||
</tr> | |||
<tr> | |||
<td>11.7</td> | |||
<td>40.00</td> | |||
<td>1.72</td> | |||
</tr> | |||
<tr> | |||
<td>15.3</td> | |||
<td>62.60</td> | |||
<td>2.69</td> | |||
</tr> | |||
<tr> | |||
<td>19.0</td> | |||
<td>84.71</td> | |||
<td>3.64</td> | |||
</tr> | |||
<tr> | |||
<td>23.0</td> | |||
<td>110.77</td> | |||
<td>4.76</td> | |||
</tr> | |||
</table> | |||
</li> | |||
<li> | <li> | ||
[] | [] | ||
</li> | </li> | ||
</ul> | </ul> | ||
Revision as of 02:01, 29 May 2014
Optical Tweezers
Resources
- [1] Directions on how to use a QPD in an optical tweezer setup.
- [2] Here are some slide prepping instructions from Berkeley.
Our own setup
- Here's how we did our Slide Set-Up.
Using NI Vision Assistant
- [3] Image Acquisition/Saving Images
- [4] How to track the microspheres in NI Vision Assistant using pattern matching.
Our calculations using Brownian Motion
-
2.56 micrometer spheres
- 4.6 mW Beam [5]
Calculating Trap Forces Using Stokes' Drag Force
-
<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 - []