McAdams, Daniel Robert
(2009)
Measuring Inter-Particle Forces at an Interface with Optical Tweezers and a Long Working-Distance Objective Lens.
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
An optical tweezer set up is used to measure the forces between polystyrene microspheres on the interface between mineral oil and water. The trap is controlled through Matlab Simulink and dSpaceControlDesk. The forces were found to follow a combination of Coulomb's law and dipole-dipole interaction, but for much less charge than is specified by the manufacturer to be on the surface of the microspheres. There is also a value given for the effective viscosity of the interface. A discussion on the design andmotivation for using a Bessel beam trap can be found in the appendix.
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Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
| Creators | Email | Pitt Username | ORCID  |
|---|
| McAdams, Daniel Robert | drm33@pitt.edu | DRM33 | |
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| ETD Committee: |
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| Date: |
29 June 2009 |
| Date Type: |
Completion |
| Defense Date: |
9 December 2008 |
| Approval Date: |
29 June 2009 |
| Submission Date: |
4 February 2009 |
| Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Swanson School of Engineering > Mechanical Engineering |
| Degree: |
MSME - Master of Science in Mechanical Engineering |
| Thesis Type: |
Master's Thesis |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
colloid; interface; opitcal trapping; optical tweezers |
| Other ID: |
http://etd.library.pitt.edu/ETD/available/etd-02042009-110009/, etd-02042009-110009 |
| Date Deposited: |
10 Nov 2011 19:31 |
| Last Modified: |
15 Nov 2016 13:36 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/6329 |
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