1. Optical Tweezers Charlie Mueller Jesse Fogleman

2. Qualitative Description

3. Qualitative Description 2

4. Ray Tracing Analysis of Force Trap Force vector exerted by light on dielectric particle as a result of momentum conservation Incoming light ray Dielectric particle being trapped Exiting light ray Scattering force vector

5. The force on charge particle in an electric field is given by the Lorentz Force Equation: Electric Dipole Approximation

6. Sources Used: A. Ashkin, J.M. Dziedzic, J.E. Bjorkholm and S. Chu. 1986. "Observation of a Single-Beam Gradient Force Optical Trap for Dielectric Particles." Opt. Lett. 11 (5) 288-290. Block S. M. 1992. "Making light work with optical tweezers." Nature 360(6403):493-5. Dholakia, Kishan, Gabriel Spaulding, and Michael Macdonald. "Optical Tweezers: the next Generation." Physics World Oct. 2002. Physicsweb.org. Oct. 2002. Web. 13 Nov. 2010. http://physicsworldarchive.iop.org/index.cfm?action=summary&doc=15%2F1 0%2Fphwv15i10a37%40pwa-xml&qt http://physicsworldarchive.iop.org/index.cfm?action=summary&doc=15%2F1 0%2Fphwv15i10a37%40pwa-xml&qt Pressurized Viruses, Gelbart, et al.Science 27 March 2009: 1682- 1683.DOI:10.1126/science.1170645 http://www.absoluteastronomy.com/topics/Optical_tweezers http://www.absoluteastronomy.com/topics/Optical_tweezers