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dc.contributor.author Castaneda, Francisco
dc.contributor.author Cavanaugh, Jeffrey
dc.contributor.author Jensen, Mikkel Herholdt
dc.contributor.author Morris, Eliza
dc.date.accessioned 2019-12-06T17:30:36Z
dc.date.available 2019-12-06T17:30:36Z
dc.date.issued 2019-12-06
dc.identifier.uri http://hdl.handle.net/10211.3/214384
dc.description.abstract We constructed an optical tweezer system capable of trapping and manipulating micron size dielectric microspheres. Optical traps are instruments that have been used to study the mechanical properties of biological components, such as molecular motors and biopolymer networks. A trapping laser is focused on a dielectric sphere, then following Newton’s third law, an equal and opposite momentum change is imparted. The force on sphere is proportional to the light intensity. Forces involved in this interaction are the Scattering and Gradient restoring forces, and in small displacements, they show Hookean spring characteristics. Starting from basic optical components, such as lenses and mirrors, we constructed a system capable of trapping and manipulating particles with nanometer precision. We also added imaging and force measurement capabilities to our system. This setup can be used in any application involving non-invasive precision manipulation. en_US
dc.description.sponsorship Physics and Astronomy
dc.description.sponsorship Biological Sciences
dc.language.iso en_US en_US
dc.subject Optical tweezer en_US
dc.subject Dielectric microspheres en_US
dc.subject Optical traps en_US
dc.title Optical traps: using lasers to study the physics behind biology en_US
dc.type Poster en_US


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