An Introduction of Optical Trapping and the Construction of a Dual Beam Optical Tweezers
Abstract
Optical tweezers give us an unprecedented ability to manipulate objects on the
microscopic scale. This ability allows us to study and quantify the mechanics of
microscopic objects such as blood cells, DNA, proteins, bacteria, viruses, and sperm.
Many ingenious experiments have been performed over the past few years taking
advantage of this tool. However, this innovation is still relatively new and many of its
future applications are just being discovered. In this paper I describe the basic theory of
optical trapping along with the construction, alignment, motorization, and calibration of a
dual beam optical tweezers.
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