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Proceedings Article

Grasping microscopic objects by an optical trapping system controlled by five finger tips

[+] Author Affiliations
In-Yong Park, Sun-Uk Hwang, Je-Hoon Song, Yong-Gu Lee

Gwangju Institute of Science and Technology (South Korea)

Proc. SPIE 5930, Optical Trapping and Optical Micromanipulation II, 59301Z (August 26, 2005); doi:10.1117/12.616379
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From Conference Volume 5930

  • Optical Trapping and Optical Micromanipulation II
  • Kishan Dholakia; Gabriel C. Spalding
  • San Diego, California, USA | July 31, 2005

abstract

There are increased needs for manipulating microscopic objects. One of enabling technologies is an instrument called optical tweezers (OT) that uses a focused laser beam to trap and move microscopic objects. OT has been shown effective for directly manipulating spherical, cylindrical or axis-symmetrical shapes. For other forms of shapes that do not show any symmetry, there have been works on using micrometer sized balls as a handle to indirectly manipulate the objects. Direct manipulation is difficult because complex trapping potential needs to be calculated to stably trap non-symmetrical shapes. User interfaces for these "indirect" systems use a computer mouse to design a layout of balls for surrounding (holding) an object and a trajectory that describes how these balls as a whole moves. The contained object pushed by these surrounding balls then moves accordingly. In this study, we introduce an intuitive user interface system for manipulating these balls. Using virtual reality gloves, each finger tip position of an operator is used to position control these balls. This user interface system enables the operator to intuitively grasp, move and release irregular formed shapes.

© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

In-Yong Park ; Sun-Uk Hwang ; Je-Hoon Song and Yong-Gu Lee
"Grasping microscopic objects by an optical trapping system controlled by five finger tips", Proc. SPIE 5930, Optical Trapping and Optical Micromanipulation II, 59301Z (August 26, 2005); doi:10.1117/12.616379; http://dx.doi.org/10.1117/12.616379


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