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Proceedings Paper

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

Paper Details

Date Published: 26 August 2005
PDF: 6 pages
Proc. SPIE 5930, Optical Trapping and Optical Micromanipulation II, 59301Z (26 August 2005); doi: 10.1117/12.616379
Show Author Affiliations
In-Yong Park, Gwangju Institute of Science and Technology (South Korea)
Sun-Uk Hwang, Gwangju Institute of Science and Technology (South Korea)
Je-Hoon Song, Gwangju Institute of Science and Technology (South Korea)
Yong-Gu Lee, Gwangju Institute of Science and Technology (South Korea)

Published in SPIE Proceedings Vol. 5930:
Optical Trapping and Optical Micromanipulation II
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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