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

In-Yong Park; Sun-Uk Hwang; Je-Hoon Song; Yong-Gu Lee

doi:10.1117/12.616379

26 August 2005 Grasping microscopic objects by an optical trapping system controlled by five finger tips

In-Yong Park, Sun-Uk Hwang, Je-Hoon Song, Yong-Gu Lee

Proceedings Volume 5930, Optical Trapping and Optical Micromanipulation II; 59301Z (2005) https://doi.org/10.1117/12.616379
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

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.

Citation Download 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 (26 August 2005); https://doi.org/10.1117/12.616379

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