A precise method for rotating single cells

Hiroaki Kobayashi, Ichirou Ishimaru, Ryoji Hyodo, Toshiki Yasokawa, Katsumi Ishizaki, Shigeki Kuriyama, Tsutomu Masaki, Seiji Nakai, Kaoru Takegawa, Naotaka Tanaka

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


A precise method to rotate single cells is reported. In this method, the light pressure in the optical axis direction is harnessed as a rotating torque. Two proximal points in each cell are illuminated from different directions using two beams, and a light pressure is created that acts as a rotating torque. Using this proposed method, we could control the rotational direction of a microsphere regardless of the refractive index distribution in a noncontact operation. The microsphere could be rotated using proximal two-beam optical tweezers, and the rotational velocity could be controlled by changing the light intensity.

Original languageEnglish
Article number131103
JournalApplied Physics Letters
Issue number13
Publication statusPublished - 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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