A spiral motion piezoelectric micromotor for autofocus and auto zoom in a medical endoscope

Xi Chen; Zhijiang Chen; Xiaotian Li; Liang Shan; Wanchen Sun; Xiguang Wang; Tianyu Xie; Shuxiang Dong

doi:10.1063/1.4941395

A spiral motion piezoelectric micromotor for autofocus and auto zoom in a medical endoscope

Xi Chen, Zhijiang Chen, Xiaotian Li, Liang Shan, Wanchen Sun, Xiguang Wang, Tianyu Xie, Shuxiang Dong

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

We report a hollow type piezoelectric micromotor made of a PZT ceramic/metal composite cylinder with sizes of only 3.6 mm in diameter and 3.0 mm in length aiming at medical endoscope application. The hollow piezoelectric stator of the micromotor, acting as a nut, can excite E₀₂-mode traveling wave along its circumferential direction, and a hollow rotor with a fine lens inside, acting as a screw, is driven to produce a spiral motion along its axis direction inside the hollow stator via the traveling wave. The features of the developed micromotors are its hollow, fine structure and submicrometer step resolution, ensuring that the optical path passes in a narrow and limited space and that the optical focal length is tuned precisely inside the endoscope, which is meaningful in medical diagnosis.

Original language	English (US)
Article number	052902
Journal	Applied Physics Letters
Volume	108
Issue number	5
DOIs	https://doi.org/10.1063/1.4941395
State	Published - Feb 1 2016

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4941395

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title = "A spiral motion piezoelectric micromotor for autofocus and auto zoom in a medical endoscope",

abstract = "We report a hollow type piezoelectric micromotor made of a PZT ceramic/metal composite cylinder with sizes of only 3.6 mm in diameter and 3.0 mm in length aiming at medical endoscope application. The hollow piezoelectric stator of the micromotor, acting as a nut, can excite E02-mode traveling wave along its circumferential direction, and a hollow rotor with a fine lens inside, acting as a screw, is driven to produce a spiral motion along its axis direction inside the hollow stator via the traveling wave. The features of the developed micromotors are its hollow, fine structure and submicrometer step resolution, ensuring that the optical path passes in a narrow and limited space and that the optical focal length is tuned precisely inside the endoscope, which is meaningful in medical diagnosis.",

author = "Xi Chen and Zhijiang Chen and Xiaotian Li and Liang Shan and Wanchen Sun and Xiguang Wang and Tianyu Xie and Shuxiang Dong",

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T1 - A spiral motion piezoelectric micromotor for autofocus and auto zoom in a medical endoscope

AU - Chen, Xi

AU - Chen, Zhijiang

AU - Li, Xiaotian

AU - Shan, Liang

AU - Sun, Wanchen

AU - Wang, Xiguang

AU - Xie, Tianyu

AU - Dong, Shuxiang

PY - 2016/2/1

Y1 - 2016/2/1

N2 - We report a hollow type piezoelectric micromotor made of a PZT ceramic/metal composite cylinder with sizes of only 3.6 mm in diameter and 3.0 mm in length aiming at medical endoscope application. The hollow piezoelectric stator of the micromotor, acting as a nut, can excite E02-mode traveling wave along its circumferential direction, and a hollow rotor with a fine lens inside, acting as a screw, is driven to produce a spiral motion along its axis direction inside the hollow stator via the traveling wave. The features of the developed micromotors are its hollow, fine structure and submicrometer step resolution, ensuring that the optical path passes in a narrow and limited space and that the optical focal length is tuned precisely inside the endoscope, which is meaningful in medical diagnosis.

AB - We report a hollow type piezoelectric micromotor made of a PZT ceramic/metal composite cylinder with sizes of only 3.6 mm in diameter and 3.0 mm in length aiming at medical endoscope application. The hollow piezoelectric stator of the micromotor, acting as a nut, can excite E02-mode traveling wave along its circumferential direction, and a hollow rotor with a fine lens inside, acting as a screw, is driven to produce a spiral motion along its axis direction inside the hollow stator via the traveling wave. The features of the developed micromotors are its hollow, fine structure and submicrometer step resolution, ensuring that the optical path passes in a narrow and limited space and that the optical focal length is tuned precisely inside the endoscope, which is meaningful in medical diagnosis.

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A spiral motion piezoelectric micromotor for autofocus and auto zoom in a medical endoscope

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