Wide-Range Axial Position Measurement for Jumping Behavior of Optically Trapped Microsphere Near Surface Using Chromatic Confocal Sensor

Shin Ichi Ueda, Masaki Michihata, Terutake Hayashi, Yasuhiro Takaya

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

When a microsphere is trapped near a surface by single-beam gradient force trapping, the standing wave is generated between the microsphere and the surface, where abrupt motion along the optical axis (jumping) is observed corresponding to displacement of the surface. This jumping distance is on the order of a few hundred nanometers. In the vicinity of the surface, intensity of retro-reflected light is increased so that the averaged position of the jumping is shifted up on the order of several micrometers. Therefore wide-range and high-resolution position measurement technique is required. In this article, we proposed to apply a chromatic confocal sensor to measure the axial position of the microsphere in the standing wave. It was experimentally validated that the position of the microsphere could be measured with a resolution of 10 nm and a measuring range of 3 µm.

元の言語英語
ページ(範囲)131-140
ページ数10
ジャーナルInternational Journal of Optomechatronics
9
発行部数2
DOI
出版物ステータス出版済み - 4 3 2015

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Position measurement
Microspheres
sensors
Sensors
standing waves
micrometers
trapping
gradients
high resolution

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Mechanical Engineering
  • Electrical and Electronic Engineering

これを引用

Wide-Range Axial Position Measurement for Jumping Behavior of Optically Trapped Microsphere Near Surface Using Chromatic Confocal Sensor. / Ueda, Shin Ichi; Michihata, Masaki; Hayashi, Terutake; Takaya, Yasuhiro.

:: International Journal of Optomechatronics, 巻 9, 番号 2, 03.04.2015, p. 131-140.

研究成果: ジャーナルへの寄稿記事

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