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Updated: Jun 16, 2026

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Tunable micro-optofluidic prism based on liquid-core liquid-cladding configuration.

Chaolong Song1, Nam-Trung Nguyen, Anand Krishna Asundi

  • 1School of Mechanical and Aerospace Engineering, Nanyang Technological University,50 Nanyang Avenue, Singapore 639798, Singapore.

Optics Letters
|February 4, 2010
PubMed
Summary
This summary is machine-generated.

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We developed a tunable micro-optofluidic prism for precise optical path alignment within microfluidic chips. This innovation simplifies complex optical systems by enabling continuous adjustment of light beam deviation angles.

Area of Science:

  • Microfluidics
  • Optics
  • Optical Engineering

Background:

  • Integrating optical components into microfluidic systems offers miniaturization and cost reduction benefits.
  • Accurate alignment of optical paths within microfluidic chips remains a significant challenge.

Purpose of the Study:

  • To propose and demonstrate a tunable micro-optofluidic prism for precise optical path management.
  • To enable continuous adjustment of light beam deviation angles within microfluidic devices.

Main Methods:

  • A liquid-core liquid-cladding structure was formed within a sector-shaped chamber.
  • Pressure barriers were employed to maintain a straight optical interface.
  • Tunability was achieved by adjusting the flow rate ratio between core and cladding streams.

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Last Updated: Jun 16, 2026

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Main Results:

  • The proposed micro-optofluidic prism demonstrated continuous tunability of its apex angle.
  • This tunability allowed for continuous adjustment of the light beam's deviation angle.
  • The optical interface was successfully maintained in a straight line.

Conclusions:

  • The tunable micro-optofluidic prism offers a novel solution for optical path alignment in microfluidic systems.
  • This technology can be applied to develop integrated optical switches and simplify complex optical setups.